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7613345 |
Image coding apparatus and image decoding apparatus and their control methods, and computer program and computer-readable storage medium
An image coding apparatus for efficient coding on image data having discrete pixel values such as a CG image or a limited color image as well as a natural image where pixel value changes are mild....
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7606433 |
Encoding apparatus, encoding method, and storage medium
In an encoding apparatus or an encoding method, motion-image data is input, an encoding parameter is output such that a predetermined number of codes are used for encoding the input motion-image...
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7606427 |
Efficient rate control techniques for video encoding
This disclosure describes rate control techniques that can improve video encoding. In particular, the described rate control techniques exploit relationships between the number of bits encoded per...
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7602982 |
Method for image coding by rate-distortion adaptive zerotree-based residual vector quantization and system for effecting same
Methods and systems for encoding, transmitting and decoding digital images by rate-distortion adaptive zerotree-based residual vector quantization are disclosed. A method of the invention includes...
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7602981 |
Image storage and display system, maintenance system therefor, and image storage and display method
The invention provides an image storage and display system including: an image storage server that includes an image file storing unit for storing image data; and image display terminals that are...
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7602846 |
Efficiently distributing video using a hybrid network that uses existing infrastructure
A method and apparatus for transporting a video program in compressed form from a source location to a second location. The method comprises receiving at an intermediate location a first compressed...
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7599563 |
Data-transceiving equipment, image processor, and image-processing method
An encoding unit ( 44 ) individually encodes display image-forming image data, i.e., image data from an image input unit ( 2 ), decoded data from a decoding unit ( 46 ), and graphics image data...
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7596178 |
Video encoding method, video decoding method, video encoding apparatus, video decoding apparatus, video encoding program, and video decoding program
A video processing system is provided with video encoding apparatus 1 and video decoding apparatus 2 . The encoding apparatus 1 outputs a maximum delay time that is incurred by backward...
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7593583 |
Apparatus, method and program for compressing information
An information compression apparatus which compresses information and uses a DCT frequency conversion algorithm includes a plurality of block registers, a correction level register, a first control...
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7587092 |
Layer-based context quantization with context partitioning
Conditioning states are selected for coding a source from a plurality of potential conditioning states. The potential conditioning states represent a series of context events, such as a plurality...
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7587091 |
De-interlacing using decoder parameters
Locations of reference blocks of pixels of decoded interlaced video reference fields decoded from a compressed stream of video data are computed using motion vectors decoded from the same stream of...
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RE40909 |
Adaptive variable-length coding and decoding methods for image data
An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current...
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7580585 |
Lossless adaptive Golomb/Rice encoding and decoding of integer data using backward-adaptive rules
A method and system of lossless adaptive Golomb/Rice (G/R) encoding of integer data using a novel backward-adaptive technique having novel adaptation rules. The adaptive G/R encoder and decoder...
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7580584 |
Adaptive multiple quantization
With adaptive multiple quantization, a video or other digital media codec can adaptively select among multiple quantizers to apply to transform coefficients based on content or bit rate...
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7580461 |
Barbell lifting for wavelet coding
A method for encoding motion-compensated video data includes generating, for a current frame, a high-pass wavelet coefficient based on a function of pixels in a temporally adjacent frame. The...
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7580458 |
Method and apparatus for video coding
In uniform superposition of two predictions toward a weighted superposition, such as in coding B frames, weighting is based on reliability of a reference picture used for determination of the...
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7577337 |
Audio/video data recording/reproducing device and method, and audio/video data reproducing device and method
An audio/video data recording/reproducing device is provided that allows all video and audio signals, which can be displayed by a display of the audio/video data recording/reproducing device...
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7577307 |
Fast adaptive lifting lossless wavelet transform
An adaptive lifting transform provides lossless image data compression on an improved edge prediction process. The adaptive predictor works on pixel-by-pixel basis that does not need bookkeeping...
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7577306 |
Digital image coding system having self-adjusting selection criteria for selecting a transform function
In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used...
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7577197 |
Video encoder transmitting extracted image to exterior during encoding process
A video encoder includes a frame synchronizer to temporarily store video data supplied from an exterior in a plurality of memory banks repeatedly selected in a predetermined sequence and to read...
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7574064 |
Fast lifting lossless wavelet transform
The lifting transform reduces the number of lifting steps in lossless data compression while improving the overall rounding errors incurred in the real-to-integer conversion process at each of the...
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7574063 |
Image coding method and apparatus
To reduce the computation cost of rate/distortion optimization in image compression, the rate/distortion gradient of a frame of interest is classified to m categories. A category information...
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7574062 |
Image processing apparatus and method capable of finely adjusting data compression rate
An image processing apparatus includes a coding part that performs coding on image data based on the result of decomposing the image data into bit planes block by block, and a quantization part...
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7574061 |
Encoding device and method utilizing table data for selection of bit planes
An encoding process is provided which can easily control the compression rate or guarantee a maximum required processing time when representing the factor data, obtained from a wavelet...
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7570824 |
Image processing method, image processor, image forming apparatus and memory product
Image data is transformed into spatial frequency components, the transformed spatial frequency components are quantized, a modification process of changing spatial frequency components in a...
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7567960 |
System and method for clustering, categorizing and selecting documents
A method and system of providing a recommendation measures a distance between a first document and group of clustered historic documents using a compression-based dissimilarity measurement (CDM)....
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7567721 |
Digital watermarking of low bit rate video
Methods for embedding digital watermarks in compressed video include perceptual adapting a digital watermark in predicted and non-predicted data based on block activity derived from the compressed...
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7565491 |
Associative matrix methods, systems and computer program products using bit plane representations of selected segments
Associative matrix compression methods, systems, computer program products and data structures compress an association matrix that contains counts that indicate associations among pairs of...
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7565021 |
Efficient implementation of block-based transform on graphics processing unit
Implementations of transforms, such as a discrete cosine transform (DCT) and inverse DCT on a graphics processing unit (GPU), use direct matrix multiplication. GPU features such as parallel...
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7565018 |
Adaptive coding and decoding of wide-range coefficients
A block transform-based digital media codec more efficiently encodes wide dynamic range transform coefficients in two parts: a normalized coefficient and bin address. The normalized coefficient...
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7564382 |
Apparatus and method for multiple description encoding
Apparatus and method for generating multiple descriptions of compressed data is disclosed. In the apparatus and method, transform coefficients are generated from input data and quantized. An energy...
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7561749 |
Apparatus, method, and computer-readable storage medium for lossy and lossless encoding of image data in accordance with an attribute of the image data
Encoded data of a target data amount can be generated by one image input operation in which both lossless encoding and lossy encoding are adopted. For this purpose, a first encoding unit, which...
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7558432 |
Adaptive quantization of depth signal in 3D visual coding
A method of representing an image or sequence of images using a depth map comprises transforming an n-bit depth map representation into an m-bit depth map representation, where m<n, using a...
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7558319 |
Method and apparatus for reproducing images, and image recording apparatus
Structure information on picture within a GOP of a coded data sequence is acquired beforehand. At the time of high-speed reproduction, a high-speed reproduction mode judging unit judges by...
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7557740 |
Context-based adaptive binary arithmetic coding (CABAC) decoding apparatus and decoding method thereof
A decoding method is adapted to be implemented using a Context-based Adaptive Binary Arithmetic Coding (CABAC) decoding apparatus, and includes: initializing a plurality of context variables;...
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7551787 |
Adaptive compression quality
Images are captured and are stored (either in compressed or non-compressed form) in non-volatile storage at a predetermined quality or Q level. When the storage fills to a predetermined threshold,...
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RE40783 |
Adaptive variable-length coding and decoding methods for image data
An adaptive variable-length coding/decoding method performs an optimal variable-length coding and decoding depending on an intra mode/inter mode condition, quantization step size and a current...
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7548657 |
Adaptive video compression of graphical user interfaces using application metadata
Systems, methods and computer accessible medium are provided through which an input data stream consisting one or more media regions before entering a network to be rendered by a display coupled a...
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7545992 |
Image processing system and image processing method
This present invention provides an image processing system and image processing method which can reliably transmit image information to a destination without attaching a large file which applies...
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7542616 |
Apparatus and method for compressing image data
An image data compressing apparatus includes an image data compressor for compressing image data input thereto at first and second compression rates to produce first and second compressed data,...
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7539341 |
Systems and methods for processing image data prior to compression
Systems and methods provide data processing before data compression. The data processing includes contrast enhancement and/or custom color mapping.
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7536058 |
Imaging apparatus and imaging method for compressing image data to a fixed length
An imaging apparatus comprises an imaging device to take an image, a device to create a main image by resizing a main image before compressing imaged by the imaging device, and then by compressing...
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7532358 |
Hardware implemented loss-less page data compressor/decompressor
One embodiment of the invention is directed to a printer that is configured to interleave color plane data. The interleaved data is compressed, thereby forming compressed data having runs, seedrow...
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7529419 |
Data processing device capable of processing image data with small memory capacity, image processing method, and program product
In an image processing device, image data is divided into a plurality of band data including first and second band data. The first band data and the second band data have an overlap region, from...
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7529301 |
Image processing apparatus employing hierarchical encoding
When image data to be encoded is divided into image data items in a plurality of hierarchies and an image data item in a given hierarchy among the divided image data items in the plurality of...
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7523234 |
Motion estimation with fast search block matching
A video encoder and corresponding method are provided for encoding video signal data for an image block and a particular reference picture index to predict the image block, where the encoder...
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7522777 |
Image sensing apparatus and control method thereof
This invention enables deleting and protecting a part of sensed image data in accordance with a situation so as to enable efficient utilization of a finite capacity of a storage medium. To realize...
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7512281 |
Image processing apparatus that can generate coded data applicable to progressive reproduction
An image processing apparatus divides data related to an image into bit-planes and performs a coding process on data of each of the bit-planes. The image processing apparatus includes a multi-layer...
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7502518 |
Apparatus and method for coding image based on level of visual attention and level of perceivable image quality distortion, and computer program product therefor
An apparatus for coding an image includes a setting unit that sets quantization width for each coded block of an image frame of image data. The apparatus also includes a visual attention...
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7502517 |
Image coding apparatus including a coded quantity prediction expression retaining unit
The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image...
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