Entries |
Document | Title | Date |
20080204560 | METHOD FOR COMPENSATING HARDWARE MISALIGNMENTS IN A CAMERA - A method for compensating hardware misalignments in a camera is presented. The camera includes a maneuverable part and a fixed part, and the maneuverable part is controlled by a steering motor system. In a first step of the method mechanical coordinates from the steering motor system is received, wherein the mechanical coordinates correspond to a pan and tilt position, the pan and tilt position having a complementary pan and tilt position. Next, pre-determined calibration data corresponding to the received mechanical coordinates is read from a memory wherein the pre-determined calibration data describes a relationship between a pan and tilt position and a complementry pan and tilt position, and then compensated coordinates are determined based upon the received mechanical coordinates and the pre-determined calibration data. | 08-28-2008 |
20080218592 | Method and System for Calibrating a Camera in Production Machines - Method and system for calibrating a camera ( | 09-11-2008 |
20080231710 | METHOD AND APPARATUS FOR CAMERA CALIBRATION, AND VEHICLE - A camera calibration apparatus has a parameter deriver adapted to find parameters for projecting images shot with N cameras (where N is an integer of 3 or more) onto a predetermined surface and merging the images together. The N cameras comprise a first camera, a second camera, . . . and an N-th camera. The i-th camera (where i is every integer between 1 and N, inclusive) shares a common shooting area with at least one of the other (N−1) cameras, so that there are a plurality of such common shooting areas in total. The parameter deriver finds the parameters based on the results of the shooting of the calibration patterns arranged in the common shooting areas with the corresponding cameras. The calibration patterns are arranged separate from one another. | 09-25-2008 |
20080266400 | Testing system and testing method - A testing system including an image sensor, a transformer, and a display device is disclosed. The image sensor generates an image signal according to a light source. The transformer transforms the image signal into a processing signal. The display device displays a frame according to the processing signal. | 10-30-2008 |
20080291282 | Camera Calibration - Online camera calibration methods have been proposed whereby calibration information is extracted from the images that the system captures during normal operation and is used to continually update system parameters. However, such existing methods do not cope well with structure-poor scenes having little texture and/or 3D structure such as in a home or office environment. By considering camera families (a set of cameras that are manufactured at least partially in a common manner) it is possible to provide calibration methods which are suitable for use with structure-poor scenes. A prior distribution of camera parameters for a family of cameras is estimated and used to obtain accurate calibration results for individual cameras of the camera family even where the calibration is carried out online, in an environment which is structure-poor. | 11-27-2008 |
20080303905 | Methods and apparatuses for non-optical pixel self test - Methods and apparatuses for non-optical testing of imaging devices having an array of pixels are provided. One or more pixels are tested by setting the photoconversion device and/or a floating diffusion region to a known voltage level that is different from that used to operate the pixel during non-test operation. The pixel is then sampled and compared to an expected value. | 12-11-2008 |
20080303906 | CAMERA CALIBRATING APPARATUS AND METHOD - A camera calibrating apparatus uses a calibration target in combination with a laser source generating a laser beam defining a calibration plane and intersecting the camera field of view to define an object imaging area. The calibration target includes a frame defining a coplanar arrangement of more than five reference points having known position coordinates within an object reference system. The frame is disposed in a camera calibration position wherein the coplanar arrangement of reference points is substantially parallel to the calibration plane. The target includes an arrangement of light reflecting members protruding from the arrangement of reference points in a direction substantially perpendicular thereto so as to extend within the object imaging area, to allow the camera to capture an image formed by illuminated portions of the light reflecting members. The apparatus further includes image processor means programmed on the basis a calibrated camera model to associate any position coordinates in the object reference system with corresponding position coordinates in an image reference system. | 12-11-2008 |
20080309767 | Sequential regression for calibration from residues - A system for and method of calibrating an imaging device efficiently is described herein. The imaging device acquires an image of an object that is more than one color. The information acquired is then transferred to a computing device. The information is then used to generate a set of data which represents information which was not acquired in the image. The set of data is generated based on statistical prediction using a training data set. Using acquired image information and the set of data, an imaging device is able to be calibrated. Since the process of calibration utilizing this method only requires one image to be acquired and a reduced set of image information to be sent to the computing device, the process is more efficient than previous implementations. | 12-18-2008 |
20090002495 | Method for Monitoring Set Parameters of a Motion-Picture Camera - A method for monitoring set parameters of a motion-picture camera is provided. Film images, which are extracted from a recording beam path of the motion-picture camera and which are converted into digital assist signals by an optoelectronic transducer are arranged in an assist beam path of the motion-picture camera. Digital assist signals are output to a processing unit with an image frequency matching the image recording frequency of the motion-picture camera or with an assist image frequency, to which processing unit recording, control and/or status signals of the motion-picture camera or of devices connected to the motion-picture camera are additionally fed as metadata. The processing unit analyzes digital assist images composed of the digital assist signals and outputs digital output data and control signals to control modules of the motion-picture camera and/or to a network, and/or as analog or digital video signals to a monitor connected to the processing unit. | 01-01-2009 |
20090027504 | System and method for calibrating a camera - A method of calibrating a camera includes capturing a set of dark images at each of a plurality of different exposure settings, thereby generating a plurality of sets of dark images. Each set of dark images is averaged, thereby generating a fixed pattern noise image corresponding to each one of the exposure settings. The method includes determining fixed pattern noise for at least one pixel of the camera based on an exposure setting of the camera and at least one of the fixed pattern noise images. | 01-29-2009 |
20090033747 | Method and System for Monitoring Quality of Live Video Feed From Multiple Cameras - A method and system for monitoring the quality of video cameras automatically performs one or more tests on a current image received from each of the cameras. The cameras are connected to a network, such as the Internet, and are generally of different types and are owned and/or operated by various entities. A current image from each of the cameras is evaluated using image processing techniques so that a human need not have to view the camera imagery when an initial evaluation is made. Evaluation parameters may include such things as whether a camera is outputting a predefined error image, an image whose brightness is bad, or an image with bad hues. The status of each camera on a network is stored along with a snapshot of the image from which an evaluation was made and a time stamp. The data are made available to the operator of the camera for maintenance and other purposes. | 02-05-2009 |
20090040312 | CALIBRATION APPARATUS AND METHOD THEREOF - A device includes a monitor arranged in a field of view of a camera whose three-dimensional position in the three-dimensional reference coordination system is fixed, and a calculating unit provided in the monitor and configured to display a camera image shot by a camera on a screen of the monitor in a recursive structure by shooting a basic square whose three-dimensional position in the three-dimensional reference coordination system is fixed and a monitor screen including the basic square by the camera and obtain a posture matrix of the camera on the basis of the three-dimensional position of the basic square, the two-dimensional image positions of the basic square in the camera image displayed on the monitor in the recursive structure and the focal distance of the camera. | 02-12-2009 |
20090051772 | ESTABLISHING AND MAINTAINING FOCUS IN SEGMENTED-OPTIC TELESCOPES - A multi-aperture interferometric optical system collects light propagating from a source of light and develops overlapping diffraction patterns on an optical detector that produces output signals for processing to automatically focus the optical system and form an image corresponding to the diffraction patterns. A preferred embodiment of the invention is a large aperture orbiting, earth-watching ring interferometric optical system configured such that there is no macro-structure pointing. Four mirror-ring structures direct incoming light to a multi-spectral primary optical detector that acquires light-pattern information to focus the optical system and derive an image. | 02-26-2009 |
20090059011 | CALIBRATION METHOD FOR STRUCTURE PARAMETERS OF STRUCTURED-LIGHT VISION SENSOR - This disclosure provides a calibration method for structure parameters of a structured-light vision sensor, which includes setting up the coordinate frames of a camera, image plane and target for calibration. The calculation of coordinates in the camera coordinate frame of stripes, projected by structured-light, on the planar target and a structured-light equation fitting according to the coordinates in the camera coordinate frame of the stripes on the planar target, by moving the planar target arbitrarily multiple times. The calibration method of the structured-light vision sensor provided by the disclosure is easy to operate and no auxiliary apparatus is needed, which can not only promote the efficiency of the calibration of structured-light, but also extend the application scope of calibration of structured-light. | 03-05-2009 |
20090059012 | Programmable digital black level calibration with feedback control - A programmable digital black level calibration circuit comprises a combining circuit, a digital programmable gain amplifier (PGA), and a black level feedback circuit. The combining circuit combines a digital image signal for optical black (OB) pixels and a feedback signal and outputs a digital PGA input signal. The PGA amplifies the digital PGA input signal by a PGA gain value and outputs a digital PGA output signal. The black level feedback circuit receives the digital PGA output signal and a target black level and in response outputs the feedback signal such that a black level of the OB pixels is calibrated with respect to the target black level. The programmable digital black level calibration circuit calibrates the black level in pure digital domain using signed data buses. The target black level is adjustable to a desired positive or negative value independent from the PGA gain value. | 03-05-2009 |
20090066796 | Methods and Apparatus for Correcting Banding of Imaged Regular Patterns - A multi-channel imaging head is calibrated in accordance with a pre-determined regular pattern to minimize swath-to-swath and inter-swath variations during the imaging of the regular pattern. The imaging parameters of the imaging head are optimized in accordance with the pre-determined regular pattern. | 03-12-2009 |
20090096873 | Method and System for Processing an Image for Testing a Cdd/Cmos Sensor - According to a first aspect, the invention concerns an image sensor test system ( | 04-16-2009 |
20090141131 | Calibrating method of image measuring instrument - An image measuring instrument includes: a CCD camera having an objective lens; an orientation changer that changes an imaging direction; a movement mechanism that relatively moves the CCD camera and a workpiece for auto-focusing the objective lens; and a position detector for detecting a position of the CCD camera. A calibration method includes: a preparation step for preparing a reference gauge having a sphere of which radius is sized not more than a focus depth of the objective lens, a surface of the sphere defining a reference surface; an orientation-changing step for changing the imaging direction; a focus-adjusting step for focusing the objective lens on the reference surface using the auto-focusing of the movement mechanism; and a position-detecting step for detecting the position information of the imaging unit by the position detector, thereby calibrating the position of the CCD camera. | 06-04-2009 |
20090147086 | IMAGE-TAKING APPARATUS AND PROCESSING PROGRAM FOR THE IMAGE-TAKING APPARATUS - An image-taking apparatus, which can automatically adjust parameters relating to image-taking regardless of variations in manufacturing errors and adjustment errors, is disclosed. The image-taking apparatus takes images by using an image pickup element. The image-taking apparatus successively shifts a parameter relating to image-taking so as to include a reference value, and takes a plurality of images with the parameters different from each other. Furthermore, the image-taking apparatus stores information on the parameter corresponding to an image selected by a user among the plurality of images in a memory, and determines the parameter to be used for image-taking on the basis of information stored in the memory. | 06-11-2009 |
20090153669 | METHOD AND SYSTEM FOR CALIBRATING CAMERA WITH RECTIFICATION HOMOGRAPHY OF IMAGED PARALLELOGRAM - A method for calibrating a camera including (a) obtaining a two-dimensional (2D) homography that maps each of parallelograms projected onto images taken by two arbitrary cameras into a rectangle, wherein the 2D homography is defined as a rectification homography and wherein new cameras that have virtual images are defined as rectified cameras and a new infinite homography is generated between the two rectified cameras, the virtual images being transformed from original images by the rectification homography; (b) obtaining an original infinite homography by using the correlations among the new infinite homography, the rectification homography and the original infinite homography; and (c) obtaining intrinsic camera parameters based on the correlation between the original infinite homography and the intrinsic camera parameters, thereby calibrating the camera. | 06-18-2009 |
20090160944 | Camera flash module and method for controlling same - An auto-exposure algorithm for controlling a camera flash uses image processing to identify important areas of the image affected by the flash, while disregarding highly reflective/illuminated areas and uses a ND filter to linearize the flash triggering with highly reflective scenes. The camera flash is controlled by the auto-exposure algorithm in two stages: | 06-25-2009 |
20090167868 | Camera handling system - A test handler is controlled by a tester to transport, select, focus and test miniature digital camera modules. The modules are loaded onto a transport tray and moved on a conveyer to a robot. The robot selects the untested modules from the tray an alternately places the modules into two test stations. A first test station focuses and tests a first module while the second test station is loaded with a second module, thus burying the handling time for the modules within the test time. The robot returns tested modules to the transport tray, and when all modules on the tray are tested, moves the tray out of the test handler. A second tray with untested modules is positioned at the robot while the tested modules of the first tray are being focus fixed and sorted into part number bins. The overlap of operations buries handling time within the focus and test time so that the limitation of total test time is depending on focus and test operations. | 07-02-2009 |
20090167869 | Camera handling system - A test handler is controlled by a tester to transport, select, focus and test miniature digital camera modules. The modules are loaded onto a transport tray and moved on a conveyer to a robot. The robot selects the untested modules from the tray an alternately places the modules into two test stations. A first test station focuses and tests a first module while the second test station is loaded with a second module, thus burying the handling time for the modules within the test time. The robot returns tested modules to the transport tray, and when all modules on the tray are tested, moves the tray out of the test handler. A second tray with untested modules is positioned at the robot while the tested modules of the first tray are being focus fixed and sorted into part number bins. The overlap of operations buries handling time within the focus and test time so that the limitation of total test time is depending on focus and test operations. | 07-02-2009 |
20090185038 | Caliberation element for calibrating the magnification ratio of a camera, and a calibration method - A calibration element ( | 07-23-2009 |
20090201374 | WHITE BALANCE CALIBRATION FOR DIGITAL CAMERA DEVICE - This disclosure describes automatic self-calibration techniques for digital camera devices. In one aspect, a method for performing a calibration procedure in a digital camera device comprises initiating the calibration procedure when a camera sensor of the digital camera device is operating, accumulating data for the calibration procedure, the data comprising one or more averages of correlated color temperature (CCT) associated with information captured by the camera sensor, calculating one or more CCT vectors based on the one or more averages of CCT, and generating gray point correction factors based on the one or more CCT vectors. | 08-13-2009 |
20090201375 | Fail safe test for motion sensors - A microprocessor applies an analog test signal to an auxiliary signal input port of a motion sensor module. The motion sensor module processes the test signal and returns the signal in digital format to the microprocessor. The microprocessor compares the returned digital test signal to the original analog test signal to determine whether circuitry within the motion sensor module is operating properly. | 08-13-2009 |
20090201376 | Apparatus for Calibrating an Optical Camera and/or an Infrared Camera - An apparatus is provided for calibrating an optical camera and/or an infrared camera, in particular an infrared tele-camera, that is/are arranged in a motor vehicle and that has a checkered appearance with first and second fields. In order to make the known apparatus suitable for a plurality of camera systems, it is suggested that the first fields are heated or cooled. | 08-13-2009 |
20090207253 | AUTOMATIC PHASE ADJUSTING APPARATUS - A digital imaging signal obtained by converting an image data obtained by an imaging element into a digital value for each pixel is inputted to an automatic phase adjusting apparatus, and the automatic phase adjusting apparatus adjusts phases of pulses to be used for imaging based on the inputted digital imaging signal. The automatic phase adjusting apparatus is provided with a brightness level detector for calculating a brightness level of the digital imaging signal for a plurality of pixels in a first pixel region, a variability calculator for calculating a variability value which indicates signal variability of the digital imaging signal for each pixel for a plurality of pixels in a second pixel region, and a timing adjuster for adjusting the phases of the pulses in accordance with calculation results obtained by the brightness level detector and the variability calculator. | 08-20-2009 |
20090213224 | Fast Imaging System Calibration - Systems and methods are disclosed for calibrating an imaging system comprising a processing unit communicatively coupled to one or more imaging devices. The imaging system may also include a display. In an embodiment, a sequence of display features are displayed on a display, and imaged by the imaging device or devices. Spatial data is compiled related to the display features and the corresponding image features. In an embodiment, the display, imaging device or device, or both may be repositioned and another sequence of display features may be presented and the spatial data compiled. Using optimization and calibration techniques, the compiled spatial data may be used to obtain one or more internal imaging device parameters, one or more external parameters, or both. | 08-27-2009 |
20090219396 | CALIBRATION APPARATUS AND METHOD FOR IMAGING DEVICES AND COMPUTER PROGRAM - The present invention relates to calibration of camera parameters for converting a world coordinate system, which indicates a position in the real space, to a coordinate used in an image and vice versa. The apparatus according to the invention has a detection unit, which determines corresponding pixel pairs from the captured image and the model image and outputs corresponding data indicating determined pixel pairs, and a selection unit, which selects pixel pairs to be left in the corresponding data and removes data related to an unselected pixel pair from the corresponding data for generating selected corresponding data. The apparatus further has a calculation unit, which calculates camera parameters based on the selected corresponding data. | 09-03-2009 |
20090244291 | DYNAMIC OBJECT CLASSIFICATION - A camera system comprises an image capturing device and an object classification module connected to the image capturing device. The image capturing device has a field of view and produces image data representing an image of the field of view. The object classification module is operable to determine whether or not an object in an image is a member of an object class. The object classification module includes N decision steps configured in a cascade configuration, wherein at least one of the N decision steps is operable to (a) accept an object as a member of the object class, (b) reject an object as a member of the object class, and (c) call on a next step to determine whether or not an object is a member of the object class. | 10-01-2009 |
20090268035 | Multiple frame grabber - A system is presented that applies M×N×K computational units to calculating image parameters on N picture images captured simultaneously by N digital camera devices, where there are N groups of frame grabber units, each containing M frame grabbers in which there are K computational units. The data operated on by a computational unit is separate and independent from the image data operated on by the other computational units. This results in a performance speedup of M×N×K compared to one computational unit making the same computations. A master frame grabber unit controls the illumination of the N digital camera devices, and synchronizes the illumination with the clocks of the N digital camera devices. | 10-29-2009 |
20090273679 | APPARATUS AND METHOD FOR CALIBRATING IMAGE CAPTURE DEVICES - An apparatus and method are disclosed for calibrating image capture devices, such as the type used in electronic devices. In some embodiments, the electronic device may include at least one array of pixels and a memory coupled to the at least one array of pixels. The electronic device may further include a central processing unit (CPU) coupled to the memory and at least one color filter optically coupled to the at least one array of pixels. The memory may further include one or more storage locations that include a response of the at least one color filter to one or more predetermined wavelengths from a target test source, as well as, one or more storage locations that include a response of one or more baseline color filters. | 11-05-2009 |
20090273680 | AUTOMATIC FOCUS SYSTEM CALIBRATION FOR IMAGE CAPTURE SYSTEMS - Imaging systems and methods for calibrating imaging systems are provided. The imaging system has a body, a scene image capture system that captures images using a taking lens system that can be set to a plurality of different focus distances, and a rangefinder that is capable of determining a distance between the imaging system and at least one portion of a field of view of the talking lens system. The method comprises: automatically capturing a first calibration image of a first field of view through the taking lens system with the taking lens system set to a first focus distance setting; identifying a portion of the first calibration image having a predetermined degree of focus; using the rangefinder to determine a first calibration distance from the imaging device to the identified portion. A focus correlation is determined based upon the first calibration distance and the first focus distance setting. | 11-05-2009 |
20090303330 | RADIOMETRIC CALIBRATION USING TEMPORAL IRRADIANCE MIXTURES - A method of calibrating a brightness value measured by a camera with an amount of light received by the camera includes creating a series of measurements, wherein for each measurement the amount of light received at an image plane in the camera is controlled to be a known ratio of two opposed irradiance values: a high irradiance value and a low irradiance value. Each ratio is correlated with the brightness value measured by the camera. A function is obtained describing the correlation. | 12-10-2009 |
20090316002 | Image-capturing system diagnostic device, image-capturing system diagnostic program product and image-capturing device for monitoring foreign matter - An image-capturing system diagnostic device includes: an image acquisition unit that obtains an image; and a monitoring unit that monitors a quantity of foreign matter present in an optical path by generating defect information indicating a defect at pixels caused by the foreign matter in the optical path based upon the image obtained by the image acquisition unit and calculating an areal ratio of defective pixels in the image based upon the defect information having been generated and issues a warning for a photographer if the areal ratio of the defective pixels exceeds a predetermined value. | 12-24-2009 |
20090316003 | PINNED-CONTACT OSCILLATING LIQUID LENS AND IMAGING SYSTEM - An oscillating liquid lens and imaging system and method employing the lens are provided. The liquid lens includes a substrate with a channel opening extending therethrough between a first and second surface. A liquid drop is disposed within the channel and is sized with a first droplet portion, including a first capillary surface, protruding away from the first surface, and a second droplet portion, including a second capillary surface, protruding away from the second surface. The liquid lens further includes an oscillator operatively coupled to either the first droplet portion or the second droplet portion for oscillating the liquid drop within the channel. The imaging system, in addition to the oscillating liquid lens, also includes an image sensor coupled to an image path which passes through the first and second droplet portions for capturing one or more images through the oscillating liquid drop. | 12-24-2009 |
20100066838 | METHOD FOR CALIBRATING A STAGE-CAMERA SYSTEM, AND A STAGE-CAMERA SYSTEM - In a method for calibrating a stage-camera system, a travel distance of a stage is determined in a first coordinate system and an object displacement distance of at least one object is determined in a second coordinate system. A calibration measure for calibrating the coordinate systems is computed from the travel distance and the object displacement distance. The object displacement distance is determined by registering a calibration image with a reference image based on the at least one object. The method enables an automatic and accurate calibration of the stage-camera system. | 03-18-2010 |
20100079598 | Robust Stereo Calibration System and Method for Accurate Digital Image Correlation Measurements - A stereo calibration method is proposed to calibrate an interface's shape and position when the measurement system is in one media and measures deformation and strain of an object that is submerged in a different media. After the interface's shape and position are modeled by parameters, an explicit model of object points as measurement is established taking account of refraction happening at the interface. Efficiency and convergence are assured by using measurement of object points to acquire initial estimates for refraction angles at the interface. Then, an optimization method is performed to get the optimized value of interface parameters. Last, based on the resulting interface parameters, 3-dimensional positions of object points in all the subsequent measurement could be reconstructed accurately. Therefore, the distortion induced by refraction in the measurement is corrected. Numerical simulations of the proposed calibration process confirm that it is both robust and accurate for a range of experimental conditions, even in the presence of Gaussian noise in the measurement. | 04-01-2010 |
20100085434 | Spectrophotometers and systems therefor - A handheld device and system ins disclosed in which the device has a wide reading head with a narrow optical slot. The reader is used to read color patches on a target or the color output of a printer or other color reproducing device in which the colors to be measured are presented as a number of patches on a target. The light from the sensor is collimated and diffracted and focused onto a sensor for providing electrical signals indicative of the sensed patch. Repeated images of each test patch are taken and sent to the sensor. The output of the sensor is computed by on board electronics and an external computer to determine each color being measured. | 04-08-2010 |
20100097477 | Method of detecting defects in image sensor, tester for the method, and control signal generator for the method - A method of detecting defects in an image sensor that may occur from a floating diffusion area of the image sensor, a tester using the method, and a control signal generator using the method include a photo diode generating charges corresponding to an image signal; a transmission transistor having a first terminal connected to a the photodiode and a second terminal connected to a floating diffusion area, thereby transmitting the charges generated in the photo diode to the floating diffusion area in response to a charge transmission control signal; and a reset transistor having a first terminal applied by a reset voltage and a second transistor connected to the floating diffusion area, thereby transmitting the reset voltage to the floating diffusion area in response to a reset control signal. The reset transistor is turned on during at least one sampling zone selected between reset level sampling and signal level sampling that are performed with respect to the image sensor. | 04-22-2010 |
20100103270 | METHOD AND SYSTEM FOR PROVIDING ACCESS TO IMAGE SYSTEM SERVICES - A method and system according to the disclosure facilitates subscription based access to services for image systems including an image acquisition device configured to generate image data describing a target object in a target area of the image acquisition device and an image display device configured to generate a human perceptible rendering of the target object based on the image data. | 04-29-2010 |
20100141775 | Calibration of a surveying instrument - A method for calibrating a surveying instrument is disclosed, the survey instrument comprising a base element and a camera with an image sensor, the camera being rotatable about a vertical axis fixed with respect to said base element and being rotatable about a tilting axis, the tilting axis being rotated about the vertical axis with rotation of the camera about the vertical axis. In the method, data associated with calibration points and images of the calibration points on the image sensor captured in different faces are used, the data for each of said calibration points comprising distance data and the data for each of the images of each said calibration point comprising image position data and orientation data. Further, on the basis of the distance data for each of the calibration points and the image position and orientation data for each of the images of the calibration points the surveying instrument is calibrated simultaneously taking into account at least one optical property of the camera and at least one of the relative orientation of the vertical axis and the tilting axis and the orientation of the camera relative to one of the base element, the vertical axis and the tilting axis. | 06-10-2010 |
20100141776 | CALIBRATING DEVICE FOR CALIBRATION AND IMAGE MEASUREMENT SYSTEM COMPRISING CALIBRATING DEVICE - A calibrating device for calibration of an image measurement system. The calibrating device includes a main body having an upper surface, and a characteristic portion, which serves as a benchmark for calibration and is in the form of a recess formed in the upper surface of the main body, wherein the characteristic portion includes a side surface extending in a direction crossing the upper surface, and a bottom surface extending in a direction crossing the side surface, the bottom surface has an optical reflectance lower than an optical reflectance of the upper surface in relation to light identical to each other. This can provide a calibrating device for calibration of an image measurement system, which can detect the characteristic portion on the calibrating device stably, precisely and independent of the illumination conditions, which is less costly and can be easily handled. | 06-10-2010 |
20100165116 | CAMERA WITH DYNAMIC CALIBRATION AND METHOD THEREOF - A camera with dynamic calibration and a method thereof is provided. The camera is first subject to an initial calibration. Then, a motion amount of the camera is calculated, and a plurality of motion amount estimation samples of the camera is generated according to the motion amount. Then, a weight of each of the motion amount estimation samples is calculated. Thereafter, the plurality of motion amount estimation samples is re-sampled based on the weights, and the camera is calibrated by the re-sampled estimated motion samples. | 07-01-2010 |
20100171837 | VARYING CAMERA SELF-DETERMINATION BASED ON SUBJECT MOTION - In a method and digital camera, an initial set of evaluation images are captured. A plurality of characteristics of the initial set of evaluation images are assessed to provide a first assessment. The characteristics include subject motion between the initial set of evaluation images. When the subject motion is in excess of a predetermined threshold, a final capture state of the camera is set responsive to the first assessment. When the subject motion is less than the predetermined threshold, the evaluation images are analyzed to provide analysis results and the final capture state of the camera is set responsive to the first assessment and the analysis results. | 07-08-2010 |
20100188513 | SYSTEM AND METHOD FOR MONITORING CONNECTIONS WITHIN AN ANALOG VIDEO SYSTEM - The invention relates to a system and method for monitoring connection performance within a network. In one embodiment, the invention is implemented by analyzing an array of status bits outputted by an analog to digital video decoder. By storing and statistically analyzing an array of status information units, the person monitoring the network can quickly and efficiently be notified of a connection problem, such as a degrading connection resulting in an intermittent signal. In another embodiment, the system and method are implemented by analyzing an array of time stamps outputted when processing frames of video from an analog video camera. | 07-29-2010 |
20100194895 | Digital Image Acquisition Device with Built in Dust and Sensor Mapping Capability - A digital image acquisition device has an image acquisition sensor, a shutter, an aperture and optical elements for focusing an image on the sensor. The device includes a light source located in the body of the device. The light source is periodically activated with one of the aperture or shutter closed, and the device derives a map of defects on the surface of the sensor from a calibration image acquired by the sensor when illuminated by the light source. | 08-05-2010 |
20100245592 | CALIBRATING APPARATUS FOR ON-BOARD CAMERA OF VEHICLE - Provided is a calibrating apparatus for an on-board camera of a vehicle, which apparatus allows completion of calibration process with a simple additional calibration, even when rejection has issued on the result of automatic calibration. Based upon a camera parameter obtained at the time of completion of adjustment by an automatic adjusting section, a confirmation marker indicating the position of coordinate of a calibration point is displayed in superposition with a camera-captured image. A manual adjusting section adjusts the camera parameter, based on an amount of displacement of the coordinate of the calibration point corresponding to an amount of movement of the confirmation marker moved in response to input of adjustment instruction. In response to input of a determination instruction, a camera parameter setting section sets an undetermined camera parameter at the time of completion of the most recent adjustment by the automatic adjusting section and the manual adjusting section, as the camera parameter. | 09-30-2010 |
20100253784 | CALIBRATION METHOD AND APPARATUS FOR AUTOMOTIVE CAMERA SYSTEM, AND METHOD AND ECU FOR DETERMINING ANGULAR MISALIGNMENTS OF AUTOMOTIVE CAMERA SYSTEM - A method of automotive camera system calibration is disclosed in the present invention. At least two targets are placed within the field of view of each camera included in the system. Each camera captures the targets. Then, the vehicle is moved, and another image is captured. The images are used to derive the camera orientation parameters. Based on these parameters, misalignment of the cameras can be compensated by the image processing unit. | 10-07-2010 |
20100259622 | Determination of need to service a camera based on detection of blemishes in digital images - A method of automatically determining a need to service a digital image acquisition system including a digital camera with a lens assembly includes analyzing pixels within one or more acquired digital images according to probability determinations that such pixels correspond to blemish artifacts. It is automatically determined whether a threshold distribution of blemish artifacts is present within one or more of the digital images. A need for service is indicated when at least the threshold distribution is determined to be present. | 10-14-2010 |
20100259623 | Intelligent light source with synchronization with a digital camera - An intelligent light source for use with the test of a digital camera module provides a plurality of shapes of light. A fast light pulse is created with turn-on and turn-off transitions less than or equal to one microsecond. Other waveform shapes comprise a ramp and a sinusoid, and all shapes can be made to occur once or repetitively. The magnitude of the light has a range from 0.01 LUX to 1000 LUX, and the ramp has a ramp time that has a range from microseconds to 100 ms. The light comprises of a plurality of colors created by serial connected strings of LED devices, where the LED devices in a string emit the same color. The light emanating from the light source is calibrated using a photo diode and the control of a tester by adjusting offset voltages of a DAC controlling a current through the LED strings. | 10-14-2010 |
20100259624 | METHOD AND APPARATUS FOR CALIBRATING VIDEO CAMERA - A method for calibrating the video camera includes: obtaining the internal and external parameters of the video camera according to a reference template; recording data of a reference object in the scene; obtaining images of the reference object from at least two perspectives; and obtaining the internal and external parameters of the video camera according to the recorded data of the reference object. An apparatus for calibrating the video camera includes: a preliminary calibration unit, configured to obtain the internal and external parameters of the video camera according to a reference template, and record the data of a reference object in the scene; a recalibration unit, configured to obtain images of the reference object from at least two perspectives, and obtain the internal and external parameters of the video camera according to the recorded data of the reference object. The invention is applicable to various scenes and features simple operations. | 10-14-2010 |
20100265335 | IMAGE CALIBRATION METHOD AND IMAGE PROCESSING SYSTEM UTILIZING THE METHOD - An image calibration method includes: (a) sensing at least one target pixel of a sensing row from an effective pixel region of an image sensor to generate at least one target pixel value; (b) sensing at least one reference pixel of a shading region in the image sensor to generate a calibration value, wherein the reference pixel and the sensing row do not belong to the same row; and (c) referring to the calibration value to calibrate and output the target pixel value. | 10-21-2010 |
20100265336 | Digital camera and method for testing the function of a digital camera - The invention refers to a digital camera | 10-21-2010 |
20100271489 | Imaging unit, apparatus comprising an imaging unit, a system, and methods for calibrating an imaging apparatus - An apparatus includes an electronic imaging module, a calibration memory including stored calibration data indicative of specific characteristics of said electronic imaging module, and at least one register including stored allocation data indicative of composition of said stored calibration data. | 10-28-2010 |
20100302379 | METHOD FOR TESTING CAMERA FUNCTION OF ELECTRONIC DEVICE - A method is provided for testing a camera function of an electronic device. The electronic device communicates with a testing device. The method comprises the following steps. Parameters are configured by a parameter module of the electronic device. A camera of the electronic device takes pictures according to the configured parameters. The pictures and the configured parameters are sent to the testing device by a sending module of the electronic device. The pictures and the configured parameters are received by a receiving module of the testing device. Parameters of the pictures are got by a judging module of the testing device, and the judging module judges whether the parameters are identical to the configured parameters. | 12-02-2010 |
20100315513 | Method And Apparatus For Compressive Imaging Device Having Startle Reflex - A method and apparatus for new digital image/video camera that directly acquires random projections of the incident light field without first collecting the pixels/voxels and has a startle reflex. The startle reflex is achieved by collecting a training set of samples while operating the imaging device at the low sampling rate, computing an empirical probability distribution of the training set of samples, collecting a testing set of samples while operating the imaging device at the low sampling rate, computing an empirical probability distribution of the testing set of samples, computing an empirical entropy test statistic, and capturing an image at the high sampling rate in response to the computed empirical entropy statistic exceeding a threshold. | 12-16-2010 |
20100315514 | IMAGING APPARATUS AND IMAGING CONTROL METHOD - An imaging apparatus includes: an imaging optical system including a focus lens; an imaging element generates an image indicating an object image; a lens drive device which moves the focus lens along an optical axis direction of the imaging optical system; an evaluation value calculation device which calculates an evaluation value of a contrast for each of a plurality of evaluation value calculation areas while moving the focus lens; a point light source presence/absence determination device which determines a presence or absence of a point light source in a specific region of the image; an area selection device which selects a focusing determination area based on the presence or absence of the point light source; and a focusing control device which determines the focusing position of the focus lens based on the evaluation value in the focusing determination area and moves the focus lens to the focusing position. | 12-16-2010 |
20100321506 | CALIBRATION TECHNIQUES FOR CAMERA MODULES - A set of calibration procedures that can be run to assist in calibrating a camera module, such as may be intended for installation into a mobile consumer device. The procedures include lens shading calibration, white balance calibration, light source color temperature calibration, auto focus macro calibration, static defect pixel calibration, and mechanical shutter delay calibration. The light source color temperature calibration may be performed to assist in the other calibrations, each of which may generate data that can be potentially be stored in non-volatile memory on board the camera module for use during operation. | 12-23-2010 |
20110001832 | CIRCUITS AND METHODS FOR CALIBRATING LENS DISPLACEMENT - Embodiments of the present invention include circuits and methods for calibrating lens displacement in a voltage controlled actuator. In one embodiment, a calibration circuit comprises a programmable voltage source that provides a voltage to a control terminal of an actuator to set a lens displacement, a switch that selectively decouples said programmable voltage source from said control terminal, a current source that provides a reference current to said control terminal when the control terminal is decoupled from said programmable voltage source, a comparator that senses a voltage difference between said programmable voltage source and said control terminal, and a timer coupled to an output of the comparator. The timer measures a time period required to increase the control terminal voltage. The capacitance of the actuator may be determined and used to calibrate the position of a lens. | 01-06-2011 |
20110074961 | SYSTEM AND METHOD FOR TESTING A DIGITAL CAMERA MODULE - A method for testing a digital camera module reads a digital image from the digital camera module under test, extracts a tricolor coefficient of each pixel of the digital image to form a measurement array, and compares the measurement array with a reference array to find tricolor coefficient differences. The method extracts an edge of the digital image, processes the edge of the digital image using binarization to obtain measurement binary values, and compares the measurement binary values with reference binary values to find binary values differences. The method further compares a count of the tricolor coefficient differences with a first acceptable value, and compares a count of the binary values differences with a second acceptable value to determine quality of the digital camera module. | 03-31-2011 |
20110096170 | System and Method for Video Quality Parametric Tests - A method and system for automatically evaluating the quality of a signal transmitted by an imaging device. The amount of noise in the video signal is analyzed using an algorithm that does not require comparison to a template signal. The results of the algorithm determine whether the signal meets a pre-determined threshold value for signal quality. | 04-28-2011 |
20110096171 | FOCAL POINT ADJUSTING APPARATUS, IMAGE-TAKING APPARATUS, INTERCHANGEABLE LENS, CONVERSION COEFFICIENT CALIBRATING METHOD, AND CONVERSION COEFFICIENT CALIBRATING PROGRAM - A focal point adjusting apparatus comprises: a photoelectric converting unit that photoelectrically converts at least a pair of optical images and outputs at least a pair of image signals; a phase difference detecting unit that detects the phase difference between the pair of image signals that is output by the photoelectric conversion unit; a conversion unit that carries out the conversion of a phase difference that is detected by the phase difference detecting unit into a defocus amount by using a conversion coefficient; a focal point moving unit that moves the focal point position based on the defocus amount resulting of the conversion by the conversion unit; and a calibrating unit that calibrates the conversion coefficient depending on the result of the focal point moving unit moving the focal point position when the operator photographs a subject. | 04-28-2011 |
20110102603 | SYSTEM AND METHOD FOR TESTING A CAMERA MODULE OF AN ELECTRONIC DEVICE - A method for testing a camera module of an electronic device includes following blocks. An analysis module and a control module are installed in the electronic device. A test fixture is utilized to secure the electronic device. The control module instructs the camera module to capture a video and a photo. The analysis module automatically examines whether the video and the photo fall within predetermined parameters. A system associated with above method for testing the camera module of the electronic device is also disclosed. | 05-05-2011 |
20110115921 | Context Constrained Novel View Interpolation - Aspects of the present invention include systems and methods for generating a novel view interpolation. In embodiments, feature correspondences and geometrical contexts are used to find additional correspondences based on the assumption of the local linear transformation. The accuracy and the number of correspondence matches may be improved by iterative refinement. Having obtained a set of correspondences, a novel view image can be generated. | 05-19-2011 |
20110122257 | GEOLOCATION OF OBJECTS IN AN AREA OF INTEREST - A system comprises a plurality of fixed cameras that each having a field of regard. Each point within an area of interest is covered by the field of regard of at least two of the cameras. Each camera captures an image of its field of regard and a plurality of calibration points within the area of interest. A processor calibrates the imaging system by at least associating the coordinates of each of the plurality of calibration points with a calibration pixel corresponding to an image of the calibration point in the image of each of the cameras. The processor geolocates the object of interest within the area of interest by at least comparing the location an image of the object of interest to the calibration pixels in the images generated by each of the plurality of cameras. | 05-26-2011 |
20110128388 | CAMERA CALIBRATION SYSTEM AND COORDINATE DATA GENERATION SYSTEM AND METHOD THEREOF - A camera calibration system including a coordinate data generation device and a coordinate data recognition device is provided. The coordinate data generation device generates a plurality of map coordinate data corresponding to a plurality of real positions in a real scene. The coordinate data recognition device receives an image plane of the real scene from a camera to be calibrated and receives the map coordinate data from the coordinate data generation device. Besides, the coordinate data recognition device recognizes image positions corresponding to the real positions in the image plane and calculates image coordinate data corresponding to the image positions. Moreover, the coordinate data recognition device calculates a coordinate transform matrix corresponding to the camera according to the image coordinate data and the map coordinate data. Thereby, the camera calibration system can finish the calibration of the camera quickly. | 06-02-2011 |
20110134253 | CAMERA CALIBRATION METHOD AND CAMERA CALIBRATION APPARATUS - With the distance between a reference plane and a line light source ( | 06-09-2011 |
20110134254 | MEASURING AND CORRECTING LENS DISTORTION IN A MULTISPOT SCANNING DEVICE - The invention provides a method of determining the distortion of an imaging system ( | 06-09-2011 |
20110141291 | MULTI-PHASE BLACK LEVEL CALIBRATION METHOD AND SYSTEM - Multi-phase black level calibration (BLC) methods and systems are generally disclosed. According to one embodiment of the present invention, an image sensor comprises a pixel sensor array, a timing generator, and a front-end processing block. The front-end processing block also includes a first summing junction, a first BLC block, and a second BLC block. According to a first timing signal from the timing generator, the first BLC block is configured to iteratively generate a first calibration signal in a first phase based on a first set of adjusted black level signals associated with a first set of black pixels, a changing accumulator step, and a predetermined condition associated with a first target black level. According to a second timing signal from the timing generator, the second BLC block is configured to generate a second calibration signal for a second summing junction to apply to an image signal associated with one or more active pixels in the frame in a second phase. | 06-16-2011 |
20110141292 | METHOD AND SYSTEM FOR MEASURING DEFLECTION ANGLE OF A CAMERA LENS - A system for measuring lens deflection of an electronic device includes a first shape, an image processing module, a first angle calculation module, and a second angle calculation module. The first shape is formed by edges of an ideal image captured that corresponds to a correctly mounted lens in the electronic device. The image processing module processes a currently captured image to acquire a second shape formed by edges of the present image. The first shape and the second shaped are imposed on each other. The first angle calculation module computes a first angle according to a rotation angle of the second shape relative to the first shape. A second angle calculation module computes a second angle according to a translating distance of the second shape relative to the first shape. | 06-16-2011 |
20110149084 | Method for testing an optical apparatus - A method for testing an optic investigation system with a light source and an imaging device for the optic investigation of an object in remitted light and fluorescent light, where the light source is configured to generate illuminating light with a first predetermined illumination spectrum or with a second predetermined illumination spectrum, and where an observation beam path of the imaging device includes a first predetermined transmission spectrum or a second predetermined transmission spectrum, the imaging device is positioned with respect to a reference surface with an indicator area with a wavelength-dependent optical property, where the optical property essentially varies between a first focal point of a first product of a first predetermined illumination spectrum and the first predetermined transmission spectrum and a second focal point of a second product of the second predetermined illumination spectrum and the second predetermined transmission spectrum. The reference surface is illuminated with illuminating light from the light source. On the basis of the recorded image a determination is made as to which illumination spectrum and which transmission spectrum are present in the observation beam path on recording the image. | 06-23-2011 |
20110157373 | SYSTEM AND METHOD FOR RUNTIME DETERMINATION OF CAMERA MISCALIBRATION - This invention provides a system and method for runtime determination (self-diagnosis) of camera miscalibration (accuracy), typically related to camera extrinsics, based on historical statistics of runtime alignment scores for objects acquired in the scene, which are defined based on matching of observed and expected image data of trained object models. This arrangement avoids a need to cease runtime operation of the vision system and/or stop the production line that is served by the vision system to diagnose if the system's camera(s) remain calibrated. Under the assumption that objects or features inspected by the vision system over time are substantially the same, the vision system accumulates statistics of part alignment results and stores intermediate results to be used as indicator of current system accuracy. For multi-camera vision systems, cross validation is illustratively employed to identify individual problematic cameras. The system and method allows for faster, less-expensive and more-straightforward diagnosis of vision system failures related to deteriorating camera calibration. | 06-30-2011 |
20110181733 | CALIBRATING APPARATUS - A calibrating apparatus includes a first reproducer which reproduces a reference image representing a state in which a plane is overlooked, along an X axis and a Y axis orthogonal to each other. A second reproducer reproduces a scene image outputted from a camera that captures the plane, along a U axis and a V axis orthogonal to each other. An acceptor accepts a designating manipulation of designating a first area of an X-Y coordinate system, in association with a reproducing process of the first reproducer. A first calculator calculates a second area of a U-V coordinate system corresponding to the first area designated by the designating manipulation, by referring to a calibration parameter indicating a corresponding relationship between the X-Y coordinate system and the U-V coordinate system. A definer defines the second area calculated by the first calculator, in association with a reproducing process of the second reproducer. | 07-28-2011 |
20110181734 | CALIBRATION PARAMETER CREATING APPARATUS - A calibration parameter creating apparatus includes a first reproducer. A first reproducer reproduces a reference image representing a state in which a plane is overlooked, along an X axis and a Y axis orthogonal to each other. A first acceptor accepts a first designating manipulation designating a plurality of X-Y coordinates on the reference image reproduced by the first reproducer. A determiner determines whether or not a designated manner by the first designating manipulation matches an error condition, based on the plurality of X-Y coordinates designated by the first designating manipulation. A first generator generates a notification when a determined result of the determiner is positive. A calculator calculates a calibration parameter indicating a corresponding relationship between an X-Y coordinate system and a U-V coordinate system based on the X-Y coordinates designated by the first designating manipulation, when the determined result of the determiner is negative. | 07-28-2011 |
20110211076 | SYSTEMS AND METHODS FOR ON-LINE MARKER-LESS CAMERA CALIBRATION USING A POSITION TRACKING SYSTEM - Certain embodiments of the present invention provide methods and systems for calibration of an imaging camera or other image acquisition device. Certain embodiments include characterizing a transformation from a coordinate system of an imager to a coordinate system of a first sensor positioned with respect to the imager using a first off-line calibration. Certain embodiments also include characterizing a transformation from a coordinate system of an imaging camera source to a coordinate system of a second sensor positioned with respect to the imaging camera source using a second off-line calibration. Additionally, certain embodiments include quantifying intrinsic parameters of the imaging camera source based on a transformation from the coordinate system of the imager to the coordinate system of the imaging camera source based on the first and second off-line calibrations and information from the first and second sensors and a transmitter positioned with respect to an object being imaged. | 09-01-2011 |
20110228102 | SHAKE MEASUREMENT SYSTEM, SHAKE MEASUREMENT METHOD, AND IMAGING DEVICE - A shake measurement system ( | 09-22-2011 |
20110228103 | IMAGE CAPTURE ENVIRONMENT CALIBRATION METHOD AND INFORMATION PROCESSING APPARATUS - In a method of calibrating an image capture environment based on a captured image obtained by capturing an image of a physical space by an image capturing unit that captures the image of the physical space, an image of the physical space is captured using the image capturing unit, an index serving as a reference for calibration is detected from the captured image of the physical space, the position and orientation of the image capturing unit are calculated from the detected index, and image capturing unit unique information, geometric information associated with the physical space, or the relationship between the image capturing unit and the physical space is calibrated using the obtained data. | 09-22-2011 |
20110234811 | OPTIMAL RAW RGB DETERMINATION FOR COLOR CALIBRATION - Improving color calibration, and similar operations, by generating an optimal raw RGB color chart, in the raw RGB domain, for an imaging device with a given type of image sensor, such as for a digital still camera. Calibration is performed in response to a constraint which takes into account the spectral sensitivity of the image sensor used on the camera as well as spectral reflectance and spectral radiance of multiple illuminants. Calibration is performed using the raw RGB color chart which is illuminant independent and image sensor specific and which can match the calibration performance of known calibration standards, such as Macbeth 24. | 09-29-2011 |
20110234812 | METHOD AND A SYSTEM FOR DETERMINING A TARGET IN A BIOLOGICAL SAMPLE BY IMAGE ANALYSIS - The present invention relates to methods for identifying and optionally quantifying stained cells in a cell or tissue sample and determining expression level of a target, as well as methods for determining staining intensity and/or staining quality of a stained sample, calibrating digital imaging apparatus using the methods, as well as systems and a computer readable mediums therefore. In particular the invention relates to a method for identifying stained targets in a sample and uses of said method, said method comprising providing at least one digital representation of the sample wherein the sample has been stained with a stain staining a target, and filtering the digital representation with at least three filters, each of said filters comprising filter constants), applying said filter constant(s) to each pixels in at least a subset of the digital representation and determining an eigensolution based on the filter output for each pixel in the subset, wherein said filters are capable of enhancing the stained targets obtaining a filtered representation, segmenting the digital representation based on information from the optionally normalized filtered representation into stained cell targets and background, optionally combining with the digital representation, thereby obtaining a segmented representation, wherein said segmented representation discriminates between stained targets and other structures in the digital representation, and from said segmented representation identifying the stained targets in the sample. | 09-29-2011 |
20110234813 | SENSOR MODULE AND METHOD FOR MONITORING THE FUNCTION THEREOF - In a method for monitoring the function of a sensor module, which has a sensor, by means of the sensor a measurement signal for a physical quantity to be determined is generated and applied to an output terminal in an unchanged form or in processed form—after at least one linear signal processing step and/or at least one nonlinear signal processing step are performed. In addition, a test signal is generated whose spectrum lies substantially outside the spectrum of the measurement signal. The test signal is supplied at a place in the sensor from which it reaches the output terminal in unchanged form or in processed form—after the performance of the at least one linear signal processing step—only in the case of a functional sensor. An output signal present at the output terminal is compared with the test signal and a diagnosis signal is generated, which indicates whether the test signal is present at the output terminal. The test signal is filtered out of the output signal and the remaining signal is applied as the measurement signal at a measurement signal output of the sensor module. | 09-29-2011 |
20110242331 | DIAGNOSIS UNIT FOR AN ELECTRONIC CAMERA AND CAMERA SYSTEM - A diagnosis unit for an electronic camera comprises a housing and a coupling device for coupling the diagnosis unit to an objective connection of a camera or to a camera objective, wherein the coupling device surrounds a light exit opening of the housing. The diagnosis unit further comprises at least one light source arranged in the housing for outputting a diagnosis illumination through the light exit opening, and an interface for electrically connecting the diagnosis unit to a camera. A camera system comprises a diagnosis unit and an electronic camera having an image sensor. | 10-06-2011 |
20110261208 | METHOD OF AUTOMATICALLY CALIBRATING A VISUAL PARAMETER FOR AN IMAGING DEVICE - A method of automatically calibrating a visual parameter, such as luminance or contrast, for an imaging device is disclosed. A ratio of visual parameter difference to lens position difference between two predetermined lens positions is pre-determined for a predetermined focal length. A target visual parameter is then obtained according to the pre-determined ratio, a current visual parameter and lens position difference between a current lens position and a target lens position. Finally, the current visual parameter is updated by the target visual parameter in an automatic mode. | 10-27-2011 |
20110261209 | DIGITAL IMAGING APPARATUS AND RELATED OBJECT INSPECTION SYSTEM - A digital imaging apparatus is disclosed including: a light source module; an image synchronization signal generator for generating an image synchronization signal; and a light source controller, coupled with the light source module and the image synchronization signal generator, for generating a light source control signal having a frequency corresponding to the image synchronization signal and synchronized with the image synchronization signal to control the light output of the light source module. | 10-27-2011 |
20110273569 | MONITORING OF OPTICAL DEFECTS IN AN IMAGE CAPTURE SYSTEM - Method of monitoring an image capture system ( | 11-10-2011 |
20110279685 | METHOD AND SYSTEM FOR AUTOMATIC OBJECTS LOCALIZATION - A method for automatic localization of objects in a mask. The method includes building a dictionary of atoms, wherein each atom models the presence of one object at one location and iteratively determining the atom of said dictionary which is best correlated with said mask, until ending criteria are met. The invention system concerns also automatically detects objects in a mask. At least one fixed camera is provided for acquiring video frames. A computation device is used for calibrating at least one fixed camera for extracting foreground silhouettes in each acquired video frames for discretizing said ground plane into a non-regular grid of potential location points for constructing a dictionary of atoms, and, for finding objects location points with the previous method. And a for propagating device is provided to propagate the result in at least one fixed camera view. | 11-17-2011 |
20110285857 | OPTICAL TESTING APPARATUS AND TESTING METHOD THEREOF - An optical testing apparatus can be operated according to a testing method to test quality of an imaging module of an electronic device. The optical testing apparatus includes a projector, a temperature control device, a processor, and a controller. The controller can control the imaging module to capture an image from the projector and transmit the captured image to the processor. The processor processes the captured image to determine the quality of the imaging module. | 11-24-2011 |
20110285858 | DYNAMIC CALIBRATION METHOD FOR SINGLE AND MULTIPLE VIDEO CAPTURE DEVICES - The present invention discloses a dynamic calibration method for a single and multiple video capture devices. The present invention can acquire the variations of the pan angle and tilt angle of a single video capture device according to the displacement of the feature points between successive images. For a plurality of video capture devices, the present invention includes the epipolar-plane constraint between a plurality of video capture devices to achieve the goal of dynamical calibration. The calibration method in the present invention does not require specific calibration patterns or complicated correspondence of feature points, and can be applied to surveillance systems with wide-range coverage. | 11-24-2011 |
20110298934 | Method and Apparatus for Human Interface to a Machine Vision System - An apparatus and method are disclosed for setting up a vision system having a camera and a vision processor cooperative with the camera. The apparatus includes a gesture recognizer, a key recognizer, a breakout box having at least two signaling elements, and a setup control unit that is cooperative with the gesture recognizer, the key recognizer, and the breakout box. The combination of using a key and a gesture set as herein described is substantially superior, as compared with known user interfaces for setting up a vision system that has been previously been engineered, in terms of low-cost, convenience, ease-of-use, simplicity, and speed. | 12-08-2011 |
20110310254 | Optical Alignment Structures And Associated Methods - A method of mutually aligning first and second imaging system fixturing components forms a first alignment structure on the first imaging system fixturing component, a second alignment structure on the second imaging system fixturing component, and engages the first and second alignment structures to align, with optical accuracy, the first and second imaging system fixturing components. | 12-22-2011 |
20110310255 | CALIBRATION OF LARGE CAMERA NETWORKS - The present disclosure relates to a sensor network including a plurality of nodes, each node having a directional sensor, a communication module, and a processor configured to receive local measurements of a calibration object from the directional sensor, receive additional measurements of the calibration object from neighboring nodes via the communication module, estimate an initial set of calibration parameters in response to the local and additional measurements, receive additional sets of calibration parameters from neighboring nodes via the communication module, and recursively estimate an updated set of calibration parameters in response to the additional sets of calibration parameters. Additional systems and methods for calibrating a large network of camera nodes are disclosed. | 12-22-2011 |
20120002057 | CAMERA CALIBRATION APPARATUS - A captured image including a preferential calibration index arranged in an exclusive region in a first plane and a non-preferential calibration index arranged in a common region is obtained. First, the coordinate position of the preferential calibration index is detected, and then the coordinate position of the non-preferential calibration index is calculated based on the positional relationship with the detected preferential calibration index. A homography between a captured-image surface of the image surface and the first plane is calculated based on the actual coordinate positions and the calculated coordinate positions representing the coordinates of at least four points, and camera calibration is performed using the homography. | 01-05-2012 |
20120013747 | IMAGE TESTING METHOD OF IMAGE PICKUP DEVICE AND IMAGE TESTING APPARATUS USING SUCH METHOD - An image testing method of an image pickup device and an image testing apparatus using such a method are provided. The image testing apparatus is in communication with the image pickup device. The image testing apparatus includes an image processing program, a multi-core processing unit and a storage unit. The image processing program is used for segmenting the main image, which is acquired by the image pickup device, into plural sub-image blocks, and transmitting the sub-image blocks to respective threads. The multi-core processing unit is used for synchronously executing the threads, thereby synchronously analyzing imaging quality of respective sub-image blocks. The storage unit is used for storing analyzing results of respective sub-image blocks. The analyzing results of respective sub-image blocks stored in the storage unit are combined together by the multi-core processing unit, thereby acquiring the imaging quality of the main image. | 01-19-2012 |
20120019669 | SYSTEMS AND METHODS FOR CALIBRATING IMAGE SENSORS - Systems and methods are provided for calibrating image sensors. In some embodiments, a processing module of an image system can automatically perform a self-calibration process after a production unit of an image sensor has been integrated into an end product system. For example, the processing module can calibrate a production unit based on one or more reference pixels of the production unit, where the one or more reference pixels have minimal color filtration. In some embodiments, the processing module may perform local calibrations by correcting specifically for spatial variations in a color filter array (“CFA”). In some embodiments, the processing module can perform global calibrations by correcting for optical density variations in the CFA. In some embodiments, a processing module can determine whether the cause of production variations is related to production variations of a CFA or production variations of an infrared (“IR”) cutoff filter. | 01-26-2012 |
20120026341 | AUTO IRIS LENS CALIBRATION DEVICE AND METHOD - An iris calibration device includes one or more groups of light sources, a microcontroller (MCU), and a display. The MCU connects to a system on chip (SoC) of a digital camera device. The digital camera device includes an iris lens. The MCU receives an “on” command or an “off” command from the SoC. The MCU turns on or turn off a group of light sources according to the “on” command or the “off” command The SoC adjusts the iris lens according to an average luminance of the one or more light sources sensed by a sensor of the digital camera device. | 02-02-2012 |
20120033087 | CALIBRATION TARGET DETECTION APPARATUS, CALIBRATION TARGET DETECTING METHOD FOR DETECTING CALIBRATION TARGET, AND PROGRAM FOR CALIBRATION TARGET DETECTION APPARATUS - There is disclosed a calibration target detection apparatus that can be obtained at a low cost and without increasing storage capacity, is the apparatus being provided with: a light measurement region setting unit for setting a long light measurement region; a light-measuring unit for detecting light measurement information of the light measurement region; a profile generation unit for generating a first profile, wherein the long light measurement region taking a predetermined one direction as a long direction is scanned along the other direction orthogonal to the one direction, and the change in the light measurement information in the other direction is shown; and a second profile, wherein the long light measurement region taking the other direction as the long direction is scanned along the one direction, and the change in the light measurement information in the one direction is shown; and a position calculation unit for calculating, on the basis of a characteristic point of the first and second profiles, a position of a calibration target or a position of a predetermined location of the calibration target, the calibration target being used for calibrating an onboard camera, and the calibration target being included in a captured image acquired by the onboard camera. | 02-09-2012 |
20120038779 | Multiple Frame Grabber - A system is presented that applies M×N×K computational units to calculating image parameters on N picture images captured simultaneously by N digital camera devices, where there are N groups of frame grabber units, each containing M frame grabbers in which there are K computational units. The data operated on by a computational unit is separate and independent from the image data operated on by the other computational units. This results in a performance speedup of M×N×K compared to one computational unit making the same computations. A master frame grabber unit controls the illumination of the N digital camera devices, and synchronizes the illumination with the clocks of the N digital camera devices. | 02-16-2012 |
20120075481 | Method for authenticating a charge-coupled device (CCD) - In a method for authenticating a charge-coupled device (CCD), e.g., in a digital camera including the charge-coupled device, a physical unclonable function is utilized for the authentication. In the method, a response to be measured of pixels in the charge-coupled device to a defined incident light is used as the physical unclonable function. | 03-29-2012 |
20120086811 | METHOD FOR ELIMINATING CHROMATIC ABERRATION CAUSED BY AN IMAGING ENVIRONMENT AND FOR TESTING STABILITY OF THE IMAGING ENVIRONMENT, AND CHROMATIC ABERRATION CALIBRATION DEVICE FOR USE WITH THE SAME - A method for eliminating chromatic aberration caused by an imaging environment and for testing stability of the imaging environment is disclosed, along with a chromatic aberration calibration device for use with the same method. The method serves to detect errors resulting from environmental factors and human factors and, by using a specific measurement distance and angle, eliminate chromatic aberration caused by such factors. Environmental factors include variations of the image capture device itself; the hue, lightness, and chroma of external light; and the distance and angle between the chromatic aberration calibration device and the image capture device. Human factors include operator-related variations, focusing variations, and hand tremor during measurement. When the same chromatic aberration calibration device and imaging environment are used, the method can show color variations caused by the environmental and human factors in the image capture process and thereby determine whether the imaging environment has the expected stability. | 04-12-2012 |
20120086812 | DIGITAL CAMERA IMAGING EVALUATION MODULE - An operator friendly camera testing module is described. The camera testing module includes at least a color shift evaluation unit and a color non-uniformity evaluation unit. The color shift evaluation unit providing a color shift metric and the color non-uniformity evaluation unit providing a color non-uniformity metric each used to characterize a digital camera. | 04-12-2012 |
20120098975 | COLOR IMAGE SENSOR ARRAY WITH COLOR CROSSTALK TEST PATTERNS - An integrated circuit comprises a semiconductor substrate and a color image sensor array on the substrate. The color image sensor array has a first configuration of color pixels for collecting color image data, and at least one crosstalk test pattern on the substrate proximate the color image sensor array. The crosstalk test pattern includes a plurality of color sensing pixels arranged for making color crosstalk measurements. The test pattern configuration is different from the first configuration. | 04-26-2012 |
20120098976 | RADIOMETRIC CALIBRATION USING TEMPORAL IRRADIANCE MIXTURES - A method of calibrating a brightness value measured by a camera with an amount of light received by the camera includes creating a series of measurements, wherein for each measurement the amount of light received at an image plane in the camera is controlled to be a known ratio of two opposed irradiance values: a high irradiance value and a low irradiance value. Each ratio is correlated with the brightness value measured by the camera. A function is obtained describing the correlation. | 04-26-2012 |
20120120255 | METHOD FOR ESTIMATING A DEFECT IN AN IMAGE-CAPTURING SYSTEM, AND ASSOCIATED SYSTEMS - The invention relates to a method for estimating a defect in an image-capturing system ( | 05-17-2012 |
20120127322 | APPARATUS, METHOD, AND MANUFACTURE FOR CORRECTING COLOR SHADING IN CMOS IMAGE SENSORS - A device for color shading correction is provided. Local color matching is performed as follows. For each pixel of the image that is being color matched, the RGB value is treated as a one-by-three matrix, which is multiplied by a three-by-three matrix that is generated during factory calibration. The matrix product is a one-by-three matrix that is used as the RGB value for the pixel in the color matched image. | 05-24-2012 |
20120133780 | CAMERA CALIBRATION WITH LENS DISTORTION FROM LOW-RANK TEXTURES - A “Camera Calibrator” provides various techniques for recovering intrinsic camera parameters and distortion characteristics by processing a set of one or more input images. These techniques are based on extracting “Transform Invariant Low-Rank Textures” (TILT) from input images using high-dimensional convex optimization tools for matrix rank minimization and sparse signal recovery. The Camera Calibrator provides a simple, accurate, and flexible method to calibrate intrinsic parameters of a camera even with significant lens distortion, noise, errors, partial occlusions, illumination and viewpoint change, etc. Distortions caused by the camera can then be automatically corrected or removed from images. Calibration is achieved under a wide range of practical scenarios, including using multiple images of a known pattern, multiple images of an unknown pattern, single or multiple images of multiple patterns, etc. Significantly, calibration is achieved without extracting or manually identifying low-level features such as corners or edges from the calibration images. | 05-31-2012 |
20120147196 | CALIBRATION METHOD AND APPARATUS FOR OPTICAL IMAGING LENS SYSTEM WITH DOUBLE OPTICAL PATHS - This invention provides a calibration method and a corresponding apparatus for optical imaging lens system with double optical paths. The apparatus for optical imaging lens system with double optical paths comprises a first optical subsystem, a second optical subsystem and a calibration module. The calibration module receives a first image data from the first optical subsystem and a second image data from the second optical subsystem. The calibration module calibrates the first image data according to at least one selected optical parameter of the second optical subsystem, and calibrates the second image data according to at least one selected optical parameter of the first optical subsystem. The selected optical parameters of the first optical subsystem and the second optical subsystem are different. | 06-14-2012 |
20120147197 | METHOD AND DIGITAL VIDEO CAMERA FOR IMPROVING THE IMAGE QUALITY OF IMAGES IN A VIDEO IMAGE STREAM - A digital video camera performs a method to improve the image quality of captured images in a video image stream. The method includes capturing a first subset of images, outputting the images of the first subset of images as the video image stream, moving an image sensor and/or a lens of the digital video camera from a respective normal position to a respective test position before capturing an image of a second subset of images. The digital video camera captures a second subset of images interspersed with the first subset of images, compares image quality of the first subset of images with an image of the second subset of images, and determines if the image of the second subset of images exhibits improved image quality as compared with the image of the first subset of images. If so, an image quality improvement operation is initiated. | 06-14-2012 |
20120147198 | RADIOMETRIC CALIBRATION FROM NOISE DISTRIBUTIONS - Technologies that enable correcting for the non-linear relationship between scene irradiance and digital pixel intensity values of an image of the scene produced by a camera. Imaging noise is used as a signal from which a corrective function is derived. Noise distributions from the image are evaluated to determine the radiometric response function of the camera, from which an inverse response function is computed and used for calibration. | 06-14-2012 |
20120154603 | IMAGE RECORDING SYSTEM AND METHOD OF CALIBRATING, COMPRESSING AND DECOMPRESSING IMAGE SIGNAL VALUES - A method of calibrating, compressing and decompressing image signal values of an image sensor which has a plurality of light sensitive pixels arranged in rows and columns comprises the steps of: reading out the image signal values; compressing the image signal values; and decompressing the compressed image signal values, wherein the image signal values are calibrated while using calibration data sets which include a number of calibration values for each pixel. The method is characterized in that each calibration data set includes at least one first calibration value and at least one second calibration value, wherein the calibration of the image signal values includes a first calculation step which is carried out by the compression of the image signal values in order to calculate partly corrected image signal values while using the at least one first calibration value, and wherein the calibration of the image signal values includes a second calculation step which is carried out after decompressing the image signal values in order to calculate fully corrected image signal values while using the at least one second calibration value. An image recording system uses a corresponding method. | 06-21-2012 |
20120154604 | CAMERA RECALIBRATION SYSTEM AND THE METHOD THEREOF - The invention discloses a camera recalibration system and the method thereof. The camera recalibration system includes a first camera, which is to be recalibrated, for capturing image; an image processing unit comprising a storage unit for storing a first image and a second image, the second image being captured by the first camera; and a computing unit for measuring camera motion from the first image to the second image and computing calibration information corresponding to the camera motion; and a display unit for presenting the calibration information. | 06-21-2012 |
20120162441 | CAMERA CALIBRATION APPARATUS AND METHOD USING PARALLELOGRAMS IN IMAGE AND MULTI-VIEW CONTROL - Disclosed herein is a camera calibration apparatus. The camera calibration apparatus includes an image reception unit and a camera calibration unit. The image reception unit receives images, in which a same background is captured, from respective cameras placed at locations which are different from each other. The camera calibration unit calculates an entire matrix using canonic topographies for all parallelograms located on respective surfaces which are different from each other within each of the images, and calculates infinite hymnographies between the cameras using the entire matrix at the same time. | 06-28-2012 |
20120169886 | SYSTEM AND METHOD FOR TESTING APERTURE OF IMAGE CAPTURING DEVICE - In a method for testing an aperture of the image capturing device, a brightness value range of images is divided into a plurality of range intervals, and one of the range intervals is determined for testing the aperture. A brightness value of a current image captured by the image capturing device is calculated. A diameter of the aperture is controlled to increase or decrease to change the brightness value of the current image to be within the determined range interval, if the brightness value is not within the determined range interval. After the brightness of the current is changed to be within the determined range interval, if the brightness value of the current image has been changed during a predetermined time period, it is determined that the aperture does not work normally. | 07-05-2012 |
20120224069 | CALIBRATION APPARATUS, A DISTANCE MEASUREMENT SYSTEM, A CALIBRATION METHOD AND A CALIBRATION PROGRAM - A disclosed calibration apparatus is configured to receive inputs of two reference images and plural items of parallax data, these two reference images being captured by one of the imaging devices at two locations, and the parallax data being calculated using these two reference images and two corresponding images based on positions of plural feature points common to the reference image and the corresponding image for each pair thereof on a location basis, two corresponding images being captured by another of the imaging devices at these two locations; search for plural feature points common to these two reference images; calculate parallaxes and parallax changing amounts, based on the parallax data related to the respective feature points in these two reference images, for each of the searched feature points; and calculate a correction value for the parameter based on the calculated parallaxes and parallax changing amounts. | 09-06-2012 |
20120229652 | CAMERA MODULE TEST AND FOCUS CONTROLLING APPARATUS - The present invention relates to an apparatus for testing a camera module, and more specifically to a camera module test and focus controlling apparatus. The apparatus comprises: a base which is equipped with a first actuator, a second actuator, and a third actuator therein; a socket frame which is positioned on one upper side of the base, and is rotated by the first actuator; socket boards which are positioned on both sides of the socket frame, are lifted up and down by the second actuator, and are mounted with a camera module; a collet unit which is positioned in the upper part of the base, is disposed in a vertical line of the socket boards, and is rotated by a fourth actuator equipped in the upper part of the base; a rotational shaft which is positioned in the upper part of the base, and is connected to one side of the third actuator; a rotary plate which is rotated by the third actuator by being combined with the upper part of the rotational shaft, and is mounted with a lens and an illuminating unit therebetween; a first chart unit which is positioned in the upper part of the rotary plate; and a second chart unit which is fixed to the upper part of a connection member that is vertically extended from one side of the base in order to be parallel with the upper part of the base. | 09-13-2012 |
20120236157 | SYSTEMS AND METHODS FOR LENS CHARACTERIZATION - Methods and systems for analyzing camera lenses and presenting information regarding camera lenses performance are described. An interactive user interface is provided over a network for display on a user terminal by a computer system. A user request is received at the computer system from the user terminal for lens data from a first lens. Lens data, including test data obtained via a first digital image captured using the first lens at the first focal length setting and the first aperture setting is accessed from memory and transmitted to interactive user interface. The interactive user interface is configured to display an identification of the first camera body, an identification of the first lens, the first focal length setting used to capture the image, and the first aperture setting used to capture the image. Using the lens test data, the interactive user interface generates and displays sharpness graph data. | 09-20-2012 |
20120242839 | IMAGE SENSOR CALIBRATION SYSTEM AND METHOD - A calibration apparatus includes a calibration target such as a checkerboard, a frame configured to hold the checkerboard in place, a rotatable socket connected at one end to the frame, a stand which is connected to another end of the rotatable socket, a height adjusting portion connected at one end to the stand, and a platform connected to another end of the stand. The checkerboard can be tilted and moved to a particular distance and orientation with respect to an image system to be calibrated by the calibration apparatus. A method of identifying outlier images in the camera parameter estimation process, by using estimated 3D positions of the checkerboard compared with ground truth values. | 09-27-2012 |
20120249803 | MOTIONLESS FOCUS EVALUATION TEST STATION FOR ELECTRO-OPTIC (EO) SENSORS - A motionless focus evaluation test station is provided for measuring detector position error of EO sensors that do not possess dynamic focus capability. A positionally-fixed source emits EM radiation that diverges along an optical axis of the test station. Collimating optics collimate the EM radiation and direct it along the optical axis to the EO sensor. A positionally-fixed target is placed in the path of the diverging EM radiation nominally at the focal plane of the collimating optics. The target comprises a limiting aperture that exhibits an induced shift in optical focus at different positions along the aperture such that different positions on the target are imaged to different focal planes at the detector. The detector captures an image of the target that is blurred to either side of the spatial position that is optically conjugate to the actual detector position. A processor processes the image to measure the blur as function of spatial position to measure the actual detector position and output detector position error from a desired detector position. | 10-04-2012 |
20120274786 | CALIBRATING IMAGE SENSORS - In one implementation, an image sensor is calibrated by determining a spectral characterization for each image window of an image sensor, correlating the spectral characterization for each image window of the image sensor with a spectral property of a target illuminant, and generating a scale factor for each image window of the image sensor. The scale factor for each image window of the image sensor is generated based on the correlating. | 11-01-2012 |
20120274787 | Circuits and Methods for Calibrating Actuator Displacement - Embodiments of the present invention include circuits and methods for calibrating position displacement in a voltage controlled actuator. In one embodiment, a calibration circuit comprises an actuator having a control terminal for receiving a programmable control voltage to set a displacement, a switch that selectively decouples said programmable voltage from said control terminal and couples a reference current to said control terminal when the control terminal is decoupled from said control voltage, a comparator that senses a voltage difference between said control voltage and said control terminal, and a timer coupled to an output of the comparator. The timer measures a time period required to increase the control terminal voltage. The capacitance of the actuator may be determined and used to calibrate the position of the actuator. | 11-01-2012 |
20120281099 | DOUBLE PASS BACK SIDE IMAGE SENSOR SYSTEMS AND METHODS - Double pass back side image (BSI) sensor systems and methods are disclosed. The BSI sensor may include a substrate, pixel reflectors formed on the substrate, and pixel photodiodes fabricated in the substrate, each pixel photodiode positioned over a respective one of the pixel reflectors. Micro-lenses may be formed over each photodiode and an image filter may be formed between the photodiodes and the micro-lenses. The pixels reflectors, photodiodes, micro-lenses, and filter may be formed using CMOS fabrication. | 11-08-2012 |
20120293667 | INTRINSIC FEATURE-BASED POSE MEASUREMENT FOR IMAGING MOTION COMPENSATION - Systems and methods for generating motion corrected tomographic images are provided. A method includes obtaining first images of a region of interest (ROI) to be imaged and associated with a first time, where the first images are associated with different positions and orientations with respect to the ROI. The method also includes defining an active region in the each of the first images and selecting intrinsic features in each of the first images based on the active region. Second, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of second images of the ROI associated with a second time prior to the first time and computing three-dimensional (3D) coordinates for the portion of the intrinsic features. Finally, the method includes computing a relative pose for the first images based on the 3D coordinates. | 11-22-2012 |
20120307077 | ALIGNMENT APPARATUS - An alignment apparatus for adjusting an image sensor is provided. The alignment apparatus includes a first stage, a second stage, a positioning aligned unit, and an adjustment unit. The second stage is floatingly disposed on the first stage. The image sensor is adapted to be disposed on the second stage. The positioning aligned unit connected between the first stage and the second stage constrains the second stage on a datum surface above the first stage. The positioning aligned unit coupled to the second stage drives the second stage to rotate along the datum surface. | 12-06-2012 |
20120327251 | SYSTEMS AND METHODS FOR CALIBRATING AN IMAGER - One example discloses a method for calibrating an imager. A plurality of images of a target, each having an associated integration time, are captured at the imager. A representative digital count is determined for each of the plurality of images. Integration time is represented as a function of digital count from the respective digital counts and integration times associated with the plurality of images. A calibrated integration time is calculated from a target digital count. | 12-27-2012 |
20130016222 | AUTOMATIC ADAPTIVE IMAGE SHARPENINGAANM Jiang; XiaoyunAACI San DiegoAAST CAAACO USAAGP Jiang; Xiaoyun San Diego CA USAANM Haneda; EriAACI San DiegoAAST CAAACO USAAGP Haneda; Eri San Diego CA US - This disclosure describes techniques for initially calibrating an image capture device. According to one aspect, the calibration includes calibrating parameters of an image filter for resolving the captured image. The method includes receiving a captured image of a test target and resolving the captured image using a set of initial parameters. A sharpness index of the resolved image is determined without matching the captured image to the test target. The sharpness index is used to minimize a cost function for determining parameters for use by the image capture device. | 01-17-2013 |
20130016223 | METHOD AND APPARATUS FOR CAMERA NETWORK CALIBRATION WITH SMALL CALIBRATION PATTERNAANM KIM; Jae HeanAACI DaejeonAACO KRAAGP KIM; Jae Hean Daejeon KRAANM Kang; HyunAACI DaejeonAACO KRAAGP Kang; Hyun Daejeon KRAANM Lee; Ji HyungAACI DaejeonAACO KRAAGP Lee; Ji Hyung Daejeon KRAANM Koo; BonkiAACI DaejeonAACO KRAAGP Koo; Bonki Daejeon KR - A method for calibrating a camera network includes generating a projection matrix by each of cameras in respect of a calibration pattern that is disposed at a plurality of different positions in a photography zone. A portion of the projection matrix is produced as a sub-projection matrix. Sub-projection matrixes are arranged widthwise and lengthwise to generate one sub-measurement matrix. A singular value decomposition (SVD) is performed on the sub-measurement matrix to change the sub-measurement matrix into a matrix having a rank of 3 and a SVD is performed on the changed sub-measurement matrix. A rotation value of the calibration pattern, and an internal parameter and a rotation value of each camera are extracted to thereby calibrate the camera network. | 01-17-2013 |
20130027564 | METHOD AND APPARATUS FOR RAPID VERIFICATION OF IMAGING SYSTEMS - Imaging systems may be provided with image sensors having verification circuitry. Verification circuitry may be configured to verify proper operation of the image sensor during operation. Verification circuitry may include one or more switchable voltage contacts configured to generate a voltage drop across a power supply network of a pixel array during verification operations. Verification circuitry may include a controllable voltage supply coupled to the power supply network of the pixel array. Verification image data may be generated by applying the voltage drop or by using the controllable voltage supply to supply a different supply voltage to each row of pixels prior to readout of that row. Verification image data may be read out using the same circuitry that is used to readout imaging data. Based on a comparison of the verification data with a predetermined standard, imaging systems may continue to operate normally or corrective action may be taken. | 01-31-2013 |
20130027565 | IMAGE SENSORS WITH DARK PIXELS FOR REAL-TIME VERIFICATION OF IMAGING SYSTEMS - An imaging system may include an array of image pixels. The array of image pixels may be provided with one or more rows and columns of optically shielded dark image pixels. The dark image pixels may be used to produce verification image data that follows the same pixel-to-output data path of light-receiving pixels. The output signals from dark pixels may be continuously or intermittently compared with a set of expected output signals to verify that the imaging system is functioning properly. In some arrangements, verification image data may include a current frame number that is encoded into the dark pixels. The encoded current frame number may be compared with an expected current frame number. In other arrangements, dark pixels may be configured to have a predetermined pattern of conversion gain levels. The output signals may be compared with a “golden” image or other predetermined set of expected output signals. | 01-31-2013 |
20130027566 | IMAGING SYSTEMS WITH VERIFICATION CIRCUITRY FOR MONITORING STANDBY LEAKAGE CURRENT LEVELS - Imaging systems may be provided with image sensors having verification circuitry. Verification circuitry may be configured to continuously or occasionally verify that the image sensor is functioning properly. For example, verification circuitry may be configured to monitor levels of leakage current during standby mode. Verification circuitry may be coupled between a power supply and circuitry that is powered by that power supply. When the imaging system is in standby mode, circuitry associated with the imaging system such as pixel circuitry may draw a standby leakage current. Verification circuitry may be configured to measure the amount of standby leakage current drawn by associated imaging system circuitry. If the measured level of standby leakage current exceeds a maximum acceptable level of standby leakage current, a warning signal may be generated. Standby leakage current levels on multiple power supply lines may be monitored with associated verification circuitry. | 01-31-2013 |
20130033608 | IMAGE SHARPNESS CLASSIFICATION SYSTEM - A method for predicting whether a test image ( | 02-07-2013 |
20130044222 | IMAGE EXPOSURE USING EXCLUSION REGIONS - Calculating a gain setting for a primary image sensor includes receiving a test-matrix of pixels from a test image sensor, and receiving a first-frame matrix of pixels from a primary image sensor. A gain setting is calculated for the primary image sensor using the first-frame matrix of pixels except those pixels imaging one or more exclusion regions identified from the test matrix of pixels. | 02-21-2013 |
20130044223 | METHOD FOR TESTING AN IMAGE CAPTURING DEVICE - A method for testing an image capturing device with quality parameters includes providing a predetermined criteria for the variations in images and quality parameters corresponding to a specific target-object, capturing a test image corresponding to the same target object by an image capturing device to be tested, and retrieving a standardized image and a test image located at the same position by a standard image unit and a test image unit, respectively, thereby comparing quality parameters of the standard image unit and the test image unit on the same position to accurately detect and determine any abnormity in the image capturing device. | 02-21-2013 |
20130063607 | METHOD IN WHICH CAMERA MODULE TRANSFERS IMAGE DATA AND COMPUTER THEREFOR - A camera system that transfers static image data while reducing power consumption is provided. A static image application issues a frame transfer command at a certain transfer period to a camera module. In each transfer period, the camera module wakes up from a suspend state and generates static image data. After the end of the transfer, the camera module transitions to the suspend state. The camera module is able to transition to the suspend state at each transfer period and thus is able to reduce power consumption. | 03-14-2013 |
20130070107 | System and Method for Measuring Accuracy of Focus - A reliable and repeatable accuracy of focus measurement device to measure the focus accuracy of cameras. The measurement device includes a frame having a substantially planar front face with a focusing target located thereon, and at least one depth-of-field ruler coupled to the frame with a transverse axis falling within a front face plane and a long axis that is angularly adjustable with respect to the front face plane. | 03-21-2013 |
20130070108 | METHOD AND ARRANGEMENT FOR MULTI-CAMERA CALIBRATION - A method for determining calibration data for at least two cameras (camera | 03-21-2013 |
20130076914 | METHOD AND SYSTEM FOR ASSESSMENT OF OPERATOR PERFORMANCE ON AN IMAGING SYSTEM - A method for assessing performance of an operator of an imaging system is provided. The method comprises acquiring operator identification information, and acquiring time taken by the operator for initializing the imaging system for an image acquisition, wherein initializing the imaging system comprises at least one activity, and wherein initializing the imaging system is accomplished before a subject to be imaged is exposed for imaging. | 03-28-2013 |
20130083204 | SELF TEST OF IMAGE SIGNAL CHAIN WHILE RUNNING IN STREAMING MODE - An imager including a self test mode. The imager includes a pixel array for providing multiple pixel output signals via multiple columns; and a test switch for (a) receiving a test signal from a test generator and (b) disconnecting a pixel output signal from a column of the pixel array. The test switch provides the test signal to the column of the pixel array. The test signal includes a test voltage that replaces the pixel output signal. The test signal is digitized by an analog-to digital converter (ADC) and provided to a processor. The processor compares the digitized test signal to an expected pixel output signal. The processor also interpolates the output signal from a corresponding pixel using adjacent pixels, when the test switch disconnects the pixel output signal from the column of the pixel array. | 04-04-2013 |
20130128056 | ESTIMATING SENSOR SENSITIVITY - A method, system, and computer-readable storage medium for determining an estimate of sensor sensitivity associated with an image. A noise level of an image is determined, then an estimate of sensor sensitivity associated with the image is automatically determined, e.g., by a trained classifier based on the determined noise level. Additionally, the sensor sensitivity estimate can be used to determine scene brightness. | 05-23-2013 |
20130155257 | TEST DEVICE FOR TESTING CAMERA MODULE AND METHOD THEREOF - A method for testing a camera module includes: making a lens barrel of the camera module to be aligned with a reference picture with a label; obtaining an image captured by the camera module; analyzing the image and identifying the label, and a first central point of the image; determining coordinates of the label and the first central point to obtain coordinates of an imaged label and a second central point of the image sensor, and calculating an actual distance between the imaged label and the second central point according to them coordinates; obtaining a value of an EFL of the camera module; calculating an angle between a center axis of a lens and a center axis of the image sensor according to the actual distance and the EFL; determining that whether the installation of the camera module satisfies the requirement by comparing the angle with a reference angle. | 06-20-2013 |
20130169823 | IMAGE QUALITY EVALUATION DEVICE, TERMINAL DEVICE, IMAGE QUALITY EVALUATION SYSTEM, IMAGE QUALITY EVALUATION METHOD AND COMPUTER-READABLE RECORDING MEDIUM FOR STORING PROGRAMS - The present invention evaluates the quality of an image shot by a terminal device in a state closer to that seen with the eye. A computer evaluates the quality of an image obtained by shooting a photographic subject including a periodic pattern that fluctuates periodically in one direction. A Fourier transform unit accomplishes a two-dimensional Fourier transform on the image to obtain two-dimensional spatial frequency spectrum components. An analysis unit analyzes the resolution of the image on the basis of spectrum components of spatial frequencies included in the periodic pattern, among the two-dimensional spatial frequency spectrum components obtained by the Fourier transform unit, and analyzes the deterioration of the image on the basis of spectrum components other than these. | 07-04-2013 |
20130169824 | BLUR DETECTION SYSTEM FOR NIGHT SCENE IMAGES | 07-04-2013 |
20130215280 | CAMERA CALIBRATION DEVICE, CAMERA AND CAMERA CALIBRATION METHOD - An object of the present invention is to provide a camera calibration device, enabling a single operation of camera calibration by using a calibration index, a camera and a camera calibration method. A camera calibration device ( | 08-22-2013 |
20130222605 | TESTING AN OPTICAL CHARACTERISTIC OF A CAMERA COMPONENT - A camera module under test is signaled to capture an image of a target. A group of pixels of the image that represent portions of several objects in the target are low pass filtered and then analyzed to compute a pixel distance between different subgroups of pixels that represent portions of the different objects. The computed pixel distance is then converted into a true distance using a predetermined math relationship that relates a pixel distance variable with a true distance variable. | 08-29-2013 |
20130222606 | COMPENSATING FOR VARIATION IN MICROLENS POSITION DURING LIGHT-FIELD IMAGE PROCESSING - Light-field image data is processed in a manner that reduces projection artifacts in the presence of variation in microlens position by calibrating microlens positions. Initially, approximate centers of disks in a light-field image are identified. Gridded calibration is then performed, by fitting lines to disk centers along orthogonal directions, and then fitting a rigid grid to the light-field image. For each grid region, a corresponding disk center is computed by passing values for pixels within that grid region into weighted-center equations. A displacement vector is then generated, based on the distance from the geometric center of the grid region to the computed disk center. For each grid region, the final disk center is computed as the vector sum of the grid region's geometric center and displacement vector. Calibration data, including displacement vectors, is then used in calibrating disk centers for more accurate projection of light-field images. | 08-29-2013 |
20130229530 | SPECTRAL CALIBRATION OF IMAGING DEVICES - Determining, applying and storing model spectral response parameters used to correct colors in a digital image. The model spectral response parameters may be estimated through a recursive error analysis and applied or stored to all digital imaging devices of a particular type, thereby occupying minimal firmware storage space and permitting on the fly correction of images. | 09-05-2013 |
20130229531 | CAMERA BLEMISH DEFECTS DETECTION - A digital image captured by a digital camera module is scaled to a smaller size, and separately horizontal direction filtered and vertical direction filtered using one-dimensional spatial filters. The horizontal direction filtered image and the vertical direction filtered image are combined, wherein edge regions and corner regions of the combined filtered image are created differently than its middle region. The combined filtered image is then thresholded selected pixels of the thresholded image are marked as a blemish region. Other embodiments are also described and claimed. | 09-05-2013 |
20130229532 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM - By a conventional technique, it is not possible to provide an image refocused accurately at a desired subject distance. An image processing device is characterized by including an image data acquiring unit configured to acquire calibration image data obtained by an image capturing device including an aperture to adjust an amount of incident light, a lens array in which a plurality of lenses is arranged, and an image sensing element to photoelectrically convert an image of a subject via the lens array and obtained in a state where the aperture is stopped down in accordance with an instruction of calibration; and a unit configured to acquire a position of an image on the image sensing element corresponding to each of the lenses based on the calibration image data. | 09-05-2013 |
20130235213 | System And Method For Determining The Current Focal Length Of A Zoomable Camera - An accurate camera pose is determined by pairing a first camera with a second camera in proximity to one another, and by developing a known spatial relationship between them. An image from the first camera and an image from the second camera are analyzed to determine corresponding features in both images, and a relative homography is calculated from these corresponding features. A relative parameter, such as a focal length or an extrinsic parameter is used to calculate a first camera's parameter based on a second camera's parameter and the relative homography. | 09-12-2013 |
20130258114 | DIGITAL PROCESSING FOR COMPENSATING SIGNALS EMITTED BY PHOTOSITES OF A COLOUR SENSOR - The present invention relates to the acquisition of colour images by a sensor including a plurality of photosites comprising spectral sensitivities that can to be different between photosites. The invention provides for a digital processing of signals emitted by the photosites, which comprises applying a spatial-chromatic transfer function to said signals, taking into account a variety of spectral sensitivities of the photosites. The sensor can then be devoid of a physical matrix of colour filters. Spectral calibration of the sensor is also provided for this purpose, thus comprising the following steps: obtaining spectral sensitivity data of each photosite (S | 10-03-2013 |
20130258115 | METHOD FOR CALIBRATING A CAMERA - A method calibrates a camera having image sensor having a center position. An image view projected onto the image sensor by a lens is captured. At least one image view boundary of the captured image view is detected. A projection center position corresponding to a center of the projected image view is determined in at least one dimension. Offset between the projection center position and a sensor center position is determined, defined in at least one dimension, corresponding to the center of the image sensor capturing the projected image view. The image sensor is moved in relation to the lens based on the offset in order to arrive at a substantially zero offset in at least one dimension between the center of image sensor and the center of the projected image view. | 10-03-2013 |
20130265442 | CALIBRATION OPERATION DEVICE, CAMERA DEVICE, CAMERA SYSTEM AND CAMERA CALIBRATION METHOD - An object of the present invention is to simplify an operation for calibration of a camera and to shorten a time necessary for the calibration. A camera calibration device | 10-10-2013 |
20130265443 | Nonlinear Self-Calibration for Structure From Motion (SFM) Techniques - A nonlinear self-calibration technique that may, for example, be used to convert a projective reconstruction to metric (Euclidian) reconstruction. The self-calibration technique may use a nonlinear least squares optimization technique to infer the parameters. N input images and a projective reconstruction for each image may be obtained. At least two sets of initial values may be determined for an equation to be optimized according to the nonlinear optimization technique to generate a metric reconstruction for the set of N images. The equation may then be optimized using each set of initial values according to the nonlinear optimization technique. The result with a smaller cost may be selected. The metric reconstruction is output. The output may include, but is not limited to, focal length, rotation, and translation values for the N images. | 10-10-2013 |
20130278779 | AUTOMATIC CALIBRATION - An automatic calibration method for a projector-camera system including a semi-transparent screen is disclosed herein. An image sequence is caused to be captured from the semi-transparent screen and through the semi-transparent screen while a calibration pattern having features is displayed and not displayed in an alternating succession on the semi-transparent screen. A temporal correlation image is created from the image sequence and a discrete binary signal. Peaks are identified in a spatial cross correlation image generated from the temporal correlation image, where a pattern of the identified peaks corresponds to a pattern of the features in the calibration pattern. The peaks are transformed to coordinates of corrected feature points. A comparison of the corrected feature points and a ground truth set of coordinates for the features is used to determine whether the projector-camera system is calibrated. | 10-24-2013 |
20130286219 | Image Calibration System and Image Calibration Method Thereof - An image calibration system and an image calibration method thereof. The image calibration system includes an image capture module capturing a calibration image, first and second calibration tools comprising first and second calibration graphs respectively and a processing module calculating first and second calibration templates in the calibration image based on the first and second calibration graphs, and comparing the calibration image and the first and second calibration templates so as to obtain at least one locating point. | 10-31-2013 |
20130286220 | TEST SYSTEM AND METHOD FOR TESTING MOTHERBOARD OF CAMERA - A test system for a motherboard of a camera includes a storage device, a processor, and a terminal device. The storage device pre-stores image signals. The processor is electronically connected between the storage device and the motherboard, and the terminal device is electronically connected to the motherboard. The terminal device pre-stores a plurality of pictures corresponding to the image signals in the storage device. The processor converts the image signals into test signals. The motherboard restores the test signals into images and transmits the images to the terminal device. The terminal device compares the plurality of pictures with the images, and determines a performance of the motherboard according to the comparison. | 10-31-2013 |
20130286221 | Camera Calibration and Automatic Adjustment of Images - Techniques and apparatus for automatic upright adjustment of digital images. An automatic upright adjustment technique is described that may provide an automated approach for straightening up slanted features in an input image to improve its perceptual quality. This correction may be referred to as upright adjustment. A set of criteria based on human perception may be used in the upright adjustment. A reprojection technique that implements an optimization framework is described that yields an optimal homography for adjustment based on the criteria and adjusts the image according to new camera parameters generated by the optimization. An optimization-based camera calibration technique is described that simultaneously estimates vanishing lines and points as well as camera parameters for an image; the calibration technique may, for example, be used to generate estimates of camera parameters and vanishing points and lines that are input to the reprojection technique. | 10-31-2013 |
20130293726 | Lens Inspection System - A lens testing system may have a test pattern source that generates a test pattern of light. A lens may have a lens surface that reflects the test pattern of light. A digital camera system may capture an image of the reflected test pattern of light. Computing equipment may perform image processing operations to evaluate the captured image of the reflected test pattern. The test pattern may contain a known pattern of test elements such as a rectangular array of spots or test elements of other configurations. During image processing operations, the computing equipment may analyze the reflected version of the spots or other test elements to measure characteristics of the lens such as radius of curvature, whether the lens contains flat regions, pits, or bumps, lens placement in a support structure, and other lens performance data. The computing equipment may compare the measured lens data to predetermined criteria. | 11-07-2013 |
20130300877 | TEST SYSTEM AND METHOD FOR TESTING CAMERA MODULE HAVING VOICE COIL MOTOR - A test system for testing a camera module is provided. The camera module includes a voice coil motor and a lens received in the voice coil motor. The test system includes a first focus activating unit, a second focus activating unit, and a timing unit. The first focus activating unit controls the voice coil motor to drive the lens to move from the initial position to the focusing position for achieving a first time focus and obtains a control signal. The second focus activating unit controls the voice coil motor to drive the lens to replace to the initial position and then move the lens from the initial position to the focusing position again for achieving a second time focus. The timing unit records a first moment when the lens is replaced to the initial position and a second moment when the lens is at the focusing position again. | 11-14-2013 |
20130342706 | CAMERA CALIBRATION APPLICATION - A method and system for camera calibration comprises configuring a calibration target comprising calibration reflectors on a test vehicle. Video of a test scene is collected. Next the test vehicle is identified as it enters the test scene and recorded as it passes through the test scene. The position of the calibration target in each frame of the video is determined and the corresponding individual position of each calibration reflector for each frame of the recorded frames is used to construct a camera calibration map to calibrate the video camera. | 12-26-2013 |
20140002673 | LINE PAIR BASED FULL FIELD SHARPNESS TEST | 01-02-2014 |
20140002674 | Systems and Methods for Manufacturing Camera Modules Using Active Alignment of Lens Stack Arrays and Sensors | 01-02-2014 |
20140002675 | SYSTEMS AND METHODS FOR DETECTING DEFECTIVE CAMERA ARRAYS AND OPTIC ARRAYS | 01-02-2014 |
20140002676 | Lens Mount | 01-02-2014 |
20140015984 | DETECTING AND RESPONDING TO AN OUT-OF-FOCUS CAMERA IN A VIDEO ANALYTICS SYSTEM - Techniques are disclosed for detecting an out-of-focus camera in a video analytics system. In one embodiment, a preprocessor component performs a pyramid image decomposition on a video frame captured by a camera. The preprocessor further determines sharp edge areas, candidate blurry edge areas, and actual blurry edge areas, in each level of the pyramid image decomposition. Based on the sharp edge areas, the candidate blurry edge areas, and actual blurry edge areas, the preprocessor determines a sharpness value and a blurriness value which indicate the overall sharpness and blurriness of the video frame, respectively. Based on the sharpness value and the blurriness value, the preprocessor further determines whether the video frame is out-of-focus and whether to send the video frame to components of a computer vision engine and/or a machine learning engine. | 01-16-2014 |
20140036095 | Method and System for Testing Temporal Latency in Device Having Optical Sensing Component and Touch-Sensitive Display Component - A method and system for determining a camera-to-display latency of an electronic device ( | 02-06-2014 |
20140063265 | Electronic Device Camera Module With Alignment Structures - An electronic device may include a camera module. Control circuitry within the electronic device may use an image sensor within the camera module to acquire digital images. The camera module may have lens structures that are supported by lens support structures such as a lens barrel and lens carrier. An actuator such as a voice coil motor may control the position of the lens support structures relative to internal support structures such as upper and lower spacer members. Springs may be used to couple the lens support structures to the internal support structures. Outer wall structures in the camera module such as a ferromagnetic shield structures may surround and enclose at least some of the internal support structures. The outer wall structures may have openings. The internal support structures may have pins or other alignment structures that protrude through the openings. | 03-06-2014 |
20140063266 | APPARATUS AND METHOD FOR DETERMINING DEFECT PIXEL - Provided is an apparatus of determining a defect pixel which includes at least one of a first edge periphery defect determiner and a second edge periphery defect determiner, wherein the first edge periphery defect determiner is configured to determine if a central pixel of a pixel group is the defect pixel by using pixel values of pixels adjacent to the central pixel disposed close to an image edge, wherein the edge includes at least one of right, left, upper, lower, lower-left, lower-right, upper-left and upper-right pixels of the central pixel, and wherein the second edge periphery defect determiner is configured to determine if the central pixel is the defect pixel by using a pixel disposed at at least one of the lower-left, lower-right, upper-left and upper-right of the central pixel. | 03-06-2014 |
20140078315 | CONFIGURATION OF IMAGE CAPTURING SETTINGS - There is provided a method for configuring a set of image capturing settings of a camera for a first scene condition type currently viewed by the camera. The method comprises detecting the first scene condition type; instructing the camera to acquire a plurality of test images, each test image corresponding to a set of image capturing settings; receiving input relating to a selected test image, and storing the set of image capturing settings corresponding to the selected test image as the configured set of image capturing settings for the first scene condition type to be used by the camera upon future detections of the first scene condition type. | 03-20-2014 |
20140098243 | IMAGE CALIBRATON - A digital image is captured. The captured digital image includes a calibration pattern. The calibration pattern includes displayed information about the calibration pattern. The displayed information is read to obtain calibration information about the captured digital image. A new image is generated. The calibration information is stored with the new image. | 04-10-2014 |
20140104437 | SENSOR CALIBRATION AND POSITION ESTIMATION BASED ON VANISHING POINT DETERMINATION - Disclosed are systems, apparatus, devices, method, computer program products, and other implementations, including a method that includes capturing an image of a scene by an image capturing unit of a device that includes at least one sensor, determining relative device orientation of the device based, at least in part, on determined location of at least one vanishing point in the captured image of the scene, and performing one or more calibration operations for the at least one sensor based, at least in part, on the determined relative device orientation. | 04-17-2014 |
20140104438 | SYSTEMS AND METHODS FOR LENS CHARACTERIZATION - Methods and systems for analyzing camera lenses and presenting information regarding camera lenses performance are described. An interactive user interface is provided over a network for display on a user terminal by a computer system. A user request is received at the computer system from the user terminal for lens data from a first lens. Lens data, including test data obtained via a first digital image captured using the first lens at the first focal length setting and the first aperture setting is accessed from memory and transmitted to interactive user interface. The interactive user interface is configured to display an identification of the first camera body, an identification of the first lens, the first focal length setting used to capture the image, and the first aperture setting used to capture the image. Using the lens test data, the interactive user interface generates and displays sharpness graph data. | 04-17-2014 |
20140146184 | Calibration of Plenoptic Imaging Systems - Calibration for plenoptic imaging systems. The calibration preferably is performed automatically by a processor. In one approach, the processor accesses a plenoptic image captured by the plenoptic imaging system. The plenoptic image is analyzed to determine reference points for superpixels of the plenoptic imaging system, for example the centers of the superpixels. The reference points are used to determine a location of each superpixel relative to the detector array. | 05-29-2014 |
20140146185 | METHOD AND SYSTEM FOR GENERATING REAL-TIME MOTION VIDEO - The present invention relates to a method for generating real-time motion video. The method comprises receiving, at a video processing device, calibration data from a memory in an image sensor unit, the calibration data relating to properties of the image sensor unit. The video processing device receiving real-time raw image data from the image sensor unit via a communication cable and a communication protocol. The video processing device processing the real-time raw image data received from the image sensor unit, where the processing includes adjusting received image data based on at least part of the received calibration data and encoding the image data to a predetermined video format, and outputting the processed image data in real time. | 05-29-2014 |
20140152844 | BLACK LEVEL CALIBRATION METHODS FOR IMAGE SENSORS - A technology is described for calibrating a black level in an image sensor. The technology provides devices, systems and methods for calculating a black level value, where in one aspect, an image data set can be received from an optical black pixel region of an image sensor. A minimum and a mean value can be calculated for the image data set. Thereupon, image thresholding of the image data set can be performed that produces a binary image segmentation of the image data set and a global threshold value can be set to the binary image segmentation that is black. A function can then be performed that determines light corruption in the image data set, and if light corruption is detected, then the image data set can be sorted and a median value can be calculated for a bottom percentage of the sorted image data set and provided as a black level baseline value. | 06-05-2014 |
20140168450 | DATA THROTTLING TO FACILITATE FULL FRAME READOUT OF AN OPTICAL SENSOR FOR WAFER TESTING - Providing for operation of high-speed optical sensor equipment at full data path speeds in conjunction with testing equipment operating at a lower speed is described herein. By way of example, a data stream output from optical sensor equipment to testing equipment can be throttled at a serial interface between such equipment. Throttling can involve subdividing a set of pixel data and outputting a subset of the pixel data in a given readout frame. Consecutive outputs of respective subsets of pixel data are initiated with an offset from the previous readout frame. Accordingly, the optical sensor equipment can be operated at full speeds, simulating realistic operational conditions, while slower testing equipment can be utilized to perform data analytics, heuristics, and other quality tests on various portions of the optical sensor equipment. | 06-19-2014 |
20140184813 | LENS SHADING CALIBRATION FOR CAMERAS - Embodiments of the present invention are directed to methods and systems for performing automatic lens shading correction using module-specific calibrations. According to one aspect of the invention, a method is provided that is performed over three main stages. During a first stage, radial symmetric component data is determined that is common to camera modules of the type to be calibrated. During the second stage, the actual measurement of the shading profile of one or more specific camera modules is performed. In the third and final stage is the extrapolation stage, the base measurement surfaces of a camera module type determined in the first stage are extrapolated and modified with the module-specific Bezier correction surface and calibration data of the second stage. The output surfaces of this third and final stage are used to correct for the shading profile in the camera module, depending on the light-source estimation. | 07-03-2014 |
20140184814 | CALIBRATION REFERENCE PATTERN FOR VEHICLE CAMERA AND SETTING METHOD THEREOF, AND IMAGE CONVERSION METHOD AND DEVICE - An image conversion method is provided. An image of a calibration reference pattern is captured. A plurality of first and a plurality of second characteristic patterns of the calibration reference pattern are identified. Coordinates of the first and second characteristic patterns in a first view angle coordinate system are obtained, and coordinates of the first and second characteristic patterns in a second view angle coordinate system are obtained, to obtain a coordinate conversion relationship between the first and second view angle coordinate systems. An input image is converted to an output image according to the coordinate conversion relationship. | 07-03-2014 |
20140198223 | CAMERA MODULE TESTING DEVICE - A camera module testing device for detecting light leakage in relation to a camera module includes a base, a first fixing plate, a second fixing plate, a movable element, a stepping motor, a sliding table, a support mechanism, a board and a power supply module, and a processing unit. The movable element includes a first movable plate, a second movable plate, and a third movable plate. The support mechanism and the camera module are driven to rotate to various predetermined angles. The stepping motor drives movable element, the support mechanism and the camera module to swing a predetermined number times for each predetermined angle. The lens captures an image each time. The processing unit compares an image captured each time with a predetermined image and analyze if there is a problem of light leakage for the camera module. | 07-17-2014 |
20140204219 | TEST SOCKET FOR CAMERA MODULE - Disclosed herein is a test socket for camera modules, which enables automated inspection of camera modules. The test socket for camera modules includes a base plate provided with a loading unit on which a camera module to be tested is placed; a slider formed on the base plate and horizontally movable thereon; an upper plate formed on the slider to move up or down thereon, and including a cover corresponding to an upper portion of the camera module; a vertical cylinder allowing the upper plate to vertically reciprocate with respect to the slider; and a pin block formed on the loading unit or the cover and connected to a contact point of the camera module. | 07-24-2014 |
20140204220 | SYSTEM AND METHOD FOR DETERMINING AN IMAGING DEVIATION OF A CAMERA - A system is described for determining an imaging deviation of a camera having: the camera, which is focused on a first distance, having a target pattern unit, which is situated at a second distance from the camera in a field of view of the camera and which has a three-dimensional surface texture having calibration markings, having a lens unit which is situated at a third distance from the camera and between the target pattern unit and the camera and is developed so that the three-dimensional surface texture is able to be imaged by the camera, and having a control unit that is connected to the camera and which is developed so that the imaging deviation of the camera is determinable by evaluating an image taken of the calibration markings of the three-dimensional surface texture. Also described is a method for determining an imaging deviation of a camera. | 07-24-2014 |
20140204221 | Imaging Unit, Apparatus Comprising an Imaging Unit, a System, and Methods for Calibrating an Imaging Apparatus Optimization - Improved systems and techniques for calibrating an electronic imaging module are described. An electronic imaging module is subjected to a stimulus and properties of the stimulus are measured. Calibration data associated with the electronic imaging module is stored. The calibration data comprises calibration data indicative of a response of the electronic imaging module to the stimulus, as well as calibration data indicative of the measured properties of the stimulus. | 07-24-2014 |
20140211021 | TEST SYSTEM FOR EVALUATING MOBILE DEVICE AND DRIVING METHOD THEREOF - A test system includes a mobile device including an evaluation application, and a host including a test automation framework (TAF). The host is configured to receive an image corresponding to a screen of the mobile device via the evaluation application and the TAF, display the received image on a screen of the host, scan the received image, and identify a portion of the received image based on a result of scanning the received image. | 07-31-2014 |
20140240518 | ROTATABLE CAMERA MODULE TESTING SYSTEM - An example system for testing camera modules may include: a polygonal structure that is rotatable, where the polygonal structure includes faces, each of which is configured to receive at least one camera module under test; and targets facing at least some of the faces of the polygonal structure, where each target is usable in testing a corresponding camera module facing the each target. | 08-28-2014 |
20140240519 | MATRIX TESTING TARGETS - An example system for testing camera modules includes: a structure for holding camera modules under test, where each of the camera modules includes an image sensor, and where the camera modules are arranged in a same plane on the structure and offset from each other in the plane; and a target for use in testing the camera modules concurrently, where the target includes multiple tiles that are repeated, where each tile contains information for use in testing a camera module, and where the camera modules and the tiles are arranged so that different camera modules face different tiles but see at least some of the same information at the same angle. | 08-28-2014 |
20140240520 | SYSTEM AND METHOD FOR CALIBRATION OF MACHINE VISION CAMERAS ALONG AT LEAST THREE DISCRETE PLANES - This invention provides a system and method for generating camera calibrations for a vision system camera along three discrete planes in a 3D volume space that uses at least two (e.g. parallel) object planes at different known heights. For any third (e.g. parallel) plane of a specified height, the system and method then automatically generates calibration data for the camera by interpolating/extrapolating from the first two calibrations. This alleviates the need to set the calibration object at more than two heights, speeding the calibration process and simplifying the user's calibration setup, and also allowing interpolation/extrapolation to heights that are space-constrained, and not readily accessible by a calibration object. The calibration plate can be calibrated at each height using a full 2D hand-eye calibration, or using a hand-eye calibration at the first height and then at a second height with translation to a known position along the height (e.g. Z) direction. | 08-28-2014 |
20140247366 | IMAGE SENSORS WITH DARK PIXELS FOR REAL-TIME VERIFICATION OF IMAGING SYSTEMS - An imaging system may include an array of image pixels. The array of image pixels may be provided with one or more rows and columns of optically shielded dark image pixels. The dark image pixels may be used to produce verification image data that follows the same pixel-to-output data path of light-receiving pixels. The output signals from dark pixels may be continuously or intermittently compared with a set of expected output signals to verify that the imaging system is functioning properly. In some arrangements, verification image data may include a current frame number that is encoded into the dark pixels. The encoded current frame number may be compared with an expected current frame number. In other arrangements, dark pixels may be configured to have a predetermined pattern of conversion gain levels. The output signals may be compared with a “golden” image or other predetermined set of expected output signals. | 09-04-2014 |
20140253738 | SYSTEM AND METHODS FOR CALIBRATION OF AN ARRAY CAMERA USING A SINGLE CAPTURED IMAGE - Systems and methods for calibrating an array camera are disclosed. Systems and methods for calibrating an array camera in accordance with embodiments of this invention include the capturing of an image of a test pattern with the array camera such that each imaging component in the array camera captures an image of the test pattern. The image of the test pattern captured by a reference imaging component is then used to derive calibration information for the reference component. A corrected image of the test pattern for the reference component is then generated from the calibration information and the image of the test pattern captured by the reference imaging component. The corrected image is then used with the images captured by each of the associate imaging components associated with the reference component to generate calibration information for the associate imaging components. | 09-11-2014 |
20140253739 | CALIBRATION METHOD AND APPARATUS FOR OPTICAL IMAGING LENS SYSTEM WITH DOUBLE OPTICAL PATHS - This invention provides a calibration method and a corresponding apparatus for optical imaging lens system with double optical paths. The apparatus for optical imaging lens system with double optical paths comprises a first optical subsystem, a second optical subsystem and a calibration module. The calibration module receives a first image data from the first optical subsystem and a second image data from the second optical subsystem. The calibration module calibrates the first image data according to at least one selected optical parameter of the second optical subsystem, and calibrates the second image data according to at least one selected optical parameter of the first optical subsystem. The selected optical parameters of the first optical subsystem and the second optical subsystem are different. | 09-11-2014 |
20140267781 | Digital Schlieren Imaging - A Schlieren imaging system can comprise a digital display configured to provide a background for Schlieren imaging, a cutoff filter onto which the background is focused, and a camera configured to image the cutoff filter and the background to facilitate Schlieren imaging. A calibration method for the Schlieren imaging system can comprise forming a pixel image on a digital display, focusing the pixel image on the cutoff filter, imaging the cutoff filter and the pixel image with a camera; and moving the pixel image with respect to the cutoff filter to align the pixel image with respect to the cutoff filter to facilitate Schlieren imaging. Thus, alignment of the Schlieren imaging system can be substantially simplified. | 09-18-2014 |
20140267782 | Apparatus And Method For Automated Self-Training Of White Balance By Electronic Cameras - A method for calibrating auto white balancing in an electronic camera includes (a) obtaining a plurality of color values from a respective plurality of images of real-life scenes captured by the electronic camera under a first illuminant, (b) invoking an assumption about a true color value of at least portions of the real-life scenes, and (c) determining, based upon the difference between the true color value and the average of the color values, a plurality of final auto white balance parameters for a respective plurality of illuminants including the first illuminant. An electronic camera device includes an image sensor for capturing real-life images of real-life scenes, instructions including a partly calibrated auto white balance parameter set and auto white balance self-training instructions, and a processor for processing the real-life images according to the self-training instructions to produce a fully calibrated auto white balance parameter set specific to the electronic camera. | 09-18-2014 |
20140267783 | SYSTEMS AND METHODS FOR SPECIFYING AND FORMULATING CUSTOMIZED TOPICAL AGENTS - Systems and methods for determining a customized cosmetic formulation. In one method, a user is guided to capture an image of a skin region with known lighting and color characteristics, and the image is processed to provide calibrated skin color information. A customized cosmetic formulation is automatically determined for the user based on the calibrated skin color information. In another method, a user is interactively guided through capture of one or more skin region images using a device having an image sensor. The skin region images are processed to provide calibrated skin color information, which is compared to a ground truth data set to identify a set of closest known values in the ground truth data set. A customized cosmetic formulation is automatically determined for the user based on the comparison. | 09-18-2014 |
20140285676 | METHOD AND APPARATUS FOR AUTOMATIC CAMERA CALIBRATION USING ONE OR MORE IMAGES OF A CHECKERBOARD PATTERN - The present invention relates to a high precision method, model and apparatus for calibrating, determining the rotation of the lens scope around its symmetry axis, updating the projection model accordingly, and correcting the image radial distortion in real-time using parallel processing for best image quality. | 09-25-2014 |
20140300752 | Spectral Synthesis for Image Capture Device Processing - A substantially rectangular spectral representation is synthesized, which is adapted to produce image capture device sensor outputs if applied to an image capture device. The synthesized substantially rectangular spectral representation can be utilized in generating output color values of an output color space from image capture device sensor outputs, where the image capture device sensor outputs correspond to an image captured by an image capture device. The generated output color values correspond to colors perceived by the human visual system for the same image as that captured by the image capture device. Image capture device gamut is also determined. | 10-09-2014 |
20140300753 | IMAGING PIPELINE FOR SPECTRO-COLORIMETERS - A spectro-colorimeter system for imaging pipeline is provided, the system including a camera system; a spectrometer system; and a controller coupling the camera system and the spectrometer system. In some embodiments the camera system is configured to provide a color image with the first portion of the incident light. Also, in some embodiments the spectrometer system is configured to provide a tristimulus signal from the second portion of the incident light. Furthermore, in some embodiments the controller is configured to correct the color image from the camera system using the tristimulus signal from the spectrometer. An imaging pipeline method for using a system as above is also provided. Further, a method for color selection in an imaging pipeline calibration is provided. | 10-09-2014 |
20140300754 | SYSTEMS AND METHODS FOR CALIBRATION OF A 360 DEGREE CAMERA SYSTEM - Systems and methods for calibrating a 360 degree camera system include imaging reference strips, analyzing the imaged data to correct for pitch, roll, and yaw of cameras of the 360 degree camera system, and analyzing the image data to correct for zoom and shifting of the cameras. Each of the reference strips may include a bullseye component and a dots component to aid in the analyzing and correcting. | 10-09-2014 |
20140300755 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM - There is provided an information processing device including an acquirer that acquires second data obtained by converting first data constituted by bit data having a first number of bits into symbols having a second number of bits greater than the first number of bits, with respect to each of the bit data, a comparator that compares a first symbol string constituted by a plurality of symbols contained in the second data prior to reverse conversion of the acquired second data into the first data, to a second symbol string representing a code targeted for detection, and a detector that detects the first symbol string as the code targeted for detection from the second data, on the basis of the result of the comparison by the comparator. | 10-09-2014 |
20140307104 | SPECTRAL ESTIMATION METHOD, SYSTEM AND REFERENCE TARGET DESIGN METHOD - A method, system and reference target for estimating spectral data on a selected one of three spectral information types is disclosed. Spectral information types comprise illumination of a scene, spectral sensitivity of an imager imaging the scene and reflectance of a surface in the scene. The method comprises obtaining a ranking order for plural sensor responses produced by the imager, each sensor responses being produced from a reference target in the scene, obtaining, from an alternate source, data on the other two spectral information types, determining a set of constraints, the set including, for each sequential pair combination of sensor responses when taken in said ranking order, a constraint determined in dependence on the ranking and on the other two spectral information types for the respective sensor responses and, in dependence on the ranking order and on the set of constraints, determining said spectral data that optimally satisfies said constraints. | 10-16-2014 |
20140313347 | TRAFFIC CAMERA CALIBRATION UPDATE UTILIZING SCENE ANALYSIS - Methods and systems are disclosed for updating camera geometric calibration utilizing scene analysis. Geometric calibration parameters can be derived with respect to one or more cameras and selected reference points of interest identified from a scene acquired by one or more of such cameras. The camera geometric calibration parameters can be applied to image coordinates of the selected reference points of interest to provide real-world coordinates at a time of initial calibration of the camera(s). A subset of a video stream from the camera(s) can then be analyzed to identify features of a current scene captured by the camera(s) that match the selected reference points of interest and provide a current update of the camera geometric calibration parameters with respect to the current scene. | 10-23-2014 |
20140313348 | CONFIGURATION OF IMAGE CAPTURING SETTINGS - There is provided a method for configuring a set of image capturing settings of a camera for a first scene condition type currently viewed by the camera. The method comprises detecting the first scene condition type; instructing the camera to acquire a plurality of test images, each test image corresponding to a set of image capturing settings; receiving input relating to a selected test image, and storing the set of image capturing settings corresponding to the selected test image as the configured set of image capturing settings for the first scene condition type to be used by the camera upon future detections of the first scene condition type. | 10-23-2014 |
20140313349 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - An image processing device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, acquiring an image that includes a marker that includes a plurality of first color regions and a plurality of second color regions, of which a color is different from a color of the first color regions, the plurality of first color regions being opposed to each other and the plurality of second color regions being opposed to each other; extracting the first color regions or the second color regions from the image; reducing the first color regions or the second color regions until a first degree of similarity between a shape of the first color regions or the second color regions, the first color regions or the second color regions being extracted, and a predetermined elliptical shape satisfies a predetermined first threshold value. | 10-23-2014 |
20140320672 | Method and Apparatus for Measuring Flange Back Focus and Calibrating Track Length Scales of Photographic Objective Lenses - The illuminated object is brought to focus by a microscope objective lens in a focal plane. This image acts as the object for the lens under test. The position of the focal plane is adjusted by moving the object generator/viewing stage in the form of an autocollimator with a split beam eyepiece until it is coincident with the infinity focal plane of the lens under test. When this condition has been achieved, light transmitted by the test lens will be collimated. This collimated beam is reflected by a plane mirror and re-enters the test lens to be imaged in the focal plane and provide a well-focussed image as viewed by through the eyepiece. This image is also available for analysis using photoelectric techniques. | 10-30-2014 |
20140333778 | AUTOMATED BORESCOPE MEASUREMENT TIP ACCURACY TEST - Measurement accuracy of a remote visual inspection (RVI) system is tested using a test object including a test feature having a known geometric characteristic. Using a controller, attachment of a detachable measurement optical tip to an RVI probe is detected. A user is then prompted to perform testing of the measurement accuracy. When the user indicates the test feature is visible, the system captures one or more images of the test feature, determines coordinates of the test feature from the images, and measures a geometric characteristic of the test feature using the coordinates. An accuracy result is determined using the measured geometric characteristic and the known geometric characteristic, and an indication is provided, e.g., to the user, of the result of the comparison. An RVI system with a user-prompt device is also described. | 11-13-2014 |
20140333779 | APPARATUS FOR DISTRIBUTING BUS TRAFFIC OF MULTIPLE CAMERA INPUTS OF AUTOMOTIVE SYSTEM ON CHIP AND AUTOMOTIVE SYSTEM ON CHIP USING THE SAME - An apparatus for distributing the bus traffic of the multiple camera inputs of an automotive system on chip (SoC) and an automotive SoC using the apparatus are disclosed. The plurality of camera data caches stores data from the plurality of cameras in corresponding internal buffers, measures the data storage status of the buffers, and transmits the data to memory. The bus monitor analyzes a bus signal, and then outputs a signal capable of allowing the plurality of camera data caches to transmit the data via the bus based on the results of the analysis. The master arbiter determines the priorities of use of the bus of the camera data caches, and provides the right to use the bus to the plurality of camera data caches based on the priorities of use of the bus. | 11-13-2014 |
20140340528 | IMAGING APPARATUS AND METHOD OF CONTROLLING THE SAME - An imaging apparatus includes an image sensor having a plurality of light receivers that receive light, a detector to detect a monitoring voltage which corresponds to a difference between a dark voltage corresponding to dark current generated from at least one of the plurality of light receivers and a predetermined reset voltage, and a controller to reset the image sensor if the monitoring voltage detected by the detector becomes lower than a threshold voltage. Accordingly, the imaging apparatus can perform divided exposure promptly and accurately to minimize the problem occurring due to dark current. | 11-20-2014 |
20140347498 | SELF TEST OF IMAGE SIGNAL CHAIN WHILE RUNNING IN STREAMING MODE - An imager including a self test mode. The imager includes a pixel array for providing multiple pixel output signals via multiple columns; and a test switch for (a) receiving a test signal from a test generator and (b) disconnecting a pixel output signal from a column of the pixel array. The test switch provides the test signal to the column of the pixel array. The test signal includes a test voltage that replaces the pixel output signal. The test signal is digitized by an analog-to digital converter (ADC) and provided to a processor. The processor compares the digitized test signal to an expected pixel output signal. The processor also interpolates the output signal from a corresponding pixel using adjacent pixels, when the test switch disconnects the pixel output signal from the column of the pixel array. | 11-27-2014 |
20140354828 | SYSTEM AND METHOD FOR PROCESSING MULTICAMERA ARRAY IMAGES - A system for calibrating multi-camera array images, comprising an array of at least four acquisition devices, configured to acquire images; at least one reference acquisition device configured to acquire at least one reference image at least partially overlapping at least four of the images; and a processor configured to extract tie points between the at least four of the images and the at least one reference image and utilize the tie points for calibrating the at least four of the images in respect of the at least one reference image. | 12-04-2014 |
20140368666 | ELECTRONIC COMPONENTS MATRIX OF ENHANCED RELIABILITY AND METHOD FOR LOCATING A FAULT IN THE MATRIX - Enhancement of the reliability of an imaging device comprising several pixels is provided, each of the pixels comprising several first blocks of electronic components organized as a matrix and joined by links to row buses and column buses of the matrix allowing the powering and control of each of the first blocks for its nominal operation. Each of the pixels moreover comprises, associated with the first block, programmable means for disconnection of the first block from the at least one of the buses. Locating of a fault in a device is also provided, the fault occurring in one of the first blocks and leading to a generalized fault in several first blocks. | 12-18-2014 |
20140368667 | APPARATUS, SYSTEM, AND METHOD FOR N-PHASE DATA MAPPING - Apparatus, methods, and systems are herein described for providing a method for calibrating a channel by employing a training sequence during at least one blanking interval. In one embodiment, an apparatus includes a first control logic to send a command to generate a predetermined data pattern during at least one blanking interval. In addition, the apparatus includes a second control logic to determine whether a received data pattern matches the predetermined data pattern. | 12-18-2014 |
20140368668 | FAILURE-DETERMINATION APPARATUS - A failure-determination apparatus is provided with: a radar device ( | 12-18-2014 |
20140375822 | INTRA-OPERATIVE QUALITY MONITORING OF TRACKING SYSTEMS - An interventional system employing an interventional tool ( | 12-25-2014 |
20150009341 | FAILSAFE IMAGE SENSOR WITH REAL TIME INTEGRITY CHECKING OF PIXEL ANALOG PATHS AND DIGITAL DATA PATHS - A method of testing analog and digital paths of a pixel in a row of an imager, includes the following steps: (a) injecting first and second charges into the analog path of the pixel, wherein the first charge is in response to a light exposure, and the second charge is in response to a built-in test; (b) sampling the first and second charges to form an image signal level and a test signal level, respectively; and (c) converting, by an analog-to-digital converter (ADC), the image signal level and the lest signal level to form image data end test data, respectively. The method then validates the image data based on the test data. | 01-08-2015 |
20150015721 | CAMERA DEVICE AND FLASH LIGHT CONTROL METHOD - A camera device is provided. The camera device includes a flash unit, an image capture module, and a controller. The flash unit generates a preset flash with a predetermined Correlated Color Temperature value to illuminate an object, and the image capture module captures a test image from the object when the preset flash illuminates the object. The controller determines an adjusted CCT value according to a color difference between the test image and a predetermined color. When the controller has determined the adjusted CCT value, the flash unit generates an adjusted flash with the adjusted CCT value to illuminate the object. When the adjusted flash illuminates the object, the image capture module captures an adjusted image. | 01-15-2015 |
20150022669 | REAL-TIME REGISTRATION OF A STEREO DEPTH CAMERA ARRAY - Real-time registration of a camera array in an image capture device may be implemented in the field by adjusting a selected subset of independent parameters in a mapping function, termed registration coefficients, which have been determined to have the largest contribution to registration errors so that the array can be maintained in its initial factory-optimized calibrated state. By having to adjust only a relatively small subset of registration coefficients from within a larger set of coefficients (which are typically determined using a specialized calibration target in a factory setting), far fewer matching patterns need to be identified in respective images captured by cameras in the array in order to correct for registration errors. Such simplified pattern matching may be performed using images that are captured during normal camera array usage so that registration may be performed in real-time in the field without the need for specialized calibration targets. | 01-22-2015 |
20150022670 | Noise Compensation in a Biometric Sensing Device - An electronic device includes a biometric sensing device connected to a processing channel that includes at least one amplifier having a gain. One or more processing devices is operatively connected to the biometric sensing device and adapted to compensate for signal fixed pattern noise in signals received from the processing channel. The signal fixed pattern noise can include signal measurement variation noise and gain variation noise. The biometric sensing device captures a new image or data, and at least one processing device compensates for the signal fixed pattern noise in the newly captured image or data. | 01-22-2015 |
20150029345 | CAMERA CALIBRATION DEVICE, CAMERA CALIBRATION METHOD, AND CAMERA CALIBRATION PROGRAM - There is provided a camera calibration device capable of highly precisely and easily estimating camera parameters without installing a piece of special calibration equipment or measuring 3D coordinates of reference points employed for calibration. A normal vector acquisition means | 01-29-2015 |
20150035991 | METHOD FOR DYNAMICALLY CALIBRATING ROTATION OFFSET IN A CAMERA SYSTEM - A method for dynamically calibrating rotational offset in a device includes obtaining an image captured by a camera of the device. Orientation information of the device at the time of image capture may be associated with the image. Pixel data of the image may be analyzed to determine an image orientation angle for the image. A device orientation angle may be determined from the orientation information. A rotational offset, based on the image orientation angle and the device orientation angle, may be determined. The rotational offset is relative to the camera or orientation sensor. A rotational bias may be determined from statistical analysis of numerous rotational offsets from numerous respective images. In some embodiments, various thresholds and predetermined ranges may be used to exclude some rotational offsets from the statistical analysis or to discontinue processing for that image. | 02-05-2015 |
20150035992 | System and Methods for Calibration of an Array Camera - Systems and methods for calibrating an array camera are disclosed. Systems and methods for calibrating an array camera in accordance with embodiments of this invention include the capturing of an image of a test pattern with the array camera such that each imaging component in the array camera captures an image of the test pattern. The image of the test pattern captured by a reference imaging component is then used to derive calibration information for the reference component. A corrected image of the test pattern for the reference component is then generated from the calibration information and the image of the test pattern captured by the reference imaging component. The corrected image is then used with the images captured by each of the associate imaging components associated with the reference component to generate calibration information for the associate imaging components. | 02-05-2015 |
20150054966 | IMAGING DEVICE USING PIXEL ARRAY TO SENSE AMBIENT LIGHT LEVEL & METHODS - Imaging devices and methods detect ambient light level using array pixels. In one embodiment, an imaging device includes an array of imaging pixels that are configured to acquire an image, and an array of dark pixels. A controller may cause at least one of the imaging pixels and of the dark pixels to image concurrently. A monitoring circuit may measure a difference between currents drawn by the imaging pixel and the dark pixel during the concurrent imaging. An indication of ambient light level can be generated according to the difference. The indication can be used as desired, for example to manage the brightness of the display screen. As such, no separate sensors are required, apart from the imaging array that is already provided for imaging. | 02-26-2015 |
20150062351 | Device and Method for Calibrating a Temporal Contrast Sensor with a Frame-Based Camera Sensor - A device and method incorporates features of a temporal contrast sensor with a camera sensor in an imager. The method includes registering the camera sensor with the temporal contrast sensor as a function of a calibration target. The method includes receiving camera sensor data from the camera sensor and temporal contrast sensor data from the temporal contrast sensor. The method includes generating a plurality of images as a function of incorporating the temporal contrast sensor data with the camera sensor data. | 03-05-2015 |
20150062352 | METHOD FOR TRANSMITTING CONTENTS AND ELECTRONIC DEVICE THEREOF - A method of operating an electronic device is provided. The method includes receiving, by an electronic device, an input relating to data to be transmitted, monitoring a state of the electronic device, determining whether to transmit the data on a basis of at least part of a result of the monitoring, and transmitting the data according to a result of the determining. | 03-05-2015 |
20150070510 | COLOR MEASUREMENT AND CALIBRATION - Embodiments described herein disclose a color measurement device and method for use with cameras or other imaging devices. The color measurement device may be configured to determine many different colors via a commonly owned device. Embodiments utilize sinusoidal grayscale rings to determine an exact color match of an unknown color, even if there is perspective distortion of an obtained image. | 03-12-2015 |
20150085141 | Method And Apparatus For Calibrating Multi-Spectral Sampling System - A method and an apparatus for calibrating a multi-spectral sampling system are provided. The method includes: sampling scene information of a scene to obtain a two-path multi-spectral image comprising a multi-spectral image consisting of a plurality of sampling points and a RGB color image; calibrating a spectrum of each of the plurality of sampling points to obtain a spatial location thereof and a spectral wavelength corresponding to the spatial location; providing two scanning videos in different scanning directions, demonstrating and shooting the two scanning videos to obtain two two-path multi-spectral videos, in which each two-path multi-spectral video comprises a multi-spectral video and a RGB color video; and based on the spatial location of each of the plurality of sampling points, obtaining a matching point of each of the plurality of sampling points, so as to implement a spatial location calibration of the multi-spectral sampling system. | 03-26-2015 |
20150085142 | IMAGING DATA CORRECTION SYSTEM AND METHOD - Methods and systems for use in calibrating imaging data, are provided that include using a calibration array to generate a test pattern. The calibration array can emit a test pattern having geometric, temporal, and electromagnetic characteristics. The collected data can be compared with the geometric, temporal and electromagnetic characteristics to determine an error factor that can then be used in analyzing the collected data. | 03-26-2015 |
20150097969 | Methods and Systems for Lens Shading Correction - A method for calibrating an image capture device, comprises the steps of: applying lighting levels onto the image capture device; capturing luma values for the applied lighting levels; calculating luma gains for lens coordinates as a function of the applied lighting levels and the captured luma values, wherein each of the lens coordinates having multiple ones of the calculated luma gains; and storing the calculated luma gains to calibrate the image capture device. | 04-09-2015 |
20150103187 | Method and System for Adjusting Performance of Video Camera for Thermal Control - A system and method for adjusting operating parameters of a video camera in response to detected temperatures uses temperature sensors that detect temperatures of the components within the video camera and an external temperature for an area surrounding the video camera. These temperatures are combined to determine an operating temperature of the video camera. Then, operating parameters of the video camera are adjusted to ensure that the operating temperature of the video camera does not create an over-temperature condition. | 04-16-2015 |
20150109461 | AUTOMATED TESTING OF MEDIA DEVICES - A device testing capability is presented herein. The device testing capability supports automated testing of media devices (e.g., cameras, microphones, speakers, or the like) for verifying that the media devices are functioning properly. The device testing capability may support automated verification by an endpoint that one or more media devices or one or more sets of media devices associated with endpoint are functioning properly. For example, the device testing capability may support automated verification by a computer that a camera associated with the computer is functioning properly. For example, the device testing capability may support automated verification by a computer that a speaker and a microphone that are associated with the computer are functioning properly. The device testing capability may support automated verification, by a management system, of the proper functioning of media devices associated with endpoints in a set of endpoints. | 04-23-2015 |
20150116506 | NOISE SIMULATION FLOW FOR LOW NOISE CMOS IMAGE SENSOR DESIGN - A method for noise simulation of a CMOS image sensor comprises performing a frequency domain noise simulation for a readout circuit of the CMOS image sensor using a computer, wherein the readout circuit includes a correlated double sampling (CDS) circuit, wherein the frequency domain noise simulation includes a CDS transfer function to refer a noise introduced by the CDS circuit back to an input node of the readout circuit. The method further comprises calculating noise at the input node of the readout circuit based on the referred back noises caused by one or more components in the readout circuit and estimating noise of the CMOS imaging sensor by comparing the calculated noise at the input node of the readout circuit to an original input signal to the readout circuit of the CMOS imaging sensor. | 04-30-2015 |
20150146014 | IMAGING SYSTEMS AND METHODS FOR LOCATION-SPECIFIC IMAGE FLARE MITIGATION - An imaging system may include a camera module with an image sensor having an array of image sensor pixels and one or more lenses that focus light onto the array. The system may include processing circuitry configured to mitigate flare artifacts in image data captured using the array based on at least one image flare map. The image flare map may identify a portion of the captured image data on which to perform image flare mitigation operations. The processing circuitry may perform image flare mitigation operations such as pixel value desaturation on the identified portion of the captured image data without desaturating portions of the image data that do not include flare artifacts. The flare map may be generated using a calibration system that characterizes the location, intensity, and color of all possible image flare artifacts that may be generated by the imaging system during normal imaging operations. | 05-28-2015 |
20150146015 | COLLABORATIVE SIGHTING - Collaborative sighting is performed using plural optical sighting apparatuses that each comprise: a camera unit and a display device. Geometric calibration of the camera units with respect to the imaged scene is performed by detecting features within captured images, generating descriptors from respective patches of the image at the features; detecting corresponding descriptors from different images, Position and deriving the geometric calibration from the positions in the respective images of the corresponding descriptors. A target location in the image captured by a first optical sighting apparatus is designated and a corresponding location relative to the image captured by the second one optical sighting apparatus is identified from the geometric calibration. The display device of the second optical sighting apparatus indicates where the corresponding location lies relative to the displayed image. | 05-28-2015 |
20150146016 | Camera Test Apparatus - A camera testing apparatus includes a frame assembly, a control unit, and a plurality of first light sources and second light sources coupled to the frame assembly and in communication with the control unit. Each of the first and second light sources is in one of an illuminated first state or a non-illuminated second state, and each of the plurality of first and second light sources is adapted to be within a field of vision of a camera disposed remote from the first and second light sources. The control unit sends a first command to each of the first light sources to change a first operational parameter. The control unit sends a second command to a first one of the second light sources to illuminate at a first brightness and a third command to a second one of the second light sources to illuminate at a second brightness. | 05-28-2015 |
20150300652 | SYSTEMS AND METHODS FOR COOKWARE DETECTION - Systems and methods for cookware detection are provided. One example system includes a vision sensor positioned so as to collect imagery depicting a cooktop. The system includes one or more processors and one or more non-transitory computer-readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations. The operations include obtaining a frame of imagery depicting the cooktop and using a classifier to classify the frame of imagery as either depicting cookware or not depicting cookware. When the frame is classified as depicting cookware, the operations include performing one or more operations in response to the detected cookware | 10-22-2015 |
20150304527 | LENS DISTORTION CORRECTION METHOD - The present disclosure illustrates a lens distortion correction method to solve influence for distortion correction caused by an alignment error between a lens center and a center of image sensor unit during assembling. The present disclosure is characterized in that the spatial geometric calibration is incorporated with the lens distortion correction and different image centers are selected repeatedly when transformation relationship of image coordinates id used to perform the lens distortion correction, so as to correct the image center of the image to be corrected and enhance the accuracy of lens distortion correction. | 10-22-2015 |
20150304651 | METHOD OF DETECTING TILT OF IMAGE CAPTURING DIRECTION AND APPARATUS OF DETECTING TILT OF IMAGE CAPTURING DIRECTION - An image processing device includes an acquisition unit, an extraction unit, and a detection unit. The acquisition unit acquires image data for each of frame numbers from a drive recorder or the like. The extraction unit extracts a plurality of straight lines from the image data on the basis of drive recorder information. The detection unit detects a tilt of an image capturing direction of a camera according to a magnitude of an angle between a vertical axis direction of the image data and the extracted plurality of lines. | 10-22-2015 |
20150304653 | MAPPING ELECTRICAL CROSSTALK IN PIXELATED SENSOR ARRAYS - The effects of inter pixel capacitance in a pixilated array may be measured by first resetting all pixels in the array to a first voltage, where a first image is read out, followed by resetting only a subset of pixels in the array to a second voltage, where a second image is read out, where the difference in the first and second images provide information about the inter pixel capacitance. Other embodiments are described and claimed. | 10-22-2015 |
20150324986 | IMAGING DATA CORRECTION SYSTEM AND METHOD - Methods and systems for use in calibrating imaging data, are provided that include using a calibration array to generate a test pattern. The calibration array can emit a test pattern having geometric, temporal, and electromagnetic characteristics. The collected data can be compared with the geometric, temporal and electromagnetic characteristics to determine an error factor that can then be used in analyzing the collected data. | 11-12-2015 |
20150326852 | Systems and Methods for Detecting Defective Camera Arrays and Optic Arrays - Systems and methods for detecting defective camera arrays, optic arrays and/or sensors are described. One embodiment includes capturing image data using a camera array; dividing the captured images into a plurality of corresponding image regions; identifying the presence of localized defects in any of the cameras by evaluating the image regions in the captured images; and detecting a defective camera array using the image processing system when the number of localized defects in a specific set of image regions exceeds a predetermined threshold, where the specific set of image regions is formed by: a common corresponding image region from at least a subset of the captured images; and any additional image region in a given image that contains at least one pixel located within a predetermined maximum parallax shift distance along an epipolar line from a pixel within said common corresponding image region within the given image. | 11-12-2015 |
20150341629 | AUTOMATIC CALIBRATION OF EXTRINSIC AND INTRINSIC CAMERA PARAMETERS FOR SURROUND-VIEW CAMERA SYSTEM - A method of calibrating multiple vehicle-based image capture devices of a vehicle. An image is captured by at least one image capture device. A reference object is identified in the captured image. The reference object has known world coordinates. Known features of the vehicle are extracted in the captured image. A relative location and orientation of the vehicle in world coordinates is determined relative to the reference object. Each of the multiple image capture devices is calibrated utilizing intrinsic and extrinsic parameters of the at least one image capture device as a function of the relative location and orientation of the vehicle in world coordinates. | 11-26-2015 |
20150350638 | IMAGERS WITH ERROR GENERATION CAPABILITIES - A system may include a camera module having error generation circuitry, and processing circuitry that processes image data from the camera module. The processing circuitry may include error detection circuitry that monitors or otherwise processes the image data to verify correct operation of the camera module. To test for correct operation of the error detection circuitry, the processing circuitry may provide a control signal to the camera module that enables error generation and selects a type of fault for the error generation circuitry to emulate. In response to receiving the control signal, the error generation circuitry may emulate the fault at the camera module to produce faulty image data. The error generation circuitry may emulate the fault by modifying control signals at the camera module or modifying the digital image data stream produced by the camera module. | 12-03-2015 |
20150350639 | SYSTEMS AND METHODS FOR PROVIDING MONITORING STATE-BASED SELECTABLE BUTTONS TO NON-DESTRUCTIVE TESTING DEVICES - A system includes a portable non-destructive testing (NDT) device. The NDT device includes a processor configured to receive imaging data captured via a sensor of the NDT device, cause a display of the NDT device to display an image to be analyzed based on the imaging data, and cause the display to display a graphical user interface (GUI). The GUI includes a first plurality of user-selectable objects. Each of the first plurality of user-selectable objects is configured to activate one or more monitoring functions of the NDT device. The processor is also configured to cause the display to display at least a first set of the first plurality of user-selectable objects. The first set of the first plurality of user-selectable objects is configured to substantially overlay the image. The first set of the first plurality of user-selectable objects is displayed based at least in part on an inspection state of the NDT device. | 12-03-2015 |
20150381976 | SYSTEMS AND METHODS FOR LENS CHARACTERIZATION - Methods and systems for analyzing camera lenses and presenting information regarding camera lenses performance are described. An interactive user interface is provided over a network for display on a user terminal by a computer system. A user request is received at the computer system from the user terminal for lens data from a first lens. Lens data, including test data obtained via a first digital image captured using the first lens at the first focal length setting and the first aperture setting is accessed from memory and transmitted to interactive user interface. The interactive user interface is configured to display an identification of the first camera body, an identification of the first lens, the first focal length setting used to capture the image, and the first aperture setting used to capture the image. Using the lens test data, the interactive user interface generates and displays sharpness graph data. | 12-31-2015 |
20160007017 | CALIBRATION DEVICE, IMAGING DEVICE, CALIBRATION METHOD, AND METHOD FOR MANUFACTURING IMAGING DEVICE - In order to provide a calibration device and the like suitable for image stabilization, a calibration device ( | 01-07-2016 |
20160007018 | FAILURE DETECTION APPARATUS AND FAILURE DETECTION PROGRAM - In a failure detecting apparatus, acquiring unit acquires a plurality of images captured by a plurality of imaging devices in which exposures thereof are capable of being individually controlled. The plurality of images including an overlapped region that represents a region where images are overlapped. The region extracting unit extracts a plurality of overlapped regions from the plurality of images acquired by the acquiring unit. The feature extracting unit extracts features of image from the plurality of overlapped regions extracted by the region extracting unit. Further, the comparing unit compares the features of image between the plurality of overlapped regions and the similarity determining unit determines whether or not the features of image are similar based on a result of comparing by the comparing unit. The failure determining unit determines a failure in the imaging device when the similarity determining unit determines the features of image are not similar. | 01-07-2016 |
20160007019 | LENS APPARATUS AND METHOD OF CONTROLLING OPERATION OF SAME - Notification is given of the fact that a television camera lens has developed a malfunction. An extender lens includes an imaging lens having a 1× magnification and an imaging lens having a 2× magnification. For each of these imaging lenses, a master lens is adjusted in such a manner that the light-receiving surface of an image sensor will be brought to an in-focus position. The master lens adjustment processing is executed periodically and data indicating a history of amounts of adjustment of the master lens is stored in memory per imaging lens. Data indicating the history of amounts of adjustment of the master lens is read from the memory. Whether the television camera lens is malfunctioning is detected from the read data indicating the history. If a malfunction is detected, an error LED emits light to notify of the malfunction. | 01-07-2016 |
20160014404 | METHOD AND SYSTEM FOR AUTOMATIC FOCUS WITH SELF-CALIBRATION | 01-14-2016 |
20160014405 | METHOD AND APPARATUS FOR CALIBRATING A CAMERA | 01-14-2016 |
20160065956 | OPTICAL NON-UNIFORMITY CORRECTION (NUC) FOR ACTIVE MODE IMAGING SENSORS - Optical non-uniformity correction (NUC) of an active mode image sensor scans a spot over a portion of the sensor's FOV within a frame time so that the net response of the sensor is approximately uniform. Scanning the laser spot simultaneously performs the NUC and provides the illumination of the FOV for imaging the scene. The laser spot is suitably scanned in an overlapping geometrical pattern relative to a line-of-sight of the sensor's imager while modulating a spacing between overlapping laser spots, the size of the spot, a dwell time of the laser spot or the energy of the laser spot or combinations thereof as a function of the scan position of the laser spot so that the laser illumination is inversely proportional to the imager response at the scan position of the laser spot. A liquid crystal waveguide may be used to form and scan the small laser spot over the FOV within the frame time. | 03-03-2016 |
20160073101 | MULTI-TARGET CAMERA CALIBRATION - Techniques for calibration of image capturing devices are described herein. The techniques include capturing one or more images at a first target, capturing one or more images at a second target, capturing one or more images at a third target, capturing one or more images at a fourth target, and calibrating a multi-camera system based on the captured images. | 03-10-2016 |
20160073102 | CAMERA CALIBRATION - Techniques for image calibration are described herein. The techniques may include detecting features on a set of images, describing features on the set of images, determining a match between features of the image sets, determining a shift on the matched features based on camera positions associated with the matched features, determining a first homography between the camera positions and the determined shift, and determining a second homography based on a re-projection of three-dimensional features back to the cameras | 03-10-2016 |
20160073103 | REMOTE DIAGNOSTIC DEVICE FOR COMPUTER-CONTROLLED APPARATUS - A remote diagnostic device for a computer-controlled apparatus is provided with a camera configured to pick up an image on a display screen of the computer-controlled apparatus, a diagnostic computer installed in a remote place, and a signal conversion adapter. The signal conversion adapter transmits the image picked up by the camera to the diagnostic computer through a network communication line, automatically identifies an actuator of the computer-controlled apparatus, and converts a remote control signal received from the diagnostic computer into an input/output signal for the actuator and outputs the signal to the computer-controlled apparatus. | 03-10-2016 |
20160100160 | BLURRY IMAGE DETECTING METHOD AND RELATED CAMERA AND IMAGE PROCESSING SYSTEM - A blurry image detecting method and related camera and image processing system are provided. The blurry image detecting method includes capturing an image stream, comparing a first gradient magnitude difference between the (N−M)th image and the Nth image with a threshold, calculating a first accumulative quantity of the images with the first gradient magnitude difference greater than the threshold, and determining the Nth image is the blurry image according to a comparison result of the first gradient magnitude difference and a calculation result of the first accumulative quantity. Numeral “N” and numeral “M” respectively are positive integers, and numeral “N” is greater than numeral “M”. | 04-07-2016 |
20160104284 | POST-MANUFACTURE CAMERA CALIBRATION - Some embodiments include a method of operating a calibration server for a camera module. The method can include: receiving, by the computing server, a first training image taken by the camera module in a mobile device and a corresponding image-context attribute from the mobile device; aggregating, by the computing device, the first training image into a set of contextually similar images based on the image-context attribute; computing a calibration parameter model based on the set of contextually similar images utilizing dimension reduction statistical analysis; and scheduling to update the calibration parameter model to configure an image processor to adjust a raw photograph of the camera module according to the calibration parameter model. | 04-14-2016 |
20160112701 | VIDEO PROCESSING METHOD, DEVICE AND SYSTEM - The present disclosure discloses a video processing method, device and system. The method includes: calibrating a video camera equipment using a gyroscope based on a Rodrigues' Rotation Matrix to obtain a calibration parameter; obtaining first video information and first gyroscope rotation information, wherein the first gyroscope rotation information is corresponding to the first video information; performing at least one step of: stabilizing the first video information according to the calibration parameter and the first gyroscope rotation information; and removing rolling shutter effect from the first video information according to the calibration parameter and the first gyroscope rotation information. | 04-21-2016 |
20160119617 | FAULT DETECTION AND METHOD OF DETECTING FAULTS IN DIGITAL IMAGING SYSTEMS - A method of analyzing a digital camera includes generating first image data using an image sensor in the camera. A first analysis is performed on at least one portion of the first image data. Second image data is generated using the image sensor and a second analysis is performed on the at least one portion of the second image data. The results of the first analysis are compared to the results of the second analysis. A signal indicating a fault with the digital camera is generated in response to the first analysis differing from the second analysis by a predetermined amount. | 04-28-2016 |
20160147131 | Multiple Camera Apparatus and Method for Synchronized Autofocus - A disclosed apparatus includes a plurality of camera units. Control logic, operatively coupled to each camera unit, is operative to perform a parallax operation using at least two image frames from at least two camera units to determine a common focus distance, subsequent to completing independent auto-focus operations and respective lens position adjustments for the at least two camera units. The control logic provides a control signal to at least one of the camera units to adjust its actuator to adjust lens position in response to the determined common focus distance. A test procedure is used to map focus distance to lens position for each camera unit and to generate a lookup table. The control logic uses the lookup table unique to each camera unit to adjust the lens settings according to the determined common focus distance. The parallax operation is iterated until the common focus distance converges. | 05-26-2016 |
20160165101 | Lens Dirtiness Detection Apparatus and Lens Dirtiness Detection Method - It is possible to consider an image as a composite wave that is the result of layering waves having differing periods and amplitudes. An image captured via a lens having a water droplet attached thereto has a higher occurrence of changes such as image blur than an image that does not have a water droplet attached thereto, which means that this type of change in an image results in changes in the composite wave thereof as well. Provided is a lens dirtiness detection device that suitably determines whether a lens is dirty without being affected by a background image by: focusing on the occurrence of large changes in the composite wave of an image that accompany an increase in the dirtiness of a camera lens; extracting each of the image frequency components that constitute the composite wave; and analyzing changes in the magnitude relation between the frequency components. | 06-09-2016 |
20160165225 | VIDEO STREAMING AND VIDEO TELEPHONY UPLINK PERFORMANCE ANALYSIS SYSTEM - The technology disclosed relates to scoring user experience of video frames displayed on a mobile or other video display device. In particular, it relates to capture alignment and test stimulus isolation techniques that compensate for artifacts in the capture mechanism. The technology disclosed includes methods and systems for analyzing both downlink and uplink quality for mobile or other video display device cameras capturing and transmitting video frames including teleconference video display. Particular aspects of the technology disclosed are described in the claims, specification and drawings. | 06-09-2016 |
20160171697 | METHOD AND SYSTEM OF RUN-TIME SELF-CALIBRATING LENS SHADING CORRECTION | 06-16-2016 |
20160173868 | Methods, Systems, and Apparatus for Camera Testing Using Virtual Images | 06-16-2016 |
20160173869 | Multi-Camera System Consisting Of Variably Calibrated Cameras | 06-16-2016 |
20160180511 | UPDATING CALIBRATION OF A THREE-DIMENSIONAL MEASUREMENT SYSTEM | 06-23-2016 |
20160182804 | Lens Mount | 06-23-2016 |
20160182874 | Multiple Camera Apparatus and Method for Synchronized Auto White Balance | 06-23-2016 |
20160182903 | CAMERA CALIBRATION | 06-23-2016 |
20160189379 | IMAGE CALIBRATING METHOD FOR STITCHING IMAGES AND RELATED CAMERA AND IMAGE PROCESSING SYSTEM WITH IMAGE CALIBRATING FUNCTION - An image calibrating method for stitching images includes calculating contrast values of a plurality of images, and comparing the contrast values to set the image with maximal contrast value as a reference image; others of the plurality of images are set as target images. The image calibrating method further includes calculating cumulative distribution functions of the reference image and the target images respectively, and obtaining a transform function according to the cumulative distribution functions of the reference image and the target images for pixel adjustment of the target images. Further, a camera with an image calibrating function and a related image processing system are disclosed in the present invention. | 06-30-2016 |
20160205394 | Object Space Calibration of Plenoptic Imaging Systems | 07-14-2016 |
20160252424 | CHARACTERIZATION AND EVALUATION OF OPTICAL ELEMENTS UNDER VIBRATIONAL LOADING | 09-01-2016 |
20160255341 | CHARACTERIZATION AND EVALUATION OF OPTICAL ELEMENTS UNDER VIBRATIONAL LOADING | 09-01-2016 |
20160381355 | Camera Testing Using Virtual Images - An apparatus includes a virtual image generation device, a receptacle for a digital camera, and a light booth. The virtual image generation device is configured to generate a plurality of test images within the light booth in accordance with a test sequence. The receptacle is configured to enable detection of the test images by the digital camera. | 12-29-2016 |
20190147625 | SYSTEM AND METHODS FOR EXTRINSIC CALIBRATION OF CAMERAS AND DIFFRACTIVE OPTICAL ELEMENTS | 05-16-2019 |
20190149758 | PIXEL CONTROL SIGNAL VERIFICATION IN A STACKED IMAGE SENSOR | 05-16-2019 |
20190149813 | METHOD AND APPARATUS FOR CAMERA FAULT DETECTION AND RECOVERY | 05-16-2019 |
20190149814 | CALIBRATION JIG | 05-16-2019 |