| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 358300260 | Distortion control in image reproduction (e.g., removing, reducing or preventing image artifacts) | 82 |
| 20080247001 | IMAGE PROCESSING SYSTEM AND IMAGE PROCESSING METHOD - An image processing system comprising: an image acquisition unit for acquiring a scanned image; a non-voltage storage medium that stores correction information corresponding to a known object having a three-dimensional shape defined by the standard; when an object of the scanned image is the known object, a correction unit that corrects a shadow area of the scanned image corresponding to a shadow resulting from thickness of the known object, on the basis of the correction information. | 10-09-2008 |
| 20090009812 | Distortion Compensation for Printing - A printing machine includes a substrate and at least one printhead with at least two material deposition channels which are movable with respect to the substrate, wherein the printhead is mounted on a stage which allows rotation of the printhead around an axis perpendicular to the substrate and translation in a direction perpendicular to the print direction, and wherein during each print swath, the rotation angle and translation values of the printhead are varied in order to change the pitch and the lateral position in the direction perpendicular to the print direction of material deposited from the different deposition channels; and an algorithm which computes the required rotation angles and translation values for a given pattern of substrate distortion. | 01-08-2009 |
| 20090015873 | COPY APPARATUS HAVING A COPY PREVENTION FUNCTION AND A COPY PREVENTION METHOD THEREOF - A copy apparatus having a copy prevention function. The copy apparatus includes a scan unit to scan an image, a pattern detection unit to detect patterns corresponding to pre-stored copy prevention patterns from among patterns in the scanned image, and a control unit to prevent the image from being printed if a ratio of the detected patterns is identical to a ratio of the copy prevention patterns. Accordingly, even though money which has been enlarged or reduced in size is copied, the money is not copied due to the location ratio of the patterns in the image. | 01-15-2009 |
| 20090046325 | METHOD AND SYSTEM TO COMPENSATE FOR BANDING DEFECTS - A method of correcting periodic banding defects in a printing system is provided. The method comprises: determining a banding profile estimate; determining a compensation profile; adjusting the compensation profile based on the transfer function of a motion system and the transfer function of a printing system; waiting until a defect once-around signal returns; and applying the output of the adjustment step to a controller controlling the speed of an imaging surface. | 02-19-2009 |
| 20090091797 | Catadioptric Imaging System - A catadioptric imaging system combines a rectifying mirror, a lens system and subsequent image processing. This approach can produce a small form factor desktop document imaging system capable of producing high-quality, high-resolution images of paper documents. | 04-09-2009 |
| 20090103142 | Method and apparatus for reducing aliasing artifacts in scans of screen printed originals - Method and apparatus of reducing aliasing when scanning a screen printed document including removing high frequency image information at the input of an image sensor prior to scanning. Removing high frequency image information increases the effective sampling frequency of the scanner thereby reducing the effects of aliasing by. Removal of high frequency image information is achieved by adjusting the focal position of the image sensor from a focused position to a defocused position using a mechanism for moving the image sensor or scan bar relative to either the scan bed or a document to be scanned. | 04-23-2009 |
| 20090141312 | SCANNING APPARATUS AND IMAGE CORRECTING METHOD THEREOF - A scanning apparatus which scans an image of a document to generate an image data, the scanning apparatus includes: a boundary sensing unit to sense a boundary of the image, and a distortion area, a distortion boundary of which is not sensed; a shadow calculating unit to calculate a shadow value of the image data; and a control unit to calculate the distortion boundary of the distortion area according the shadow values of the distortion area so as to correct distortion of an image caused by variations in focal distances between the image and the lenses within the scanning apparatus. | 06-04-2009 |
| 20090244635 | IMAGE PROCESSING DEVICES AND COMPUTER PROGRAM PRODUCTS FOR PROCESSING IMAGE DATA - An image processing device includes an image quality determining unit that determines whether data of an original image meets a particular criterion of a particular image quality category, a thumbnail list image data generating unit that generates image data of a thumbnail list, and a mark adding unit that adds particular indicator mark image data to the thumbnail list image data when it is determined that the original image data does not meet the particular criterion. The particular indicator mark image data corresponds to a particular indicator mark positioned in the thumbnail list at a position corresponding to the thumbnail of the original image. The particular indicator mark indicates a result of the determination made by the image quality determining unit. An output unit outputs the thumbnail list based on the thumbnail list image data. | 10-01-2009 |
| 20090244636 | Systems and method for optical scatter imaging of latent image plates - Computer-implemented systems and methods for processing image data of a process-free plate are provided according to the present disclosure. The systems and methods may, generally, include a data acquisition step/means for receiving image data using one or more channels of a imaging system, each channel functioning to image the same target region of a process-free plate using a different wavelength of light, and a data processing step/means for filtering the image data using at least one of: (i) self-filtering, (ii) Fourier shrinkage and (iii) Wavelet shrinkage. When the image data is received using a plurality of channels, the received image data may advantageously be combined so as to optimize contrast-to-noise performance. The disclosed systems and methods may advantageously perform the operations of image de-noising, contrast enhancement, and thresholding, and may further involve compensation techniques, e.g., for minimizing distortion and blurring effects. | 10-01-2009 |
| 20090273813 | METHOD OF CORRECTING STREAKS USING EXPOSURE MODULATION AND SPATIALLY VARYING TRCS - Systems and methods are provided for compensating for streak defects in images formed by an image forming device, such as a digital printer. The systems and methods include using both modulation of a raster output scanner (ROS actuation) and spatially varying tone reproduction curve (STRC actuation) in a common control system for improving streak correction. Low spatial frequency large amplitude streak defects are corrected using ROS actuation and high spatial frequency streak defects, as well as any residual low frequency defects, are corrected using STRC actuation. | 11-05-2009 |
| 20090296158 | SYSTEM AND METHOD TO COMPENSATE STREAKS USING A SPATIALLY VARYING PRINTER MODEL AND RUN TIME UPDATES - Systems and methods are provided for compensating for streak defects in images formed by an image forming device, such as a digital printer. The methods include using a spatially varying printer model and run time updates to generate spatially varying tone reproduction curves (STRC actuation) in an iterative control system for improving streak correction in a digital printing machine. Streaks are rapidly learned and eliminated at cycle-up and tracked and eliminated during print run time using STRC actuation. | 12-03-2009 |
| 20090296159 | control system for suppressing black in images - A computerized system, method, and software apparatus is presented which reduces the black level of the printing process in order to substantially remove stray black dots from the finished product of a printing output. Black levels are reduced by updating the print engine regions for the colors W, C, M, Y, MY, CM, CY, and neutral and by assigning a weights each color. The values are used to compute CMKY values. These values are then placed in a gain matrix and stored in a computer memory. | 12-03-2009 |
| 20090296160 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit, image formation control section, counter, image formation condition regulation section, controlled printed-paper number storage section, and regulation control section. The image forming unit includes a plurality of functional sections. The counter counts a cumulative printed-paper number in a series of image formation processing. The image formation condition regulation section regulates an image formation condition of at least one of the functional sections. The controlled printed-paper number storage section stores a benchmark printed-paper number and first allowable value to determine the timing of regulating the image creation condition. The first allowable value is set to be less than the benchmark printed-paper number. The regulation control section activates the image creation condition regulation section after the series of image formation processing when the cumulative printed-paper number is equal to or greater than the first allowable value after the series of image formation processing. | 12-03-2009 |
| 20100027076 | SEMI AUTOMATIC PUNCH HOLE REMOVAL - Systems and methods are described that facilitate removing punch hole artifacts in electronic document images. When a document with punch holes is scanned, the punch holes appear as unwanted dark spots in the margin. To remove these artifacts, a blanking regions having background color pixels are placed over the punch hole artifacts and the electronic document image is stored with the blanking regions in place. A user interface is provided to permit a user to enter blanking region parameters, including x,y coordinates, diameter, reference edge from which the coordinates are measured, etc. Default settings can be stored and recalled for common punch hole patterns, which may vary between offices and the like. | 02-04-2010 |
| 20100060940 | METHOD, COMPUTER PROGRAM AND PRINT SYSTEM FOR TRAPPING PRINT DATA - In a method or system for trapping print data with a plurality of respective objects, the objects being individually transferred into a bit map pixel file, at least one overfill is determined for the respective object relative to color regions bordering the respective object in the pixel file according to predetermined trapping rules. The object and the at least one overfill are inserted into the pixel file, wherein the object and the overfill are rastered in the pixel file upon insertion. | 03-11-2010 |
| 20100067061 | IMAGE READING APPARATUS AND IMAGE READING METHOD - An image acquiring unit reads an original and outputs whole image data of the original including a vertical streak portion corresponding to a location of a foreign material on a read surface of the reading unit. A storing unit stores therein the image data output from the image acquiring unit. A dividing unit defines an edge portion of the image data and divides the image data into vertical-streak-correction subject data and image portion data. A vertical-streak correcting unit performs a correction process on the vertical-streak-correction subject data to compensate a degradation in image quality due to the foreign material. | 03-18-2010 |
| 20100079819 | PRINTER AND PRINT METHOD - A printer includes a print unit which prints an image on a recording medium by adhering recording material based on image data; a storage unit which stores a value corresponding to a reference recording material density; a reference density acquisition unit which acquires from the image data a reference recording material density of an area within the image; a specifying unit which specifies a value corresponding to the acquired reference recording material density by referring to the storage unit; a detection unit which detects a recording material density in the area of the printed image; a determination unit which determines whether the detected recording material density in the area is within a range determined based on the specified value; and a controller which indicates a print failure and/or stops printing if the determination unit determines that the detected recording material density detected is outside of the range. | 04-01-2010 |
| 20100079820 | COLOR IMAGE FORMING APPARATUS - A color image forming apparatus of a so-called tandem type which has image forming units in correspondence with colors is provided. In the color image forming apparatus, a color discrepancy amount storage unit stores information of a color discrepancy amount of each of the image forming units, which is measured in advance. A first color discrepancy correcting unit performs color discrepancy correction in a pixel unit by performing coordinate conversion of bitmap data to be printed based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. A second color discrepancy correcting unit performs color discrepancy correction in less than a pixel unit by performing tone correction of the bitmap data corrected by the first color discrepancy correcting unit based on the information of the color discrepancy amount stored in the color discrepancy amount storage unit. | 04-01-2010 |
| 20100091334 | DIGITAL COMPENSATION METHOD AND APPARATUS - A digital image processing method. The method includes printing a first set of reference marks on one side of a substrate with a first print engine; printing a second set of reference marks on the same side of the substrate as the first set of reference marks with a second print engine; sensing both sets of reference marks on the substrate with an image sensing unit and generating a digital image of the reference marks; performing image analysis on the digital image to obtain an image-to-image distortion map where the image-to-image distortion map is a local measure of difference between the first set of reference marks and the second set of reference marks; and generating a compensated customer image by using the image-to-image distortion map to reduce registration errors when using the first and second print engines. | 04-15-2010 |
| 20100091335 | METHOD AND SYSTEM FOR ACTIVE DECREASE OF GHOST APPEARANCE - A system and method to compensate for ghost appearances on a print due to a previous job, the method comprising defining areas in which ghosting is expected or detected and recording the image on a photoreceptor by selectively changing the parameters of the system as a function of position, to compensate for the effects of ghosting in ex-image and ex-nonimage areas. | 04-15-2010 |
| 20100103469 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF - A 2-pixel averaging unit ( | 04-29-2010 |
| 20100128317 | METHODS, SYSTEMS AND APPARATUS TO COMPENSATE FOR DISTORTIONS CAUSED BY FUSING - This disclosure provides printing methods, systems and apparatus to compensate for distortions by fusing toner applied to a media substrate. According to one exemplary method, image data is processed according to media characterization data for a toner density value associated with the image. The processed image data compensates for media substrate distortions due to fusing of a printed image on the media substrate. | 05-27-2010 |
| 20100128318 | MEASURING COLOR ON A MOVING SUBSTRATE - An image processing apparatus for use with a printed image on a moving substrate is provided. The image processing apparatus includes a first imaging device configured to process spatial data which indicates a position of color patches printed along an edge portion of the printed image on the moving substrate. The image processing apparatus further includes a second imaging device configured to process at least one of densitometric data and colorimetric data of the color patches of the printed image. The first imaging device and second imaging device acquire image data from substantially the same position on the substrate at substantially the same time. The image processing apparatus further includes a processor configured to monitor a color of the printed image on the moving substrate based on the spatial data and the at least one of densitometric data and colorimetric data. | 05-27-2010 |
| 20100128319 | METHOD FOR EXPOSING A PRINTING FORM AND CORRESPONDING COMPUTER PROGRAM PRODUCT - A method for exposing a printing form includes the following steps: A matrix having device-dependent image information is provided on a computer for supplying data to a printing form exposer. The matrix having device-dependent image information is transformed in a matrix manipulation device into a corrected matrix having device-dependent image information. A printing form is exposed in the printing form exposer with the image information in accordance with the corrected matrix. Here, a first part of the transformation rule for producing the corrected matrix in a first zone of the matrix is defined as a function of the area coverage of the first zone, and a second part of the transformation rule for producing the corrected matrix in a second zone of the matrix, which is different from the first zone, is defined as a function of the area coverage of the second zone, the area coverage in the first zone and the area coverage in the second zone being different from each other. | 05-27-2010 |
| 20100134847 | PRINTING DEVICE CAPABLE OF PRINTING IMAGE OF IMAGE FILE - In order to correct image files to be printed in a printing device, there is provided a printing device including: an inputting unit that is configured to be capable of inputting an image file representing a motion image; a generating unit that is configured to extract a plurality of frame images from the image file and to generate a first output image in which the plurality of extracted frame images are laid out on a single page; correcting unit that is configured to correct the first output image and to generate a first corrected output image; and a printing unit that is configured to be capable of printing the first corrected output image. | 06-03-2010 |
| 20100157375 | IMAGE FORMING APPARATUS - The image forming apparatus includes first and second reading portions which read images of first and second faces of an original, an image forming portion which forms an image on a sheet based on image data read by the reading portions, a calculation portion which calculates difference between respective image data, a correction portion which calculates correction data to decrease difference of the image data based on the image data difference, and a control portion which controls the image forming portion so that an image for correction to correct the reading accuracy difference is formed on a sheet based on the correction data; and the calculation portion calculates difference between respective image data when the image for correction formed on a sheet is respectively read by the first and second reading portions, and the correction portion recalculates correction data based on the image data difference calculated by the calculation portion. | 06-24-2010 |
| 20100195164 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus that includes a latent image carrier on which a latent image is formed, an exposure head that has a first imaging optical system, first light emitting elements that emit light to be imaged by the first imaging optical system, a second imaging optical system, and second light emitting elements that emit light to be imaged by the second imaging optical system and which form the latent image on the latent image carrier at a position adjacent to the first light emitting elements in a first direction, an image processor that has an input unit to which image data are input, and a data giving unit that gives correction data to correct positional slippage of the latent image formed on the latent image carrier to the input image data. | 08-05-2010 |
| 20100208304 | IMAGE CORRECTION METHOD AND IMAGE CORRECTION SYSTEM - A patch is printed on a printing medium, and ink discharge amount information is acquired from a colorimetric value that is acquired by measuring a printed patch. According to the information, color correction is performed on image data to be processed for printing, using a correction table that corresponds to a designated type of printing media. | 08-19-2010 |
| 20100220363 | STREAK COMPENSATION USING MODEL BASED PROJECTIONS FOR RUN TIME UPDATES - Streak compensation in a digital printer is provided utilizing a spatially varying Printer Model and Run Time updates to generate Spatially Varying Tone Reproduction Curves (STRCs) which are used as actuators to compensate for streaks during run time. A full width array sensor is used to measure streak profiles and the STRCs are used as actuators to compensate for streaks. Streak profile measurements taken at a limited number of area coverage levels combined with a Printer Streaks Basis Function Model are used to estimate and project the streak behavior at all area coverage levels and at all inboard-to-outboard spatial locations. The projection is then used in a pixel-wise error feedback control scheme to drive each profile to a desired shape, thereby compensating for streaks. | 09-02-2010 |
| 20100225974 | LITHOGRAPHIC PRINTING SYSTEM WITH PLACEMENT CORRECTIONS - The technology disclosed relates to methods and devices that compensate for displacements in a pattern or deformations of a workpiece. In particular, this relates to using timing to compensate for displacements along a first axis along the scanning direction while using resampling, interpolation or a similar method to compensate for displacements along a second axis that is substantially orthogonal to the first axis. The scanning direction may be an actual direction of movement of the scanning head or it may be a direction perpendicular to an orientation of an image projected onto a workpiece. | 09-09-2010 |
| 20100231979 | IMAGE READING DEVICE, IMAGE READING METHOD, AND IMAGE FORMING APPARATUS - A reference-signal generating unit generates a reference signal for generating a driving signal to drive each unit of the image reading device. A frequency modulating unit modulates frequency of the reference signal, thereby generating a frequency-modulated reference signal. A driving-signal generating unit generates the driving signal from the frequency-modulated reference signal. A photoelectric converting unit converts an incident light into an analog image signal using the driving signal. An AD converting unit converts the analog image signal into a digital image signal. A correcting unit corrects the digital image signal by generating a correction signal for eliminating a noise superimposed on the digital image signal using the frequency-modulated reference signal and adding the correction signal to the digital image signal. | 09-16-2010 |
| 20100245927 | TONE DEPENDENT GREEN-NOISE ERROR DIFFUSION METHOD AND PRINTING DEVICE THEREOF - A tone dependent green-noise error diffusion method includes setting a first threshold and a second threshold, and determining a two-level value of a color level of an input image according to the first threshold and the second threshold; subtracting the two-level value from the color level value to generate an error value; performing an error diffusion on the error value to generate an error diffusion accumulation value; adjusting the color level according to the error diffusion accumulation value; performing a hysteresis filtering on the two-level value to generate an output dependent feedback value; and adjusting the color level according to the output dependent feedback value. | 09-30-2010 |
| 20100253981 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND COMPUTER PROGRAM PRODUCT - An image forming apparatus includes a skew correcting unit that performs skew correction by dividing an input image that has undergone a halftone process into image data in a predetermined skew correction area in a main scanning direction and by shifting the image data in the skew correction area in a sub-scanning direction; an edge detecting unit that detects whether a pixel at a division position is an edge pixel based on concentrations of a set of pixels including the pixel at the division position; a correction area determining unit that, if detected that the pixel at the division position is the edge pixel, determines a correction area that is an area of pixels including the edge pixel to be subjected to concentration correction within the skew correction area; and an edge correcting unit that corrects concentrations of the pixels within the correction area. | 10-07-2010 |
| 20100253982 | DISCHARGE DEFECT DETECTING METHOD AND DISCHARGE DEFECT DETECTING DEVICE - A discharge defect detecting device including a sensor that reads image, which has been formed on a medium by moving nozzles relative to the medium in a relative movement direction and discharging a fluid, at a reading resolution lower than the resolution of an image data in the relative movement direction, based on the image data; a standard data forming unit that forms a standard data having the same resolution as the reading resolution in the relative movement direction, based on the image data; and a detecting unit that compares a plurality of the reading data pixels on the same row in the relative movement direction in the data read by the sensor with a plurality of standard data pixels each corresponding to the plurality of the reading data pixels in the standard data, to detect the discharge defects of the nozzles. | 10-07-2010 |
| 20100271666 | IMAGE DISPLAY DEVICE AND IMAGE FORMING APPARATUS - An image display device is provided with a storage for storing an image, a display for displaying a preview of the image, a security setting receiving unit for receiving setting as to whether or not the preview of the image is to be displayed with security, an image processing unit for applying an image quality degradation process to the image for which the security setting receiving unit received the setting for displaying the preview of the image with security, and a preview display controlling unit for causing the image having the image quality degradation process applied by the image processing unit to be displayed at the time of the preview display of the image for which the setting for the security display was received. | 10-28-2010 |
| 20100309526 | REDUCING IOP REGISTRATION ERROR IN A DIGITAL DOCUMENT SYSTEM - What is disclosed is a novel method for reducing errors in IOP registration of a digital document system. In one embodiment, a number of digital pages (10, for example) are received in the image path. For each of a process and lateral direction of a first side of each digital image, a total amount of IOP registration error to be corrected is determined. A portion of the total IOP registration error is estimated that is separable error. Each of the estimated separable errors are subtracted from the total IOP registration error to obtain an amount of non-separable error in each respective direction. The non-separable error values are averaged to obtain an error value for each direction per-side. The error values are compensated for in their respective directions per-side by adjustments to the device in an amount which is equal in magnitude and in an opposite direction to the error. | 12-09-2010 |
| 20100315685 | APPARATUS THAT PERFORMS CALIBRATION FOR MAINTAINING IMAGE QUALITY - To add an arbitrary recording medium as a recording medium that can be used for calibration to maintain the quality of an image to be formed, an image forming unit forms a pattern image on each of a specific recording medium that can be used for the calibration and the arbitrary recording medium. A creating unit creates second conversion setting information applied to the arbitrary recording medium to convert luminance information into density information, using first luminance information obtained from the pattern image formed on the specific recording medium, second luminance information obtained from the pattern image formed on the arbitrary recording medium, and first conversion setting information applied to the specific recording medium for converting luminance information into density information. A determining unit determines a common image formation condition applied to the specific recording medium and the arbitrary recording medium based on the second conversion setting information. | 12-16-2010 |
| 20110019237 | APPARATUS AND METHOD FOR FORMING IMAGE FOR PRINTING - An image forming apparatus comprises a image reader unit and a controller. The controller is configured to i) execute a detection operation of calculating a correction coefficient based on reference image data obtained by applying the light from a light source to a reference unit and receiving, by a photoelectric conversion unit, the reflected light from the reference unit to perform photoelectric conversion of the received light to the reference image data, ii) correct image density variations of the image data caused by orientation variations of the light source and pixel sensitivity of the photoelectric conversion unit based on the correction coefficient, iii) form an output image to be printed on output paper in accordance with an arrangement manner, based on the corrected image data, and iv) determine an interval at which the detection operation is executed, in accordance with a characteristic of the light source and the arrangement manner. | 01-27-2011 |
| 20110043864 | DEBLURRING AND SUPERVISED ADAPTIVE THRESHOLDING FOR PRINT-AND-SCAN DOCUMENT IMAGE EVALUATION - A method is described to obtain a binary image from the print-and-scan process to best match the known original. A point-spread function (PSF) of the PAS process is first obtained from its knife-edge responses, and deblurring is carried out on the scanned images using deconvolution. After image deskewing and preliminary registration, a supervised adaptive thresholding procedure is utilized to binarize the scanned image such that a measure of difference (e.g. the Euclidean distance) between the original and binarized images is minimized. The supervised adaptive thresholding procedure divides the scanned images into many rectangular sub-images. Otsu's method is used to find a starting threshold for each scanned sub-image. An optimal threshold is found around the Otsu's threshold via iterative search to minimize the measure of difference between the original sub-image and scanned sub-image. The sub-images are binarized using the optimal threshold. This method may be used in document authentication. | 02-24-2011 |
| 20110080616 | Automatic Red-Eye Object Classification In Digital Photographic Images - Automatic red-eye object classification in digital photographic images. In a first example embodiment, a method for classifying a candidate red-eye object in a digital photographic image includes several acts. First, a candidate red-eye object in a digital photographic image is selected. Next, RGB pixels of the candidate red-eye object are converted into YUV pixels. Then, the YUV pixels satisfying a constraint that is a function of the YUV pixels are summed. Next, the sum is determined to be greater than or equal to a scaled version of the total number of YUV pixels in the candidate red-eye object. Finally, the candidate red-eye object is transformed into a true red-eye object. | 04-07-2011 |
| 20110080617 | IMAGE FORMING APPARATUS AND COMPUTER READABLE MEDIUM - According to an aspect of the invention, an image forming apparatus includes an image correction unit and a determination unit. The image correction unit inserts a new pixel between pixels forming image data with a plurality of pixels printed using a plurality of print color materials arranged in a main scanning direction in order to correct the image width in the main scanning direction. The determination unit determines whether or not the image data is specified for print with a dot representing given information superposed. When the determination unit determines that the image data is specified for print with the dot superposed, a prohibition unit included in the image correction unit prohibits insertion of the new pixel into a pixel string of a print color material of a similar color to the print color material for the dot. | 04-07-2011 |
| 20110090539 | IMAGE CORRECTION METHOD, APPARATUS, ARTICLE AND IMAGE - An image correction method able to avoid error image. According to opposite properties of black and white, only the last few bits of the scanned digital signal are extracted for black correction, while only the first few bits of the scanned digital signal are extracted for white correction. Further, the most significant bit of the digital signal is 1 for white correction. Therefore, the unwanted LBB effect on the scanned image caused by dust or spots on the correction document is avoided. In addition, as only a few bits of the scanned digital signal are extracted, the requirement in memory capacity is reduced. | 04-21-2011 |
| 20110096366 | IMAGE PROCESSING APPARATUS, CONTROL METHOD AND STORAGE MEDIUM - An image processing apparatus which performs processing of applying blur processing to divided image data, and compositing divided images having undergone the blur processing, the apparatus comprises an out of image boundary estimation unit which estimates a pixel out of an image boundary of image data for each of first image data subjected to the blur processing and second image data neighboring the first image data among the divided image data; and a blurring image generation unit which generates blurring image data for the first image data by performing the blur processing using a filter for the first image data while referring to the first image data, the second image data, and an estimation pixel estimated by the out of image boundary estimation unit. | 04-28-2011 |
| 20110102850 | MOVEMENT DETECTION APPARATUS AND RECORDING APPARATUS - When at least one of first image data and second image data is captured, according to a moving speed of an object while an image sensor is capturing an image, exposure time for capturing the image is controlled to decrease a difference between object blur widths in a direction in which the object moves. | 05-05-2011 |
| 20110102851 | METHOD, DEVICE AND COMPUTER PROGRAM TO CORRECT A REGISTRATION ERROR IN A PRINTING PROCESS THAT IS DUE TO DEFORMATION OF THE RECORDING MEDIUM - In a method to correct a registration error in a printing process, data of first and second images to be printed are subjected to a raster image process via which at least first and second raster graphics are generated. Control data for a print member or two respective print members are formed from the first and the second raster graphics. A recording medium is printed in a first printing process with the control data of the first image. The recording medium is subjected to a treatment via which the recording medium and the first image deform along at least one deformation axis. The recording medium is printed by the print member with the control data of the second image in a second printing process. To avoid a registration error between the first and second printed images, the control data of the respective raster graphic of at least one of the first and the second print images as a source image are processed along an image processing axis of the respective raster graphic that corresponds to the deformation axis, and wherein respective source pixels to be used for the respective raster graphic are selected stochastically from the source image in a direction transverse to the image processing axis. | 05-05-2011 |
| 20110116139 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - Directional data representing a pattern which indicates a growing direction of a dot on a scanning line is generated. Coefficients used to distribute the image data of a pixel of interest are set. An edge of an input image is detected. The image data of the interest pixel of the input image is distributed to the interest pixel and a pixel adjacent to the interest pixel based on the coefficients. Image data distributed from the adjacent pixel is added to image data of the interest pixel on which the distribution is performed, and the sum of the image data is as corrected image data of the interest pixel. The corrected image data and the generated directional data are selected for an edge, and the image data of the interest pixel and input directional data are selected for a non-edge to generate an image signal pulse-width modulated. | 05-19-2011 |
| 20110170143 | Method and apparatus for controlling color registration sensors - A method and apparatus for controlling registration sensors are provided, in which a transfer unit transfers an electrostatic latent image onto a printing medium, at least one registration sensor senses image alignment errors by irradiating light to the transfer unit to sense reflected light, a sensor data storage unit stores characteristics data of the respective registration sensors, and a sensor control unit controls the registration sensors based on the characteristics data of the respective registration sensors, wherein the registration sensors are placed into the transfer unit. Accordingly, time for performing an algorithm of color registration can be reduced, and registration can be achieved correctly in a short time, irrespective of a set frame of the image forming apparatus. | 07-14-2011 |
| 20110194151 | IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD AND COMPUTER READABLE MEDIUM - An image processing apparatus includes a binarization section, a determination section and an area setting section. The binarization section binarizes a given image. The determination section determines whether or not a pixel to be determined is effective in accordance with the number of pixels of one value of a binary value in each of determination areas. Each of the determination areas are placed so as not to contain the pixel to be determined in the binarized image and so as not to overlap in a predetermined direction of the pixel to be determined. The area setting section sets an area including the pixel determined effective in the determination section. | 08-11-2011 |
| 20110216373 | IMAGE FORMING APPARATUS, AND METHOD FOR PRODUCING PRINTED MATTER - An image forming apparatus for printing an original image indicated based on image data is provided. The image forming apparatus includes a paper feed portion that conveys, to a print position, paper having a size in a feed direction larger than a size of the original image, a region selection portion that selects, as an additional image, a band-shaped region that has a predetermined width and extends inwardly from an edge of the original image in a direction corresponding to the feed direction of the paper, and an image correction portion that adds the additional image repeatedly in such a manner that the additional image is placed adjacent to each other paper. | 09-08-2011 |
| 20110228341 | IMAGE QUALITY PERFORMANCE FOR A COLOR MARKING DEVICE - What is disclosed is a novel system and method for determining printer performance in terms of image quality defects over a large complex set of conditions based on measurements taken over a small simple set of conditions, thus reducing the amount of time, effort, and wasted paper required to obtain the data. The present system and method effectively utilizes a predictive model that predicts noise measurements of multi-separations from those of single-separation colors and/or a subset of the multi-separations. Because a model is used to comprehend color performance over the entire gamut, the number of patches is reduced. This reduction enables the method to be used within a machine to dynamically characterize the device's image quality performance. Various embodiments have been disclosed. | 09-22-2011 |
| 20110228342 | Methods and Systems for Estimation of Document Skew in an Image - Aspects of the present invention are related to systems and methods for determining a skew angle associated with a document image. According to a first aspect of the present invention, a rotation vector may be estimated for at least one layer in a vertical-edge buffer and a horizontal-edge buffer. According to a second aspect of the present invention, a rotation vector may be estimated directly from the vertical-edge buffer and the horizontal-edge buffer using a fixed-sized, progressively constrained histogram. | 09-22-2011 |
| 20110249299 | PRESERVING USER APPLIED MARKINGS MADE TO A HARDCOPY ORIGINAL DOCUMENT - What is disclosed is a novel system and method for identifying and removing print defects from an original document such that user markings applied to the hardcopy originally can be more readily identified and extracted. In one embodiment, an image of an original document and a marked document are received. The original document was printed using a print device which caused a print defect in the hardcopy print. Methods for identifying the print defect in the difference image are provided herein. The identified print defect is removed from the difference image. The difference image retains the user-applied markings once the print defects have been identified and removed. The user markings can then be provided to a storage device for subsequent retrieval and added into the image of the original document to generate an image of a new marked document containing the user markings without the defect. Various embodiments are disclosed. | 10-13-2011 |
| 20110249300 | IMAGE PROCESSING SYSTEM, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD - An image processing system includes: an image input unit which reads an image printed on a medium and generates electronic data representing the image; and a processing unit which corrects the image represented by the electronic data. The processing unit implements the functions of: detecting, from the image represented by the electronic data, a first pattern having a first size and shape that is attached to the image; measuring a degree of degradation by measuring an amount of displacement of the size of the detected first pattern from the first size; and correcting the image represented by the electronic data to reduce the degree of degradation. | 10-13-2011 |
| 20110261413 | IMAGE FORMING APPARATUS - There is provided an image forming apparatus including a print head adapted to form an image on a recording medium, a transport path for the recording medium, the transport path being provided on at least one of a feed side and a discharge side of the recording medium with respect to the print head, an image reading device provided on the transport path, the image reading device being adapted to read an image formed by the print head, a correction chart provided opposite the image reading device with the transport path interposed therebetween, the correction chart being adapted to correct a reading result of the image reading device, and a distance adjustment device adapted to increase or decrease the distance between the correction chart and the image reading device. | 10-27-2011 |
| 20110299128 | REDUCING THE SIZE OF A HIGH RESOLUTION PROFILE LOOKUP TABLE - What is disclosed is a system and method for generating a destination profile LUT. In a manner more fully described herein, a high resolution LUT (e.g., 100-cube LUT) is received. Regions of high curvature of the gamut of an image output device are identified. A non-parametric dynamic optimization node selection method is utilized to select a subset of nodes from the high resolution profile LUT which captures these nonlinearities. Down-sampling the high resolution LUT produces a low resolution LUT. The low resolution LUT is up-sampled to a size of the high resolution LUT to obtain a reconstructed LUT. An error is then calculated between the reconstructed LUT and high resolution LUT. The process of node selection is iteratively repeated until all the subsets of nodes are considered. A destination profile LUT is then generated from the subset of nodes with the least error. | 12-08-2011 |
| 20110304888 | Removing Leakage from a Double-Sided Document - Aspects of the present invention include systems and methods for mitigating the effects of leakage when duplicating an image from a double-sided document. In embodiments, a device is calibrated by computing a leakage function. The leakage function is used to obtain a leakage mitigation function. Given the leakage function and the leakage mitigation function, an estimate of a true version of the document image can be obtained using as inputs only the images of the front-side and back-side of the double-sided document. | 12-15-2011 |
| 20110310440 | IMAGE PROCESSING DEVICE, IMAGE FORMING DEVICE, AND COMPUTER-READABLE MEDIUM - An image processing device includes a screen processing unit and a correction processing unit. The screen processing unit executes screen processing for an image to be processed. The correction processing unit performs correction processing of correcting a distortion of an output image from an original image, based on the amount of the distortion, for (i) the image before the screen processing and (ii) the image after the screen processing. The correction amount relating to the correction processing for the image after the screen processing is a small value as compared with the correction amount relating to the correction processing for the image before the screen processing. | 12-22-2011 |
| 20120127536 | METHOD FOR IMAGE CORRECTION AND SCANNER USING THE SAME - A method for image correction and a scanner using the same are provided. The scanner includes an image sensor and an automatic document feeder. The automatic document feeder has a paperweight mechanism. The method includes marking a first and a second characteristic regions on the paperweight mechanism; using the image sensor to search the two black characteristic regions to define a scan line; when the document is to be scanned, moving the image sensor to a position corresponding to the scan line, and starting to scan the document in order to obtain a scanned image; identifying the scanned image to obtain two position information associated with the two black characteristic regions; calculating a tilt angle of the scanned image according to a distance between the two black characteristic regions and the two location information; and finally correcting the scanned image angle according to the tilt angle. | 05-24-2012 |
| 20120320427 | IMAGE PROCESSING METHOD, IMAGE PROCESSING DEVICE AND SCANNER - An image processing method generally includes: obtaining a vanishing point on a curved surface in a two-dimension image; extracting all the straight line segments between a top contour line and a bottom contour line of the curved surface by the vanishing point; removing a perspective distortion to get parallel straight line segments; obtaining the lengths of the straight line segments, obtaining the true width of each of the straight line segments in a three-dimension space and the depth increment of the straight line segments according to the lengths; obtaining the expanded width of each straight line segment according to the true width and the depth increment; obtaining the total expanded width of the curved surface to transform it into a flat surface; transforming image contents on the curved surface onto the flat surface. | 12-20-2012 |
| 20130107326 | PRINTER WITH AUTO-CLEANING OPERATION AND METHOD THEREOF | 05-02-2013 |
| 20140002865 | TRAPPING METHOD AND APPARATUS | 01-02-2014 |
| 20140022602 | IMAGE FORMING APPARATUS PERFORMING IMAGE FORMING BY SUPERIMPOSING IMAGES OF AT LEAST TWO COLORS, IMAGE FORMING SYSTEM, AND COLOR SHIFT CORRECTION METHOD - An image forming apparatus includes an image forming section, a chart creation section, an input section, and a color shift correction section. The image forming section includes a plurality of image forming units that individually form images of different colors. The chart creation section inputs, to the image forming section, the image data of a chart including first lines containing a reference color and a stepped image located between the first lines and that has second lines containing an adjustment color. The input section receives the input of an adjustment value selected based on a chart formed by the image forming section. In response to the adjustment value, the color shift correction section moves the image forming position of the image forming unit forming the image of the adjustment color with respect to the image forming position of the image forming unit forming the image of the reference color. | 01-23-2014 |
| 20140029061 | IMAGE FORMING DEVICE, IMAGE FORMING METHOD AND PROGRAM - The problem of the present invention is to be capable of executing color shift correction processing also in consideration of a mechanical inclination component in an image forming device. For solving the problem, the image forming device according to the present invention comprises information processing unit, first measurement requesting unit, holding unit of curve information, notifying unit of curve information, receiving unit of a measurement pattern image, measurement processing unit, determining unit of a result of the measurement processing, and second measurement requesting unit. | 01-30-2014 |
| 20140111833 | METHOD OF COMPENSATING DENSITY AND IMAGE FORMING APPARATUS PERFORMING THE SAME - An image forming apparatus according to the present general inventive concept includes a transfer unit configured to transfer an image formed on a photoreceptor to a transfer medium, a power supply unit configured to supply transfer power to the transfer unit, a density sensor unit configured to sense a density of the image transferred to the transfer medium, and a control unit configured to control the power supply unit so that the transfer power supplied to the transfer unit is adjusted, wherein the density sensor unit is allowed to move from a first position for sensing a density of sample patches formed on the transfer medium to a second position for sensing a density of a reference reflective plate, and the control unit performs a sensor compensation mode and a density compensation mode. | 04-24-2014 |
| 20140118792 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM - An image processing apparatus for processing image data to be used for image formation, comprises: a black background area determination unit configured to determine a black background area formed from a plurality of black lines using the number of consecutive black lines and the number of consecutive lines adjacent to the black lines and other than the black lines out of the image data; and a thinning processing unit configured to perform thinning processing for the black background area by switching a thinning pattern to convert a value of a pixel based on the number of lines included in the black background area determined by the black background area determination unit. | 05-01-2014 |
| 20140153057 | Image Processing Apparatus and Computer Readable Storage Medium Stored With Control Program of Image Processing Apparatus - An image processing apparatus ( | 06-05-2014 |
| 20140177004 | IMAGE SCANNING APPARATUS, METHOD FOR IMAGE COMPENSATION AND COMPUTER-READABLE RECORDING MEDIUM - An image scanning apparatus and method are provided. The image scanning apparatus includes a scanner that scans a manuscript to generate a scan image, an image processor that calculates a manuscript boundary on the generated scan image as an equation and compensates a distortion of the scan image using the calculated equation, and a storage member that stores the scan image of which the distortion has been compensated. | 06-26-2014 |
| 20140177005 | IMAGE FORMING APPARATUS - An image forming apparatus includes a reading unit that reads image data, a drawing data storage unit that stores object data comprising the read image data so as to allow the stored object data to be distinguished between a vector object and a raster object, a vector gray determination unit that determines whether each of stored vector objects is formed of an achromatic color, a raster gray determination unit that determines whether each of stored raster objects is formed of an achromatic color, and an output data creation unit that converts the stored object data into multicolor when the stored object data includes a chromatic color and converts the stored object data into monochrome when the stored object data is formed only of achromatic colors. | 06-26-2014 |
| 20140204426 | METHOD AND APPARATUS FOR CORRECTING A PRINTED IMAGE - A method for printing and correction of a printed image defects. The method includes inspection of the printed image and detection of segments of printed image that could contain printed defects. Acquisition of printed image and comparison of the acquired image to an error free image being a source of the printed image facilitates detection and correction of the printed image defects. | 07-24-2014 |
| 20140211267 | METHOD AND APPARATUS FOR HIGH QUALITY PRINTING OF NON-SATURATED COLORED TEXT AND LINES - An embodiment implements a methodology for printing non-saturated text and lines in a way that removes the jagged edge problem. An embodiment uses a combination of two screens, e.g. AM screening and applying pure color. For example, according to the embodiment, the closer to the edge from the interior of text or lines, the less amplitude modulation half toning is applied and the more actual color or contone is applied. A particular algorithm for determining and using a blending parameter is provided. | 07-31-2014 |
| 20140233071 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND STORAGE MEDIUM STORING PROGRAM - A reading unit, which reads images, reads an image of a predetermined pattern that includes a plurality of marks and is printed on a printing medium by executing scanning relative to the printing medium. Image data acquired by this reading is acquired. Reading adjustment values are specified in accordance with displacement amounts of a plurality of regions with respect to ideal positions. The plurality of regions are formed based on the plurality of patterns included in the acquired image data. Reading processing of a reading mechanism | 08-21-2014 |
| 20140240789 | Overcoat Processing Mechanism - A method is disclosed. The method includes analyzing color planes of a compressed sheetside image and generating an overcoat plane based on the color planes. | 08-28-2014 |
| 20140368888 | IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, AND MEDIUM - The present invention is an image forming apparatus for interpreting data to generate intermediate data and the image forming apparatus includes: a unit configured to determine whether or not there is a periodic drawing pattern in data; a unit configured to determine whether or not there is a reduction command in data; a unit configured to obtain a ratio between the number of pitches of the period of the drawing pattern and a reduction ratio included in the reduction command; a unit configured to determine whether or not the ratio and a value in a table loaded by the image forming apparatus coincide with each other; and a unit configured to reduce, in the case where it is determined that the ratio coincides with a value in the table, an image by dividing the image into cells and performing thinning processing in units of cells. | 12-18-2014 |
| 20150022864 | IMAGE SCANNING APPARATUS AND METHOD FOR CORRECTING VERTICAL STREAK THEREOF - An image scanning apparatus includes a scanner which scans a document and generates a scan image, a sensor which senses vertical streaks, a detector which detects a contents area on the scan image, and a corrector which corrects the vertical streaks on the scan image while protecting the contents area. The sensor may sense pole points in a main scan direction on the scan image, sense vertical streak suspected pixels based on a brightness difference and/or a color difference between the sensed pole points and surrounding pixels of the pole points, and may further sense vertical streaks based on the consecutiveness of the vertical streak suspected pixels toward a sub scan direction. | 01-22-2015 |
| 20150036193 | THREE-DIMENSIONAL IMAGE PROGRAM AND PRINTER - A virtual displaying method of a three-dimensional image for displaying at least one image of a plurality of images configuring a virtual three-dimensional image providing a three-dimensional visualization through a lens layer having a plurality of lenses includes applying a deterioration processing to the at least one image, and displaying, in a display section, an obtained image by the deterioration processing. | 02-05-2015 |
| 20150092245 | IMAGE PROCESSING APPARATUS - A light-blocking object processing section produces first and second light-blocking objects to be formed on the front and back surfaces of a print medium, respectively. A first image object is formed on the first light-blocking object and a second image object is formed on the second light-blocking object. If the first and second image objects should be formed in first and second areas, respectively, and the first and second areas defining an overlapping area in which the first image object overlaps the second image object, then the light-blocking object processing section performs one of a first process in which the thickness of the first and second light-blocking objects is smaller in the overlapping area than in a third area outside the overlapping area and a second process in which one of the first and second light-blocking objects is not formed. | 04-02-2015 |
| 20150092246 | IMAGE READING DEVICE DETERMINING WHETHER DARK OUTPUT DATA IS WITHIN PRESCRIBED RANGE - In an image reading device, a storing device stores reference dark output data and reference correction data. A control device, after a command receiving unit receives an instruction to read an original document, generates dark output data based on read data while the light source does not emit light. The control device determines whether the dark output data is within a first prescribed range into which the reference dark output data falls. The control device selects the reference correction data as selected correction data, when determining that the dark output data is within the first prescribed range. The control device generate correction data to correct the image data when determining that the dark output data is not within the first prescribed range, and selects the generated correction data as the selected correction data. The control device corrects the image data by using the selected correction data. | 04-02-2015 |
| 20150131129 | IMAGE FORMING APPARATUS AND ITS CONTROL METHOD - With this invention, color shifting correction is performed first based on shifting amount information indicating a shifting amount with respect to the scanning direction on an image carrier of each image forming unit, and halftone processing is then performed, thus suppressing generation of moiré due to the color shifting correction, and forming a high-quality image. To this end, an image forming engine has color shifting amount storage units C, M, Y, and K (black) which store actual shifting amounts with respect to ideal scan directions on image carriers C, M, Y, and K in image forming units C, M, Y, and K. Color shifting correction amount arithmetic units C, M, Y, and K calculate color shifting correction amounts for respective color components on the basis of the stored color shifting amounts. Color shifting correction units C, M, Y, and K perform color shifting correction by converting coordinates upon reading out image data from bitmap memories C, M, Y, and K on the basis of the calculated color shifting correction amounts, and then perform tone correction. Data after tone correction undergo halftone processing by halftone processors. C, M, Y, and K. PWM processors C, M, Y, and K generate PWM signals for scanning, and output them to exposure units C, M, Y, and K of the respective image forming units. | 05-14-2015 |
| 20160014282 | IMAGE DISPLAY APPARATUS, IMAGE DISPLAY METHOD AND IMAGE DISPLAY PROGRAM | 01-14-2016 |
| 20160100078 | IMAGE DEFORMATION DEVICE - Disclosed is an image deformation device, including: a primary memory in which a positional correction amount data for each pixel, is stored; a reference memory having a smaller storing area than the primary memory; a transfer unit configured to transfer the positional correction amount data stored in the primary memory to the reference memory separately in multiple times; and a positional correction unit configured to carry out a positional correction process, wherein the transfer unit transfers the positional correction amount data according to the predetermined order and a progress of the positional correction process in the positional correction unit so that the positional correction amount data for one pixel has been already stored in the reference memory when the positional correction unit corrects the position of the one pixel. | 04-07-2016 |
| 20160191744 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM - An image processing apparatus includes a geometric correction unit to generate a plurality of pieces of pixel value corrected image data having different pixel values based on object information of input image data, a synthesizer to select a pixel value to be applied to each pixel from the plurality of pieces of pixel value corrected image data to generate corrected image synthesized data, and a pseudo grayscale processor to perform a pseudo grayscale process on the corrected image synthesized data. | 06-30-2016 |
| 20190149692 | METHOD FOR SUBSTRATE SHRINKAGE COMPENSATION | 05-16-2019 |
