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7672523 Efficient rate allocation for multi-resolution coding of data  
Methods, systems, and apparatuses for defining a target bit rate and collections of coefficients of source data, as well as a global coding order of the collections of coefficients. A plurality of...
7672524 Quality control for image transcoding  
A method and apparatus transcode an image. An encoded input bitstream of the image is analyzed to obtain a structure of the encoded input bitstream, in which the image includes a...
7660476 Image processing method and image processing apparatus  
There are provided an image processing method and image processing apparatus, which can suitably access a necessary partial image, and can suppress wasteful data transfer by returning data with a...
7657108 Encoding of digital data combining a plurality of encoding modes  
A method of encoding a set of data representing physical quantities includes the steps of dividing the set of data into subsets, calculating a first encoding cost for each subset using a first...
7657056 Apparatus for identifying a photographer of an image  
Disclosed is an apparatus for processing image data in a portable terminal equipped with a camera. In the apparatus the image data photographed by the camera are coded by a predetermined coding...
7657110 Image compression using a color visual model  
A system for coding images, and more particularly, to a system for compressing images to a reduced number of bits by employing a Discrete Cosine Transform (DCT) in combination with a visual model.
7653252 Method and apparatus for boundary-based image compression  
Compressing a data file representing an image wherein one or more regions within the image are identified. At least one of the regions is selected and the data corresponding to the selected region...
7653254 Image coding apparatus and image coding method  
A variable c1 is counted up by one for the Nth bit in attribute information=“1”, and a variable c0 is counted up by one for the Nth bit=“0” (S402). When the total code amount of the coding results...
7650031 Method and system for detecting black frames in a sequence of frames  
Methods and systems for identifying black frames within a sequence of frames are provided. In one embodiment, the detection system detects black frames within a sequence of frames by fully...
7649940 Image encoding apparatus and method  
The invention relates to an image coding apparatus which can improve the picture quality of an image. A quantization scale arithmetic operation section 43 calculates a coefficient of a...
7643690 Image decoding and encoding apparatus, method and computer readable storage medium  
An image decoding apparatus has a video data decoder for receiving and decoding encoded video data to acquire a plurality of reconstructed images; a subsidiary data decoder for receiving and...
7643679 Method and apparatus for block based image compression with multiple non-uniform block encodings  
Embodiments of the present invention are directed to a method and apparatus for block based image compression with multiple non-uniform block encodings. In one embodiment, an image is divided into...
7636483 Code type determining method and code boundary detecting method  
A code type determining method comprises a block selecting step of selecting input image data in units of rectangular blocks, a block determining step of determining whether or not the selected...
7636392 Non-compensated transcoding of a video stream  
Systems and methods for transcoding a transport stream or a video stream. A video stream includes a quantization matrix and a quantization scale that define how DCT frequency coefficients are...
7634121 Method and system for rule-based comparison study matching to customize a hanging protocol  
The present invention provides a method for presenting at least one medical imaging study in a Picture Archiving and Communication System (“PACS”). The method includes selecting at least one...
7630099 Reducing storage requirements for display data  
A method and apparatus for generating a compressed representation of a two-dimensional image where the image is described as a sequence of pixels in raster order. The method includes receiving the...
7630567 Adaptive image coding with pressure-selected regions  
In an image coding method, an area of interest is specified in a captured image displayed on a display section. Positional information of the area of interest is obtained. The compression rate of...
7623719 Video encoding methods and devices  
A video codec of a preferred embodiment is suitable for implementation on a variety of platforms, including platforms where devices require both encoding and decoding engines. Various features of...
7623720 Image processing apparatus and method  
An image processing apparatus capable of controlling the amount of codes in the image data of one image through one-pass encoding, without changing a quantization table. A Discrete Cosine...
7620256 Method and apparatus for processing images in a layered structure  
An image processing apparatus includes an image element allocation unit that allocates image elements included in input image data to any of plural mutually-different coding processings, in...
7616825 Method for compression of image data and corresponding apparatus and computer-program product  
A method for compression includes applying a discrete cosine transform to said image data to obtain transform coefficients, quantizing the transform coefficients by applying a quantization level...
7616821 Methods for transitioning compression levels in a streaming image system  
Methods for transitioning compression levels of a streaming image system are disclosed. One embodiment provides a method for transitioning compression levels between image frames in a streaming...
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....
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...
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...
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...
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...
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...
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 from a...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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)....
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...
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...
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...