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RE40981 |
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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RE40980 |
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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7616688 |
VSB transmission system for processing supplemental transmission data
A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data-packets includes a VSB supplemental data processor and a VSB transmission system. The VSB...
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7613349 |
Image processing apparatus and method
An image processing method and apparatus capable of decoding and reducing image data encoded with an orthogonal transformation and a variable length decoding in high speed without degrading the...
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7609904 |
Transform coding system and method
A transform coding system and method are disclosed which utilize a modified quantization technique which advantageously foregoes the need for inverse quantization at the decoder. New techniques for...
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7602850 |
Content adaptive variable length coding (CAVLC) decoding
A method and apparatus for decoding a bitstream. The method may include generating an indication of a number of coefficients and a number of trailing ones in a portion of a bitstream using either a...
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7593466 |
Generalized reference decoder for image or video processing
A method and system including an improved generalized reference decoder that operates according to any number of sets of rate and buffer parameters for a given bit stream. Each set characterizes a...
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7586426 |
Image coding apparatus and method thereof
An image coding apparatus includes a variable length coding section, an arithmetic coding section and a common buffer memory. The variable length coding section inputs image data and outputs a...
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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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7583733 |
Methods and apparatus for facilitating network splicing
The invention provides systems and methods for providing compressed video data from multiple bit streams. The systems and methods apply a two-stage strategy. In the first stage, a conditioning step...
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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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7580462 |
Method and system to improve the transport of compressed video data
A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of...
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7580167 |
Determining whether to convert image data in an input color space to an output color space in a transform domain or real domain
Provided are a method, system, and article of manufacture for determining whether to convert image data in an input color space to an output color space in a transform domain or real domain. An...
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7580166 |
Converting image data in an input color space to an output color space in a transform domain
Provided are a method, system, and article of manufacture for converting image data in an input color space to an output color space in a transform domain. An input block of coefficients in an...
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7574065 |
Variable-length code decoder
A method that decodes serially received MPEG variable length codes by executing instructions in parallel. The method includes an execution unit which includes multiple pipelined functional units....
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7574058 |
Image processing apparatus, method and program on a computer-readable medium that increases compression rate
A plurality of band-limited images is produced from an original image. A transformed image is produced by processing each pixel value in the band-limited images so that the absolute value of an...
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7565025 |
Image recording method for image data having image components of three channels and a transmission ratio component of one channel, apparatus and computer readable recording medium storing program
In the structure for image data having image components of three channels and a transmission ratio component of one channel, the image data structure includes an image area in which the image...
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7558431 |
Method and system for discrete cosine transforms/inverse discrete cosine transforms based on pipeline architecture
A method and system for applying pipeline architecture to discrete cosine transform and inverse discrete cosine transform. Each of the discrete cosine transform and inverse cosine transform are...
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7558322 |
Method and apparatus for temporal wavelet compression
A system is described that comprises a method and apparatus for further compressing an already compressed data stream, using a mathematical exclusive-OR computation. The method comprises: receiving...
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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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7548658 |
Lossless video data compressor with very high data rate
Lossless video data compression is performed in real time at the data rate of incoming real time video data in a process employing a minimum number of computational steps for each video pixel. A...
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7545987 |
Image processing apparatus and image processing method
When a plurality of image data are to be compressed, an image correlation information extraction unit extracts respective image correlation information of image data, using first image data as...
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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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7539346 |
H.264 decoding method for fast CAVLC
There is provided a H.264 decoding method for fast CAVLC, which searches multiple tables effectively and fast to obtain coefficients for CAVLC blocks within the shortest period of time such that a...
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7539249 |
Method and system to improve the transport of compressed video data
A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of...
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7539247 |
VSB transmission system for processing supplemental transmission data
A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB...
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7535386 |
Variable length code decoding device and decoding method
A flag indicating whether a decoding process is completed or continued is disposed in each of entries of a decoding process table. A decoded value and a significant bit length are recorded in the...
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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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7526134 |
Image processing apparatus, program, recording medium, and data decompression method
An image processing apparatus includes a decompressing unit decompressing image data having a first data compression format, an obtaining unit obtaining a second data compression format that is...
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7522778 |
Image decoding technique for suppressing tile boundary distortion
An image decoding device for decoding a hierarchically encoded compressed code obtained by dividing an image into a plurality of tiles and performing discrete wavelet transform on the pixel values...
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7519229 |
Video coding system providing separate coding chains for dynamically selected small-size or full-size playback
Embodiments of the present invention provide a coding system that codes data according to a pair of coding chains. A first coding chain generates coded video data that can be decoded by itself to...
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7508328 |
Entropy processor for decoding
A method for processing a variable length code comprising: determining a first address; decoding opcodes from the at least one table starting at a first address; in response to each of the opcodes:...
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7483585 |
Image compression using variable bit size run length encoding
Variable bit size run length encoding (“RLE”) is used to encode uninterrupted runs of adjacent first symbols and adjacent second symbols within a sequence that may represent an image. The...
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7483581 |
Apparatus and method for encoding digital image data in a lossless manner
A method of losslessly compressing and encoding signals representing image information is claimed. A lossy compressed data file and a residual compressed data file are generated. When the lossy...
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7480418 |
Method for processing a digital image and image representation format
An image representation format for representing a digital image comprises: image information stored as a bitstream representing sequential image blocks, each block comprising one or more...
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7471820 |
Correction method for defects in imagers
A method and apparatus that allows for the identification and correction of defective pixels and/or pixel clusters in an imaging device. The method, and implementing apparatus determines that a...
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7471724 |
Method and apparatus for adaptive multiple-dimensional signal sequences encoding/decoding
A hybrid block matching prediction and transform based n dimensional signal sequence encoder, including an encoder motion estimator, having a cost function. A first embodiment includes an...
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7466867 |
Method and apparatus for image compression and decompression
An image compression method for compressing groups of pixel data, including the following steps: MSB portions and LSB portions of the pixel data are compressed separately. Further, the LSB portions...
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7457363 |
Method and apparatus for multi-threaded variable length coding
A device including a variable length coding unit that includes an input unit connected to a stream switching unit, and an output unit connected to the stream switching unit. The input unit to...
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7450775 |
Image processing apparatus for efficient storage of variable block length data
An image processing apparatus performs variable-length compression on the image data of each block included in one page, and adds a bit to the resultant code data of each block to make it have a...
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7447372 |
System(s), method(s), and apparatus for decoding exponential Golomb codes
Presented herein are system(s), method(s), and apparatus for decoding exponential Golomb codes. In one embodiment, there is presented a system for decoding codes having lengths (L) and information...
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7439883 |
Bitstream generation for VLC encoded data
A bitstream generator is described, for placing variable length coding (VLC) data into a fixed width data stream. The bitstream generator includes an input for receiving VLC data; the VLC data may...
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7437007 |
Region-of-interest editing of a video stream in the compressed domain
The present invention, in one embodiment, is comprised of a method of performing region-of-interest editing of a video stream in the compressed domain. In accordance with this method, a video...
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7433531 |
Image pickup apparatus and method
The present invention relates to an image capturing apparatus and method in which the image recording time is reduced and the memory capacity required for compression is also reduced. A...
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7421132 |
Image compressor for generating predicted difference code having fixed bit length by requantizing with coarser quantization steps
An image compressor of the present invention includes a difference calculating unit and a difference requantizing unit. The difference calculating unit calculates a predicted difference between a...
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7418146 |
Image decoding apparatus
Coded data are inputted from a stream analyzing unit to an entropy decoding unit. A group of peripheral information registers stores peripheral information on a target pixel for estimating a...
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7415162 |
Method and apparatus for lossless data transformation with preprocessing by adaptive compression, multidimensional prediction, multi-symbol decoding enhancement enhancements
A process for improved, lossless data transformation with options for adaptive compression, multidimensional prediction, multi-symbol decoding.
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7412099 |
System and method for controlling compression ratio and image quality of binary images
A method, system and computer-readable medium for achieving a target compression ratio for binary images with a minimum of image degradation. Portions of the binary image are strategically...
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7400678 |
Methods in transmission and searching of video information
In a method for transmission of video information between HTTP servers and clients in a shared network resource, particularly Internet, the video information is stored as a video file consisting of...
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7397958 |
Method and device for selecting data in a communication network
The invention relates to a method of selecting data of a compressed digital signal comprising a plurality of levels of spatial granularity of data, in a communication network comprising at least...
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