Patent application number | Description | Published |
20110052029 | METHOD AND SYSTEM FOR GENERATING ACCENTED IMAGE DATA - A method and system for producing accented image data for an accented image is disclosed. The method includes decomposing each of a first and a second image into a gradient representation which comprises spectral and edge components. The first image comprises more spectral dimensions than the second image. The edge component from the first image is combined with the spectral component from the second image to form a combined gradient representation. Accented image data for the accented image is then generated from data including the combined gradient representation. | 03-03-2011 |
20120114236 | Gamma Adjustment for Maximizing Information in Images - Methods, systems, and apparatus, including computer programs encoded on computer storage media, are described for transforming an image at least in part by using a gamma transformation that maximizes information in the transformed image. In one aspect, a digital image is received and brightness of the digital image is determined. The brightness of the digital image can include luminance or color. Maximum available detail in the digital image is brought out at least in part by applying to the brightness of the digital image a first gamma exponent that is equal to one divided by a negative of an average logarithm of the brightness of the digital image. | 05-10-2012 |
20120121178 | Image Representation Method and Apparatus - A colour image comprises colour values in each of one or more colour channels for each of a plurality of points, or pixels, within the image. The image is represented by rank ordering the values in each colour channel. The image representation generated in this way is usable for automated-vision or computer-vision tasks, for example. | 05-17-2012 |
Patent application number | Description | Published |
20120263377 | IMAGE RECONSTRUCTION METHOD AND SYSTEM - A method and system for producing a scalar image from a derivative field and a vector image is disclosed. A function class c is selected, where all members of the class c are functions which map each vector of the vector image to a unique scalar value. A function f is selected from the class c which maps the vector image to a scalar image, the derivative of which is closest to the derivative field. The scalar image is generated from the vector image by using f to calculate each scalar value in the scalar image from a corresponding vector in the vector image. | 10-18-2012 |
20130322745 | Local Image Statistics Collection - Systems and methods for generating local image statistics are provided. In one example, an image signal processing system may include a statistics pipeline with image processing logic and local image statistics collection logic. The image processing logic may receive and process pixels of raw image data. The local image statistics collection logic may generate a local histogram associated with a luminance of the pixels of a first block of pixels of the raw image data or a thumbnail in which a pixel of the thumbnail represents a downscaled version of the luminance of the pixels of the first block of the pixel. The raw image data may include many other blocks of pixels of the same size as the first block of pixels. | 12-05-2013 |
20130329093 | Nosie-Constrained Tone Curve Generation - Methods to generate, and devices to use, an adaptive tone curve generation operation are disclosed. Tone curves so generated have been found to produce stable tone mapping in a wide range of operational environments, including during multi-exposure fused images (e.g., during high dynamic range image fusion). In general, techniques are disclosed that use a content-load histogram in combination with image capture device noise information to adaptively bound a tone curve's slope and, therefore, the resulting tone curve. As used here, a content-load histogram is a histogram that captures spatial, color or other information carried by an image's pixels at various gray levels. | 12-12-2013 |
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 |
Patent application number | Description | Published |
20130170743 | Detecting Illumination in Images - An image having m light sources, with m preferably equaling 2 or 3, is segmented into different regions, each of which is lit by only one of the m light sources, by obtaining paired imaged with different filtering, for example a filtered and an unfiltered image, applying to the image pairs sets of m pre-computed mappings at the pixel or region level, and selecting the most appropriate. The rendering of the information in the image maybe adjusted accordingly. | 07-04-2013 |
20140140615 | Global Approximation to Spatially Varying Tone Mapping Operators - Techniques to generate global tone-mapping operators (G-TMOs) that, when applied to high dynamic range images, visually approximate the use of spatially varying tone-mapping operators (SV-TMOs) are described. The disclosed G-TMOs provide substantially the same visual benefits as SV-TMOs but do not suffer from spatial artifacts such as halos and are, in addition, computationally efficient compared to SV-TMOs. In general, G-TMOs may be identified based on application of a SV-TMO to a down-sampled version of a full-resolution input image (e.g., a thumbnail). An optimized mapping between the SV-TMO's input and output constitutes the G-TMO. It has been unexpectedly discovered that when optimized (e.g., to minimize the error between the SV-TMO's input and output), G-TMOs so generated provide an excellent visual approximation to the SV-TMO (as applied to the full-resolution image). | 05-22-2014 |
20140212062 | Detail Preserving Image Transfer Operations - Systems, methods, and computer readable media to approximate edge-preserving transformations with global transfer functions are described. In general, a first transfer function that approximates an edge-preserving operation can be found which, together with an enhancement filter (e.g., dynamic range compression) may be used to generate a global transfer function. Alternatively, a second transfer function may be found that approximates the behavior of the combined first transfer function and enhancement filter. Together the first and second transfer functions may generate a global transfer function. It has been determined that a down-sampled version of an input image may be used to develop the global transfer function. Application of global transfer functions in accordance with this disclosure can generate an output image that exhibits the same overall tonality of the input image without introducing the loss of detail and other artifacts attributable to local processing (e.g., the application of edge-preserving filters). | 07-31-2014 |
Patent application number | Description | Published |
20100098330 | DETECTING ILLUMINATION IN IMAGES - An image having m light sources, with m preferably equaling 2 or 3, is sequenced into different regions, each of which is lit by only one of the m light sources, by obtaining paired imaged with different filtering, for example a filtered and an unfiltered image, applying to the image pairs sets of m pre-computed mappings at the pixel or region level, and selecting the most appropriate. The rendering of the information in the image maybe adjusted accordingly. | 04-22-2010 |
20100172574 | ILLUMINANT ESTIMATION - In a method of chromagenic illuminant estimation pixels from mutually-corresponding images with different filtering (e.g. a filtered image and an unfiltered image) are compared, a fraction of the brightest pixels being selected for a subsequent chromagenic estimation. The pixels may be at corresponding locations or they may correspond in that their mean brightness is in the same rank order. In one method, in which, in a first preprocessing stage, for a database of m lights E | 07-08-2010 |
20130051668 | METHOD AND SYSTEM FOR GENERATING ENHANCED IMAGES - A method of generating an image enhancement function for enhancing an input image comprising a plurality of pixels to form an enhanced output image. The method includes receiving a reference image comprising a plurality of pixels; receiving an enhanced image derived from the reference image comprising a corresponding plurality of pixels; calculating a plurality of lookup tables, each of which maps a first plurality of pixel values to a second plurality of pixel values; and generating the image enhancement function comprising a spatially varying function of the lookup tables which when applied to the reference image generates an approximation to the enhanced image. | 02-28-2013 |
20130129204 | Illuminant Estimation - In a method of chromagenic illuminant estimation pixels from mutually-corresponding images with different filtering are compared, a fraction of the brightest pixels being selected for a subsequent chromagenic estimation. The pixels may be at corresponding locations or they may correspond in that their mean brightness is in the same rank order. In one method, in which, in a first preprocessing stage, for a database of m lights E | 05-23-2013 |
20130342557 | Color Correction of Images - Systems and techniques can be used to correct color of an image by expanding red, green, blue (RGB) values at each pixel of the image using a base of order-root functions f(R, G, B). In one aspect, a method includes receiving an image, where a plurality of pixels of the received image have input RGB values that depend on a sensor used to acquire the image; expanding, by an image processor, the input RGB values of the plurality of pixels using a nonlinear base, such that each term of the nonlinear base scales linearly with exposure or brightness of the image; and adjusting, by the image processor, the image by transforming the expanded input RGB values of the image to output RGB values that are independent of the sensor used to acquire the image and scale linearly with the exposure or illumination of the image. | 12-26-2013 |
Patent application number | Description | Published |
20090298521 | SYSTEM AND METHOD OF DELIVERY OF MEDIA DATA - A system, method, and apparatus for controlling the delivery of media data to a plurality of target devices in a target network is disclosed. The system, method, and apparatus allows for control of the delivery of media data from a source device to a plurality of target devices in a target network to be carried out remotely to the target network, but without the need for media data to pass out from or back into the target network via the access network. | 12-03-2009 |
20100034368 | SYSTEM AND METHOD OF PROVIDING A SINGLE SERVICE DESTINATION IN A TELECOMMUNICATIONS NETWORK - A method and apparatus for providing a single service destination in a telecommunications network is disclosed. In particular, but not exclusively, disclosed embodiments relate to the provision of a single mailbox for multi-service users having access to a plurality of different telephony services. | 02-11-2010 |
20150029881 | CONTROLLING A USER DEVICE - Measures for controlling a user device in a telecommunications network, the user device including a user interface, at least a first communication client capable of communicating via a first part of the telecommunications network and a second communication client capable of communicating via a second, different part of the telecommunications network. Network conditions associated with communication via the first part of the telecommunications network using the first communication client are analysed at the user device. In response to the analysis indicating that the quality of a communication session conducted via the first part of the telecommunications network using the first communication client would be below a predetermined communication session quality threshold, the user device configures the user interface to notify the indication to a user of the user device. | 01-29-2015 |