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7106225 Coding apparatus and imaging apparatus  
The present invention aims to provide a variable-length coding apparatus that achieves a short processing cycle without causing an increase in circuit scale. Such a variable-length coding...
7102551 Variable length decoding device  
A variable length decoding device for decoding variable length coding data and run length coding data according to the present invention comprises a variable length decoding unit 3 for serially...
7099516 System and method for progressively transforming and coding digital data  
A system and method facilitating progressively transforming and coding digital pictures is provided. The present invention via employment of a multi-resolution lapped transform provides for...
7099387 Context-adaptive VLC video transform coefficients encoding/decoding methods and apparatuses  
Transform coefficients of sample blocks of a macroblock of a video picture are encoded by adaptively encoding in combination, the number of non-zero coefficients before the trailing one...
7092578 Signaling adaptive-quantization matrices in JPEG using end-of-block codes  
Previously-unused slots in a Huffman code table associated with a Joint Photographic Experts Group (JPEG) image file are associated with various quantization matrices (Q matrices) that are used to...
7088868 Compression and decompression coding scheme and apparatus  
In a compression and decompression coding method, arrangement and computer program product, a data signal containing a number of symbols is converted into a series of codewords. A set of codewords...
7088866 Image coding method and apparatus for localized decoding at multiple resolutions  
The method generates a compressed digital image from a original image. The compressed digital image allows random access to portions of the compressed image at a number of resolutions. The original...
7079698 Image coding and decoding apparatus, method of image coding and decoding, and recording medium for recording program for image coding and decoding  
In an image decoding apparatus that generates a decoded image from a code sequence. The decoding apparatus has a bus, a computer and a memory, wherein the computer and the memory are connected to...
7079693 Fast image decompression via look up table  
A system to decode compressed digital images decodes frequently occurring variable length symbols encoding a compressed image by selecting a corresponding quantized pixel value for inverse...
7076109 System and method of automatically determining the dominant periodicity in sequential binary data  
A system and associated method automatically and very rapidly determine the dominant periodicity in sequential binary data. The method incorporates a fast binary autocorrelation function used to...
7065139 Video encoding method and video encoder for improving performance  
Video encoding methods and video encoders that provide improved performance while reducing power consumption. In one aspect, a video encoding method comprises the steps of outputting a parameter...
7058229 Palettized image compression  
An adaptive entropy coder is coupled with a localized conditioning context to provide efficient compression of images with localized high frequency variations. In one implementation, an arithmetic...
7046852 Fast image decompression via look up table  
A system to decode compressed digital images coded with frequently occurring variable length or other symbols. The disclosed system extracts one or more symbols from the coded compressed image and...
7043088 Adaptive variable length decoding method  
A method is disclosed for decoding multiple-coded symbols from a coded input symbol stream in a single clock cycle. The method constructs an original Huffman look-up table by extending the...
7039249 Code converter, encoder, image output device and method thereof  
Conversion between different codes can be implemented at high speed by a small device. A code input unit inputs a code. A compatible information reference unit refers to compatible information of...
7020194 Apparatus and method for vector descriptor representation and multimedia data retrieval  
The present invention relates to an apparatus and a method for vector descriptor representation and multimedia data retrieval, which can quantize a plurality of feature values described by a vector...
7013050 Image encoding apparatus and method, program code, and storage medium  
Image data is decomposed into subbands and quantized by a discrete wavelet transformer ( 102 ) and coefficient quantizer ( 103 ). On the other hand, a high-resolution region information input unit...
6996280 Image encoder, image decoder, character checker, and data storage medium  
An image coding apparatus includes an image feature extraction means for generating character data which includes character codes corresponding to character images included in a document image and...
6995346 Fixed pattern noise compensation with low memory requirements  
A method and a system for the compensation of Fixed Pattern Noise (FPN) in digital images have been achieved. The FPN compensation is based on processing done during the production of said images....
6992671 Method and apparatus for compressing Bezier descriptions of letterforms in outline fonts using vector quantization techniques  
Vector quantization provides font contour data reduction. Characters are defined in a font collection using segmented outline forms and common references stored to curve segments for similar...
6993196 Digital image storage method  
A method of storing a digital image file, includes the steps of: storing a header defined by a standard; storing image data encoded according to the standard after the header; and storing an image...
6993202 Decoding apparatus, method, and storage medium for inputting and decoding variable-length coded data  
A decoding apparatus has: M tables for storing, in correspondence with M types of variable-length code tables, minimum code words or maximum code words of classes of variable-length code words...
6985633 Device and method for decoding class-based codewords  
Alphabet-partitioned codewords, for example class based codewords, are decoded using a two-part decoder. The first part is a class code decoder that extracts, from the codeword, information for...
6975774 Quantifying perceptual information and entropy  
A method of quantifying perceptual information and entropy for a data input signal uses an appropriate perceptual model to produce a perceptual response. The perceptual response is then entropy...
6965328 Apparatus and method for supporting plural codecs  
Different video codecs can be integrated or duplicated functions of each codec can be shared. According to an apparatus and method for supporting plural codecs of the present invention, a decoding...
6961474 Huffman encoder for encoding/decoding DCT coefficients  
An apparatus for processing a block of image data at a high speed, in which two items of data consecutive in data scan are simultaneously written in different memories and are processed as a set of...
6956511 Multi-symbol/coefficient decode operation for Huffman codes  
Method and apparatus for use in Huffman decoding are described. In exemplary systems, a JPEG Huffman decoder is capable of simultaneously decoding multiple coefficients and/or symbols in a single...
6954555 Variable length coding unit and variable length decoding unit  
A variable length encoding unit includes a run-length converter, a table memory, and a variable length encoder. The run-length converter converts block data consisting of a plurality of image...
6947944 Database managing apparatus and database record retrieving apparatus  
A database managing apparatus, which can immediately obtain desired data from a database. A database managing apparatus includes a CPU, an input/output device, a main memory and an external memory....
6947606 Skim encoding method for compression of a two dimensional array of data  
A process for compressing a two dimensional array of data including at least one array block having a plurality of block rows and a plurality of block columns of pixels, each pixel having at least...
6940429 Method of context based adaptive binary arithmetic encoding with decoupled range re-normalization and bit insertion  
This invention increases the available instruction level parallelism (IPC) of CABAC encoding by decoupling the re-normalization loop and the bit-insertion task required to create the encoded...
6937170 Variable-length decoding apparatus and method, computer program, and computer-readable storage medium  
This invention reduces the scale of a Huffman table used for decoding. A queuing unit queues a variable-length code word from a received bitstream. A switch circuit discriminates the type of the...
6934417 Transcoding scheme for assistance in image transformations  
This invention proposes to transcode the compressed image, that may be in the JPEG format for example, to an intermediate format that allows pseudo-random access. Such a pseudo-random access would...
6931159 Size reduction method and device for compressed images  
A method and device for reducing a compressed image to a target size by reducing the quality of the image by a quality scaling factor. Image statistics inherent to the image are used to compute the...
6915012 System and method of storing data in JPEG files  
The present invention comprises a system for communicating image data and other data. The system comprises a JPEG file having a JPEG data, at least one non-JPEG data, and a computer. The computer...
6906753 Image processing unit and image processing method with simplified exposure, gain and white balance control  
An image processing unit is provided which can solve a problem of a conventional image processing unit in that the control for coding image data is complicated and its circuit scale is large. The...
6895051 Video data encoder and decoder  
This invention relates to compression of prediction error in motion compensated video coding schemes. Prediction frame and motion vectors are used to extract useful information about the properties...
6891976 Method to decode variable length codes with regular bit pattern prefixes  
Decoding variable length codes having regular bit pattern prefixes enables faster decoding of variable length codes, especially in systems that provide bit or bit mask search capabilities. An...
6882686 System and method for object-oriented video processing  
The object-oriented coder discriminates resource allocation between objects and non-objects for video messaging applications over wireless networks. The object-oriented coder executes a rate...
6882753 Adaptive quantization using code length in image compression  
A method is adapted for compressing an image data block, and includes the steps of: (a) subjecting the image data block to discrete cosine transformation so as to generate discrete cosine...
6882750 Fast loss less image compression system based on neighborhood comparisons  
A fast loss less image compression system based on neighborhood comparisons compares pixel value differences with neighboring pixels and replaces such pixel values with the minimum of the...
6865299 Coding apparatus and method  
A method of performing variable-length coding for a multilevel image with simple processing, and a processing apparatus for executing this variable-length coding method at a high speed have not...
6859562 Coded data length detection apparatus, method of the same, and image coding apparatus  
A coded data length detection apparatus and method capable of detecting a coded data length at a high accuracy at a high speed, wherein original image data input to an image compression and coding...
6850648 System for decoding packed coded image data while depacking same  
A coded image data decoding system is designed to depack and variable-length decode image data packed by an image compressing/decompressing format wherein the sum of the length of components other...
6847735 Image processing system, image processing apparatus, image input apparatus, image output apparatus and method, and storage medium  
This invention has as its object to attain efficient encoding/decoding even when the processing time, memory, arithmetic cost, and the like of an apparatus are limited. Encoded image data is input...
6842540 Surveillance system  
A surveillance image is acquired from a surveillance camera. Supplement information (such as date and time, and surveillance camera number) relating to the surveillance image is acquired. By...
6829299 Variable length decoder and decoding method  
Encoded data using reversible variable length code words is input to a forward decoder ( 123 ) to be decoded in the forward direction. When an error is detected in the encoded data in the forward...
6819802 HVAC system display  
A set of processes are disclosed for compressing and decompressing bitmapped picture files that are to be stored for later display within a control for an HVAC system. The compression process...
6816618 Adaptive variable length image coding apparatus  
In a system for variable-length coding, when image data of a plurality of documents are compressed and stored in a compression memory, the image data is divided into a plurality of areas. Then,...
6807309 Linear list compression  
Methods, apparatus, and computer readable medium for compressing connected component objects ( 300 ) of bi-level images. The compression apparatus ( 204 ) can take various forms including apparatus...
Matches 101 - 150 out of 389 < 1 2 3 4 5 6 7 8 >