Class / Patent application number | Description | Number of patent applications / Date published |
382235000 | Substantial processing of image in compressed form | 30 |
20090046935 | IMAGE PROCESSING - First and second codewords are determined, based on first feature vector components of the image elements in an image block, as representations of a first and second component value. Third and fourth codewords are determined, based on second vector components, as representations of a third and fourth component value. First N | 02-19-2009 |
20090060358 | SYSTEM AND COMPUTER READABLE MEDIUM FOR THE SCALING DOWN OF DATA - The scaling down of data is provided. At least two blocks of transformed data samples representing at least two blocks of original data samples are received. One of at least two tables of constants is selected wherein each table of constants is capable of reducing the number of transformed data samples by a different factor. The constants taken from the selected table are applied to the at least two blocks of transformed data samples to produce one block of transformed data samples representing one block of final data samples. The data is processed one dimension at a time by multiplying the data in one dimension with selected constants taken from previously developed tables corresponding to the desired scale down factor. Scaling down by different factors in each dimension as well as scaling down in one dimension and scaling up in the other dimension may be achieved. In addition, the de-quantization of the quantized transform coefficients may be accomplished by pre-multiplication of the selected constants when the quantization values are known. In a similar way the re-quantization may be accomplished by a pre-division of the selected constants. Both de-quantization and re-quantization may be combined when the input quantized transform coefficients and output quantized transform coefficients are desired. | 03-05-2009 |
20090080785 | Bitstream format for compressed image data - It is desirable to provide a bitstream format for compressed data that would allow multiple processors to access and decompress different parts of the data in parallel. Compressed images are usually defined in terms of macroblocks that have a width less than the image width and a height less than the image height. Thus, an image is divided several bands of multiple lines, and each band of multiple lines is divided into a macroblock. The set of macroblocks that define a band is called herein a macroblock rasterscan. The bit stream format includes, for each image, a picture header followed by image scan data. The image scan data includes data corresponding to a plurality of macroblock rasterscans. The data for each macroblock rasterscan includes data for a plurality of macroblocks for a band of lines in the image followed by padding. The padding ensures that data for each macroblock rasterscan terminates on a data boundary. The picture header references an image scan index that indicates a number of macroblock rasterscans in the image scan data and a number of lines per macroblock rasterscan, followed by entries of the index. Each entry in the index includes an offset of the macroblock rasterscan in image scan. The picture header may contain a reference to a picture header type, that references an I_frame_image_descriptor, which references the image scan index. | 03-26-2009 |
20090103818 | Header-based processing of images compressed using multi-scale transforms - A method and apparatus is described for segmenting an image, for adaptively scaling an image, and for automatically scaling and cropping an image based on codestream headers data. In one embodiment, a file that can provide a header that contains multi-scale entropy distribution information on blocks of an image is received. For each block, the block is assigned to a scale from a set of scales that maximizes a cost function. The cost function is a product of a total likelihood and a prior. The total likelihood is a product of likelihoods of the blocks. The image is segmented by grouping together blocks that have been assigned equivalent scales. In one embodiment, the file represents an image in JPEG 2000 format. | 04-23-2009 |
20090110311 | Image processing apparatus, image processing method, and storage medium storing computer program - An image processing apparatus includes an image area separation device, a compression device, an image storage device, an image area storage device, a data writing device, and an image output state monitoring device. The image area separation device separates input image data into image data and image area separation data. The compression device compresses the image data. The data writing device writes the image area separation data to the image area storage device, secures an initial compressed image storage region in the image storage device, and sequentially stores the compressed image data in the initial compressed image storage region. The image output state monitoring device monitors a compressed image data amount, and causes the data writing device to secure an additional storage region in the image storage device when the compressed image data amount has reached or exceeded a data amount storable in the initial compressed image storage region. | 04-30-2009 |
20090141992 | METHOD AND SYSTEM FOR GENERATING A QUALITY PREDICTION TABLE FOR QUALITY-AWARE TRANSCODING OF DIGITAL IMAGES - Several quality-aware transcoding systems and methods are described, in which the impact of both quality factor (QF) and scaling parameter choices on the quality of transcoded images are considered in combination. A basic transcoding system is enhanced by the addition of a quality prediction look-up table, and a method of generating such a table is also shown. | 06-04-2009 |
20090148055 | IMAGE PROCESSING APPARATUS - An image processing apparatus for correcting a dislocation of image, pixels being arranged in a first and second directions perpendicular to each other, including: a section which breaks down a correction amount of the image of each pixel in the second direction into a first shift amount with a unit of a prescribed block, a second shift amount with a unit of the pixel, and a third shift amount less than the pixel size; a minimal shift section which shifts the image data by the third shift amount; a pixel unit shift section which shifts the image data by the second shift amount; and a block unit shift section which shifts the image data by the first shift amount, during compression and storage processing of the image data in the block unit, and executing arrangement of the image data after reading-out and expanding the compressed image data. | 06-11-2009 |
20090148056 | Video Processing With Tiered Interdependencies of Pictures - Systems and methods that receive a video stream comprising a sequence of plural compressed pictures, wherein the plural compressed pictures comprises a plurality of sets of compressed pictures, wherein each set in the plurality of sets has a respective picture interdependency characteristic, wherein the compressed pictures in the first set depend for decoding only on pictures from the first set. | 06-11-2009 |
20090185750 | Method for the image compression of an image comprising 3D graphics information - An embodiment of a method is disclosed for compressing digital images which can be displayed by a graphics card. An embodiment of the method includes providing an image by the graphics card; marking out a foreground region in the image provided on the basis of depth information provided in the graphics card; compressing the marked-out foreground region; simplifying the image by smoothing the foreground region marked out in the image; and separately compressing the simplified image. | 07-23-2009 |
20090202162 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD, INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD, INFORMATION RECORDING DEVICE AND INFORMATION RECORDING METHOD, INFORMATION REPRODUCING DEVICE AND INFORMATION REPRODUCING METHOD, STORAGE MEDIUM, AND PROGRAM - The present invention allows usable information to be selected by comparing information regarding encoding with conditions regarding encoding processing. When delay modes, picture structures, and pulldown modes do not match each other between previous encoding time and re-encoding time, parameters are not reused. When they match and image frames do not match, a picture type is reused. When a bit rate in the previous encoding is smaller than that in the current encoding and a chroma format is larger than the current chroma format, a picture type and a motion vector are reused. When the conditions are not satisfied, parameters are supplied and received and a determination is made as to whether or not chroma formats match each other. When the chroma formats do not match each other, picture-type information, motion-vector information, and quantization-value information are reused. When the chroma formats match each other, stream data input to a decoding unit is output. The present invention can be applied to an encoding unit, an encoding device, or a transcoder. | 08-13-2009 |
20090245665 | Systems and methods for resolution switching - Systems and methods are provided for switching a resolution of an image, wherein the image includes at least one block. In some embodiments, the image is compressed. At least one compressed block in the compressed image is tagged, if the data size of the compressed block exceeds a threshold. A non-transition region is grown based on the at least one compressed block that is tagged until a safe-transition block is reached, wherein the non-transition region includes the at least one compressed block in the compressed image. The resolution of each compressed block in the non-transition region is reduced. | 10-01-2009 |
20090245666 | IMAGE FILE EDITING APPARATUS AND METHOD, AND PROGRAM - An image file editing method includes an analysis step of analyzing a compression format of each of a plurality of images included in a plurality of image files, a display step of displaying analysis results together with thumbnail images each of which corresponds to one of the plurality of images, a selection step of selecting images based on the thumbnail images, a determination step of determining, based on the results obtained in the analysis step, whether or not a compression format of each selected image is changeable, a compression step of applying a changed compression format, and an output step of collectively outputting selected images as a single image file. | 10-01-2009 |
20090279798 | Fast Visual Degrading of Images - Embodiments of the present invention relate generally to visual degrading of images. Systems and methods for fast visual degrading of an entire image or localized region(s) within the image are provided. In an embodiment, a system for fast localized visual degrading of images includes a map creator and a coefficient list modifier. The map creator generates a map. The map may identify one or more degradation regions within an image. The coefficient list modifier reduces coefficient data in at least one block associated with a degradation region identified in the map. In another embodiment, a computer-implemented method for fast localized visual degrading of images is provided. The method includes generating a map that identifies one or more degradation regions within an image, and reducing coefficient data in at least one block associated with a degradation region identified in the map. | 11-12-2009 |
20090324114 | IMAGE COMPRESSION APPARATUS AND IMAGE COMPRESSION METHOD - An image compression apparatus includes: first and second imaging sections for capturing an image of a subject to generate first and second image signals, respectively; first and second encoding sections for encoding the first and second image signals to generate first and second image data, respectively; first and second distance measuring sections for measuring a distance to the subject for each of image blocks, at the same time as the first and second imaging sections perform image capturing, to generate first and second distance information, respectively; first and second multiplexing sections for generating first and second multiplexed data on the basis of the first and second image data and the distance, respectively, by respectively multiplexing the first and second image data and first and second distance data, which are generated on the basis of the first and second distance information and indicate the distance to the subject for each of predefined pixel blocks in the first and second image data, respectively; and a compression processing section for reducing amounts of the first and second multiplexed data to generate compressed data. The compression processing section generates the compressed data by extracting long-distance blocks in the first and second image data on the basis of the first and second distance data, respectively, calculating a differential between the long-distance blocks in the first and second multiplexed data, and deleting the long-distance blocks in the first or second multiplexed data which are identical to their counterparts in the other multiplexed data. | 12-31-2009 |
20100080476 | METHODS AND SYSTEMS FOR PROXY MEDICAL IMAGE COMPRESSION AND TRANSMISSION - In accordance with one or more implementations of the present principles, digital medical images may be efficiently transmitted between industry protocol compliant stations. Proxies may be employed to intercept messages and data transmitted between the stations and to enable transmission of data between the stations in compressed form. Further, the proxies may be incorporated into existing systems without altering integrated components to permit efficient and seamless implementation of one or more compression schemes. | 04-01-2010 |
20100254621 | DEPTH BUFFER COMPRESSION - Device, computer readable medium, and method for selecting compression modes to be applied in a depth buffer ( | 10-07-2010 |
20110170791 | BITSTREAM FORMAT FOR COMPRESSED IMAGE DATA - It is desirable to provide a bitstream format for compressed data that would allow multiple processors to access and decompress different parts of the data in parallel. Compressed images are usually defined in terms of macroblocks that have a width less than the image width and a height less than the image height. Thus, an image is divided several bands of multiple lines, and each band of multiple lines is divided into a macroblock. The set of macroblocks that define a band is called herein a macroblock rasterscan. The bit stream format includes, for each image, a picture header followed by image scan data. The image scan data includes data corresponding to a plurality of macroblock rasterscans. The data for each macroblock rasterscan includes data for a plurality of macroblocks for a band of lines in the image followed by padding. The padding ensures that data for each macroblock rasterscan terminates on a data boundary. The picture header references an image scan index that indicates a number of macroblock rasterscans in the image scan data and a number of lines per macroblock rasterscan, followed by entries of the index. Each entry in the index includes an offset of the macroblock rasterscan in image scan. The picture header may contain a reference to a picture header type, that references an I_frame_image_descriptor, which references the image scan index. | 07-14-2011 |
20110229050 | AGGREGATION OF REDUCED-SIZED IMAGES - A method includes receiving, from a first user, first location data identifying a first storage location at which a first image is stored, The first image is retrieved from the first storage location identified by the first location. A first reduced-size image is generated using the first image. The first reduced-size image is aggregated with a second reduced-size image for presentation at a remote site, the second reduced-size image being generated using a second image retrieved from a second storage location identified by second location data received from a second user. | 09-22-2011 |
20110249907 | IMAGE COMPARISON APPARATUS, IMAGE COMPARISON METHOD, AND PROGRAM - A code block size comparison unit examines an inclusion relationship of code block size. A comparing target code block determination unit determines a comparing target code block based on an inclusion relationship of code block. A zero bit plane number comparison unit compares the numbers of zero bit planes of the comparing target code blocks and determines match or mismatch between a specific image and a comparing target code stream. The invention can be applied to, for example, an image comparison apparatus. | 10-13-2011 |
20120063694 | Methods and Systems for Estimation of Compression Noise - Aspects of the present invention are related to systems and methods for determining the compression noise present in an image or frame in a video sequence. | 03-15-2012 |
20120082393 | ATTITUDE ESTIMATION WITH COMPRESSIVE SAMPLING OF STARFIELD DATA - In general, in one embodiment, a starfield image as seen by an object is analyzed. Compressive samples are taken of the starfield image and, in the compressed domain, processed to remove noise. Stars in the starfield image are identified and used to determine an attitude of the object. | 04-05-2012 |
20120121197 | METHOD FOR ESTIMATING THE THROUGHPUT AND THE DISTORTION OF ENCODED IMAGE DATA AFTER ENCODING - A method for estimating a bit rate and the distortion of at least one compressed image using at least one wavelet transform operation delivering at least one sub-band b containing coefficients, said sub-band being subdivided into at least one packet of coefficients associated with a compression quality layer, said packet also including a packet header and being transmitted through a propagation channel, said method including estimating a distortion D | 05-17-2012 |
20120224776 | IMAGE QUALITY CONTROL TECHNIQUES - A technique for controlling the quality of one or more compressed images. The technique allows, for example, the selection of a target quality metric(s) and the compression of the image(s) such the compressed image(s) meets the metric(s). Alternatively, a target quality metric can be specified, and the image(s) compressed using parameters estimated to achieve the target quality. Optionally, the quality metric can also be made available to, for example, a user on an image processing system. The quality metrics can be, for example, for one or more layers, one or more images and/or one or more image sequences. | 09-06-2012 |
20130301945 | IMAGE QUALITY CONTROL TECHNIQUES - A technique for controlling the quality of one or more compressed images. The technique allows, for example, the selection of a target quality metric(s) and the compression of the image(s) such the compressed image(s) meets the metric(s). Alternatively, a target quality metric can be specified, and the image(s) compressed using parameters estimated to achieve the target quality. Optionally, the quality metric can also be made available to, for example, a user on an image processing system. The quality metrics can be, for example, for one or more layers, one or more images and/or one or more image sequences. | 11-14-2013 |
20140037222 | Methods and Systems for Detection and Estimation of Compression Noise - Systems and methods for estimation of compression noise in an image or in a video sequence are provided. Difference values in a first direction are computed, and a plurality of statistical feature values for the difference values are computed in association with a plurality of offsets. At least one feature value is computed using the plurality of statistical feature values, and a compression-noise estimate may be determined in accordance with a criterion based on a comparison of the at least on feature value and an associated threshold and an additive noise estimate. | 02-06-2014 |
20140093182 | IMAGE PICKUP APPARATUS AND IMAGE PICKUP CONTROL APPARATUS - Provided is an image pickup apparatus including: an image pickup unit configured to pick up an image; a frequency decomposition unit configured to frequency-decompose the picked-up image into one or more high-frequency images of high frequency components and a low-frequency image of a low frequency component; a first encoding unit configured to encode the high-frequency images to generate encoded high-frequency images; an image processing unit configured to subject the low-frequency image to image processing to generate an adjusted low-frequency image; a difference generation unit configured to generate difference information for the adjusted low-frequency image and the low-frequency image; a second encoding unit configured to encode the difference information to generate encoded difference information; and a transmission unit configured to transmit the encoded high-frequency images, the encoded difference information, and the adjusted low-frequency image. | 04-03-2014 |
20140363093 | Device and Method of Improving the Perceptual Luminance Nonlinearity-Based Image Data Exchange Across Different Display Capabilities - A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values. | 12-11-2014 |
20150312593 | COMPRESSION OF LIGHT FIELD IMAGES - RAW images and/or light field images may be compressed through the use of specialized techniques. The color depth of a light field image may be reduced through the use of a bit reduction algorithm such as a K-means algorithm. The image may then be retiled to group pixels of similar intensities and/or colors. The retiled image may be padded with extra pixel rows and/or pixel columns as needed, and compressed through the use of an image compression algorithm. The compressed image may be assembled with metadata pertinent to the manner in which compression was done to form a compressed image file. The compressed image file may be decompressed by following the compression method in reverse. | 10-29-2015 |
20160119634 | PERCEPTUAL LUMINANCE NONLINEARITY-BASED IMAGE DATA EXCHANGE ACROSS DIFFERENT DISPLAY CAPABILITIES - A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values. | 04-28-2016 |
20160162326 | Compression Within A Set Of Images - The present disclosure relates generally to a system and method for file compression. More specifically, the disclosure introduces to a method for file compression wherein a group of files is identified by comparing a plurality of similarity characteristics. The group of files may then be compressed relative to at least one base file to improve compression efficiency. | 06-09-2016 |