Matches 101 - 150 out of 203 < 1 2 3 4 5 >
Match Document Document Title
6654419 Block-based, adaptive, lossless video coder  
Method and system for compression coding of a digitally represented video image. The video image is expressed as one or more data blocks in two or more frames, each block having a sequence of...
6647060 Video compression device and video compression method  
A frame receiving unit calculates the number of a frame to be compressed and gets an image data from the frame. A frame checking unit checks the type of the frame and allocates required code...
6636637 Method and arrangement for coding and decoding a digitized image  
The method and apparatus have a shape-adapted transformation coding is in which in the intra-image coding and the inter-image coding different shape-adapted transformation codings are carried out....
6625215 Methods and apparatus for context-based inter/intra coding mode selection  
A technique is provided for use in a video processing system for selecting between an inter-frame coding mode and an intra-frame coding mode when processing a current portion of a video sequence....
6614845 Method and apparatus for differential macroblock coding for intra-frame data in video conferencing systems  
A process for reducing spatial redundancy and thereby increasing the efficiency of video compression techniques for video conferencing. A process for improving video coding by differential...
6597737 Motion determining apparatus, method thereof, and picture information converting apparatus  
A motion determining apparatus for detecting a motion of a partial picture of an input picture signal is disclosed, that comprises a first motion detecting portion for comparing a frame difference...
6594313 Increased video playback framerate in low bit-rate video applications  
A method comprising selecting a number of blocks of a frame pair and synthesizing an interpolated frame based on those selected blocks of the frame pair. Additionally, the synthesis of the...
6591015 Video coding method and apparatus with motion compensation and motion vector estimator  
A video coding method according to the present invention is adapted to predictively code each target block within a target frame relative to a reference frame. The method includes the steps of: a)...
6580829 Detecting and coding flash frames in video data  
Flash frames are detected in video streams, for example, by looking for short sequences of one or more frames (or, to be more general, pictures) in which the frames within the sequence are not...
6574277 Moving-picture coding apparatus and method  
Distance from a small block to a synchronizing pattern inserted into coded data is calculated for each small block in an image frame. On the basis of the count, a data-loss probability estimation...
6571016 Intra compression of pixel blocks using predicted mean  
An apparatus and method for encoding video frames is provided. The video frames are divided into blocks for encoding. Encoding of the video blocks utilizes motion detection, motion estimation and...
6567556 Method and device for decoding images, allowing a reduced number of openings of memory pages in the prediction processing  
A method and device decode compressed images, and in particular, images compressed according to the MPEG standards, and especially bidirectional images. The time period during which the memory is...
6556718 Video pictures compression and coding with decision step for field/frame and motion vectors DCT  
A method for coding video data according to the MPEG-2 standard is provided. Non-Intra fields are identified among Intra fields and various coding options exist for the non-Intra fields, including...
6529636 Picture coding device and picture decoding device  
If coding is carried out on the block basis on subband coding of an image, the hierarchical characteristic which a subband image inherently has would be lost. Thus, efficient coding is to be...
6519286 Method and apparatus for decoding a stream of data  
A method and apparatus for decoding a stream of data blocks begins by determining an encoding type of a received data block of the stream of data blocks. When the encoding type of the received data...
6513162 Dynamic video communication evaluation equipment  
In a dynamic video communication evaluation equipment for analyzing codes by multiple methods for evaluating a dynamic video image, an analysis including estimation is performed to fix a...
6507616 Video signal coding method  
A video signal coding method is provided which finds proper decision curves according to characteristics of input frames and encodes the optimal macroblock by using the decision curves instead of a...
6507672 Video encoder for digital video displays  
An improved multimedia encoder having features advantageous for use in a computer system. These features provide for the reduction of bandwidth and storage requirements, the enhancement of noise...
6507618 Compressed video signal including independently coded regions  
In a MPEG or other video system, regions of each frame may be independently coded for later, independent extraction directly from a compressed bit stream. An encoder/transcoder receives raw video,...
6493392 Method for coding digital interlaced moving video  
A method for coding a digital interlaced moving video. Picture-unit overhead information is first transmitted and it is then determined whether a video packet to be coded is a first packet of a...
6490321 Apparatus and method of encoding/decoding moving picture using second encoder/decoder to transform predictive error signal for each field  
Progressively scanned specific frames that exist for every predetermined period in a moving picture signal is encoded by infra-frame processing or by uni-directional prediction using other encoded...
6480542 Method for decoding compressed video data with a reduced memory requirement  
For the purpose of bidirectional movement-compensated interpolation, it is proposed, when decoding compressed video sequences, completely to decode only one of the two reference frames. Only those...
6463101 Video encoding method and apparatus  
At the end of encoding of a normal GOP appearing in a predetermined interval, it is checked whether a random access point is designed in the next normal GOP. If it is determined that a random...
6414992 Optimal encoding of motion compensated video  
The present invention involves a system and method for optimizing video encoding. For each candidate motion vector, encoding distortion is determined between a macroblock and a reconstructed...
6411652 Motion estimation  
A method of comparing a current block in a current frame to a plurality of background blocks in a preceding frame. Each block includes a matrix of data values arranged in a given number of columns....
6408029 Method and apparatus for simplifying real-time data encoding  
In accordance with one embodiment of the present invention, a method for encoding data is presented comprising receiving a stream of data to be encoded comprising a plurality of frames, selecting a...
6366615 Moving picture coding method, moving picture decoding method, and apparatus therefor  
A moving picture coding apparatus for coding a moving picture and a moving picture decoding apparatus for decoding a coded moving picture are provided. The moving picture coding apparatus is...
6351493 Coding an intra-frame upon detecting a scene change in a video sequence  
A method and apparatus is described for encoding a video sequence of frames. Each frame in the video sequence is organized in blocks of pixels. A scene change is detected when a current frame in...
6333948 Video coding apparatus, video coding method and storage medium containing video coding program  
In a video coding apparatus coding a motion picture while switching a coding mode between an INTER coding mode and an INTRA coding mode, a motion information management part determines whether or...
6327305 Method and apparatus for encoding a stream of data blocks  
A method and apparatus for encoding a stream of data blocks begins when a stream of data blocks is received. The stream of data blocks may include a plurality of sequences of data blocks. The...
6317518 Image coding apparatus  
An image coder includes an input unit for inputting an image signal, a coding unit for coding the image signal by adaptively switching a first coding mode for performing intraframe coding and a...
6301301 Apparatus and method for coding and decoding a moving image  
In order to reduce the amount of coded data to be generated without deteriorating the visually significant image quality of the image area, the input image signal 1 is first input to the area...
6282240 Picture coder, picture decoder, and transmission system  
A coder receives from a decoder the reception result of coded data, estimates the reception capability of the decoder and, based on the estimate result, updates accordingly the reference data on...
6259736 Video encoder and video encoding method  
A video encoder comprises an encoding section for selectively performing on an input video signal an intra-coding mode for intraframe coding, an inter-coding mode for interframe coding, and a...
6256347 Pixel block compression apparatus in an image processing system  
A memory efficient image processor receives DPCM prediction error values from decompressed MPEG coded digital video signals in the form of pixel blocks containing luminance and chrominance data in...
6243419 Scheme for detecting captions in coded video data without decoding coded video data  
A video caption detection scheme capable of detecting captions from the coded video data which are coded by using a combination of predictive coding and motion compensation, without requiring the...
6236760 Video coding method and device, and corresponding decoding device  
The invention relates to a low/very low bitrate video coding method fully compatible with the H.263 standard includes a first forward coding step, a second backwards prediction step, and a third...
6229854 Video coding/decoding apparatus  
A video coding/decoding apparatus comprises a prediction circuit that divides an input video signal into large regions and small regions in a hierarchical fashion and produces a prediction signal...
6198500 Multi-point conference system and conference terminal device  
A multi-point conference system includes a plurality of conference terminal devices coupled to each other, image information and voice information being transmitted among the plurality of...
6163574 Motion picture encoding system for either intra-frame encoding or inter-frame encoding  
In a motion picture encoding system, which permits encoding of motion picture with high encoding efficiency and also permits improvement of the picture quality, priority orders are preliminarily to...
6160848 Conditional replenishment device for a video encoder  
Conditional replenishment device in a video encoder having a motion estimator (22) providing a predicted block for each predefined block based upon estimating the motion between the predefined...
6157676 Digital video signal inter-block interpolative predictive encoding/decoding apparatus and method providing high efficiency of encoding  
An image encoding apparatus for application to images expressed as respective frames of a digital video signal, whereby an image is converted into an array of blocks with specific blocks...
6125142 Method and apparatus for encoding object information of a video object plane  
A method for encoding a video signal including a video object plane(VOP) and object information thereof, the VOP having an object therein, divides the VOP into a plurality of blocks and detecting...
6122322 Subliminal message protection  
The present invention relates to a method and to a system for detecting a first context change between two frames. When a second context change between a further two frames occurs within a...
6081551 Image coding and decoding apparatus and methods thereof  
To achieve an image encoding apparatus that has extensibility by not limiting an image to be referenced, and that can reduce processing time satisfactorily if the processing of an ordinary frame is...
6037987 Apparatus and method for selecting a rate and distortion based coding mode for a coding system  
An apparatus and concomitant method for selecting a macroblock coding mode based on the measured distortion associated with the selected coding mode is disclosed. The invention selects a coding...
6034730 Module switching type picture compressing and reproducing apparatus  
A picture compressing apparatus compresses pictures which are classified into three types of pictures. They are an I picture that is intra-frame coded, a P picture that is forward inter-frame...
5973743 Mode coding method and apparatus for use in an interlaced shape coder  
A method for encoding mode signals of a target block of M×N pixels having a binary value `0` or `255` is provided. If the target block is determined as neither "all - - 0" nor "all - - 255", the...
5929915 Interlaced binary shape coding method and apparatus  
A method for encoding a binary shape signal determines as a mode of a target block a first and a second modes, if errors of the target block with respect to a first and a second reference blocks...
5926573 MPEG bit-stream format converter for changing resolution  
An apparatus or transforming the resolution of an image from a first image resolution to a second image resolution using operations in the spatial frequency domain. The apparatus converts the...
Matches 101 - 150 out of 203 < 1 2 3 4 5 >