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7382923 |
Method and device for processing and decoding a coded digital signal
The present invention concerns a method of processing a coded digital signal containing on the one hand a set of samples of different types obtained by coding a set of original samples representing...
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7076113 |
Apparatus and method for adaptive spatial segmentation-based noise reducing for encoded image signal
An efficient and non-iterative post processing method and system is proposed for mosquito noise reduction in DCT block-based decoded images. The post-processing is based on a simple classification...
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7006631 |
Method and system for embedding binary data sequences into video bitstreams
The present invention is a method and system which extracts, manipulates and embeds data from a compressed and standard compliant video bitstream which may be used for digital rights management,...
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6996170 |
Adaptive optimization methods, devices and appliances for the transmission of coded signals
A method of transmitting blocks of data, in which, for at least one of the blocks of data, at least one parameter associated with this block of data is transmitted, the parameter representing the...
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6798836 |
Device for transmitting television pictures and device for receiving said pictures
Device for transmitting television pictures in the form of transform coefficients and motion vectors. The motion vectors of a sub-picture are converted ( 20 ) into a series of difference vectors...
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6778709 |
Embedded block coding with optimized truncation
A multi-layer embedded bitstream is generated from a subband decomposition by partitioning each subband of the decomposition into a plurality of blocks; and encoding the blocks of each subband. The...
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6757433 |
Object-based quad-tree mesh motion compensation method using greedy algorithm
An object-based quad-tree mesh motion compensation method using the Greedy algorithm is provided. This method defines an object-based quad-tree mesh structure defined by extending a hierarchical...
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6738087 |
Method and system for transferring live video pictures from a video camera to a remote video displayer via a conventional telephone line
A method for transferring live video signals from a video camera of a local system to a remote video-display system via low-bandwidth communication lines is disclosed. The method is especially...
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6717613 |
Block deformation removing filter
When pixel signals included in pixel blocks forming an image are supplied, a detector detects the difference between pixel signal levels in the vicinity of block boundary of the pixel blocks. Then,...
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6690727 |
Image processing
Image processing includes storing N groups of pixels in respective memory banks, each group containing M pixel blocks of a first image and determining matches for two different pixel blocks in a...
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6611274 |
System method, and computer program product for compositing true colors and intensity-maped colors into a frame buffer
The color of a pixel is represented in a pixel storage word, wherein color coordinate data and intensity data are coded separately in two fields of the pixel storage word, the color field and the...
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6577679 |
Method and apparatus for transcoding coded picture signals from object-based coding to block-based coding
A coded object-based picture signal representing a picture is transcoded to a coded block-based picture signal representing the picture by culling signal portions that represent objects not visible...
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6535555 |
Quantizing method and device for video compression
The invention concerns a method comprising a step which consists in a quantizing step relative to a pixel or group of pixels in accordance with a desired rate. The invention is characterized in...
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6496605 |
Block deformation removing filter, image processing apparatus using the same, method of filtering image signal, and storage medium for storing software therefor
A filter for removing block deformation that occurs in an image signal is disclosed. Detected are a plurality of differentials each between at least two pixel signal levels on block boundaries...
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6480664 |
Trick mode VTR which generates trick play data from a stream of images containing intra-pictures and predictive pictures and selects specific DCT coefficients for intra-pictures
Tape formatting, tracking and trick mode data generation are disclosed for providing trick modes for compressed video stored on a video tape. The tape is formatted so that trick mode data is...
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6351226 |
Block-by-block data compression with quantization control
Data are compressed on a block-by-block basis. A frequency-transformer frequency-transforms input data to generate corresponding groups of coefficient values representing different frequency...
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6304295 |
Region-based refresh strategy for video compression
Frames in a video sequence are divided into two or more regions and a specified number of macroblocks are selected in each region for intra-coding. Depending on the particular implementation, for...
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6271885 |
Apparatus and method of motion-compensated predictive coding
A moving picture signal is encoded by motion-compensated prediction using motion vectors for each motion-compensated block of the moving picture signal. The motion vectors are arranged into motion...
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6263105 |
Image processing apparatus and method
A block including a subject pixel is formed from an original image. A first class information generation circuit calculates similarity between a decimated block that is obtained by decimating...
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6243139 |
Apparatus for block-encoding input image signals
There is provided an apparatus capable of preventing the image quality deterioration, in the block encoding of an image signal which has already been subjected to encoding, such as in the dubbing...
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6205250 |
System and method for minimizing clock cycles lost to overhead data in a video decoder
A video processing device capable of minimizing clock cycles lost to overhead information includes an encoder for generating first and second groups of overhead bits. The first group includes a...
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RE37091 |
Motion compensated prediction interframe coding system
A motion compensated prediction interframe coding system which first measures characteristics regarding the fineness of a pattern or texture of a picture, which is represented by an input...
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6125146 |
Method and device for decoding coded digital video signals
The invention relates to a video coding method and system including a quantization and coding sub-assembly (38) in which a quantization parameter is controlled by another parameter defined as being...
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6125143 |
Picture encoding device and method thereof, picture decoding device and method thereof, and recording medium
A picture is divided into either one of three types of macroblocks and then encoded in such a manner that block distortion, mosquito noise and ringing are reduced while picture coding efficiency is...
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5973745 |
Video signal encoding method, video signal encoding apparatus, video signal transmitting method, and recording medium
In a video signal encoding method and apparatus, a video signal transmitting method, and the recording medium, hierarchical encoding of image data implies problems in that a compressing efficiency...
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5973707 |
Scan converting method and apparatus for raster to block and block to raster using a shared block buffer and two input/output buffers, one being raster, the other scan
A scan converting method of converting image data from a raster sequence scan to a block sequence scan to divide the image data into blocks each having predetermined vertical width and lateral...
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5956430 |
Image information coding apparatus and method using code amount of a selected pixel block for changing coding parameter
An image information coding apparatus includes a block generator for dividing image information into pixel blocks, each of which consists of a predetermined number of pixels. A block selector...
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5953079 |
Machine method for compensating for non-linear picture transformations, E.G. zoom and pan, in a video image motion compensation system
Non-linear picture transformations in a video image motion compensation system are caused by camera zooms or rotations. Sets of trial vectors are derived for each block of the image representing...
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5949486 |
Unit for detecting motion vector for motion compensation
Each of element processors arranged in correspondence to pixels of a template block and a search window block respectively includes an A register and a B register provided in parallel with each...
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5946041 |
Apparatus and method of tracking an image-feature using a block matching algorithm
An image-feature tracking apparatus for tracking an object includes a feature deriving part for deriving at least one feature in an image of the object, and a matching operation part for matching...
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5898794 |
Image compression method and image processing system
Disclosed is an image processing system including an image input unit, an extraction unit, a plurality of compression process parts and a selection unit to compress a 1-frame image down to a less...
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5859672 |
Image motion detection device
An image motion detection device includes: a first motion detection section for generating a first motion vector by performing a first motion vector search for a first block included in an image; a...
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5856847 |
High definition television coder/decoder where synchronization is achieved via the addition of absolute time reference signals at the coder
In the combination of a video signal coder and a video signal decoder, synchronization is achieved by the addition of absolute time reference signals at the coder. These time reference signals are...
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5850262 |
Method of fractal image coding and arrangements for performing the method
To achieve an enhanced data reduction, a method of fractal image coding, in which method an image to be encoded is divided into range blocks which do not overlap and jointly cover the image...
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5825934 |
Adaptive image coding method and apparatus
An ADCT mode or a standard mode of still image encoding is employed to perform fixed length encoding. According to the present invention, an image processing apparatus includes a circuit for...
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5771073 |
Advanced television system using a different encoding technique for non-image areas
For a television signal having a succession of video frames, at least some of which have an image area and a non-image area, a frame having a non-image area is encoded by generating identification...
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5742345 |
System for transmitting and receiving video signals using interpolation of adaptive factor
A system for transmitting and receiving video signals compressed into low and high frequency band blocks includes an adaptive modulation circuit and an adaptive demodulation circuit. The adaptive...
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5732157 |
Image processing apparatus and method using lossless encoding of a difference between image blocks
This invention has as its object to provide an image coding method which can efficiently encode image data by fully utilizing a two-dimensional correlation of an image. A block matching means...
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5715006 |
apparatus for and method of motion compensation with boundarycorrection for moving picture
A motion compensated predicting device compensates motion by segmenting a reference image to generate an initial predicted image and estimated value correcting information. The correcting...
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5666162 |
Moving image signal coding apparatus and moving image signal coding control method
A moving image signal coding apparatus and moving image signal coding method dividing one frame of the moving image signal into a plurality of areas which may possibly overlap each other and...
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5638127 |
Adaptive blocking image signal coding system
An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields, even if motion is detected between the...
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5600721 |
Apparatus for scrambling a digital video signal
Apparatus for intermittently or partially scrambling a digital video signal which encodes a digital video signal and successively supplies frames of video data corresponding to the encoded digital...
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RE35414 |
Picture coding and decoding apparatus using vector quantization
An interframe video data coding and decoding apparatus utilizes a differential amplitude suppression circuit in combination with a block encoder and a motion detector to non-linearly suppress...
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5572258 |
Motion compensation estimating device and method achieving improved motion compensation
An area subdividing unit subdivides a reference image, producing sub-areas. An inter-frame difference calculating device determines inter-frame differences between the reference image and an input...
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5515114 |
Motion-vector detection apparatus for a video signal
A frame difference accumulator accumulates differences between the present frame and the previous frame of an input video signal in each block and outputs an accumulated value of each block. A...
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5506624 |
Rotating sample of video images
A computer-implemented method of transmitting images from a transmitter to a receiver (e.g. in a teleconferencing application). A receiver maintains an image in a local storage (e.g. that from a...
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RE35093 |
Systems and methods for coding even fields of interlaced video sequences
In accordance with the invention, a method, for coding multi-mode predictive interpolative coded fields of video, includes the steps of: (a) providing a current field of interlaced pixel data,...
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5467134 |
Method and system for compressing video data
A method for compressing video movie data to a specified target size using intraframe and interframe compression schemes. In intraframe compression, a frame of the movie is compressed by comparing...
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5442407 |
Video signal noise reduction system using time-varying filter coefficients
A video signal noise reduction system is disclosed in which corresponding image pixels from a current frame and image pixels from a noise reduced previous frame are averaged to produce respective...
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5432615 |
Compression/decompression method for image data
A compression/decompression method for image data allows addition of a code amount control amount in units of data of one block without necessitating an excessive header capacity. In compression, a...
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