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7308147 Image processing apparatus, image recording apparatus, image reproducing apparatus, camera system, computer program, and storage medium  
An image processing apparatus includes an image compression device which performs a discrete wavelet transform of pixel values for each rectangular portion to produce wavelet coefficients, and...
7260148 Method for motion vector estimation  
A method and apparatus for encoding video includes selecting a prediction motion vector for a current block of a current image frame from respective motion vectors of two or more neighbor blocks of...
7123658 System and method for creating multi-priority streams  
A system and method for creating multi-priority streams of compressed video data. Included is a method for assigning priority to streams of compressed video data, comprising the steps of:...
7072398 System and method for motion vector generation and analysis of digital video clips  
Given a digital video clip, this invention describes how to efficiently compute the motion vectors and motion trajectory of each identified video object for facilitating various commonly...
7016415 Modifying motion control signals based on input video characteristics  
A motion detector ( 300 ) detects motion of images represented by video pixels. A first motion detector ( 320 ) is arranged to generate first motion signals (S) representing detected motion of...
7010040 Apparatus and method of transcoding image data in digital TV  
A method and an apparatus of transcoding image data in a digital TV system are disclosed. The method and apparatus of the present invention performs global and local motion compensation processes...
7006157 Apparatus and method for converting frame rate  
Provided are a method and apparatus for performing frame rate conversion. With the apparatus, current video data and previous video data are compared with each other and a motion vector is detected...
6985604 Method, system and apparatus for block matching based on visible pixels  
In block-based motion or depth estimation, a block is assigned a motion or depth value as a result of minimizing the matching error over a limited set of candidate values. The matching error for...
6930689 Hardware extensions for image and video processing  
A processing device ( 200 ) includes three hardware extensions: a motion estimation extension 202 , a pixel interpolation extension 204 and a DCT/iDCT extension 206 . The hardware extensions...
6917650 Image motion detecting circuit  
An image motion detecting circuit and an image motion detecting method of the present invention can accurately detect motion of such an image sequence that different still pictures are connected...
6912296 Motion estimation method  
A motion estimation method is provided. In the method, respective mean difference values for a current search point within a search block and neighboring search points within the search block are...
6850569 Effective motion estimation for hierarchical search  
In the present invention, a reference block data within a current image from which a motion vector will be obtained and corresponding search region data within reproduced previous image are stored...
6823012 Method and system for estimating motion vector at high speed for low bit-rate coding  
A method and system for estimating a motion vector (MV) at high speed for low bit-rate coding is provided. The method and system for estimating a motion vector includes (a) forming sum pyramids for...
6778605 Image processing apparatus and method  
An encoding apparatus/method for encoding input image data on a block unit basis of a predetermined size by using a motion compensation is provided. Among blocks constructing one picture, motion...
6771704 Obscuring video signals for conditional access  
A video data stream is re-encoded using motion vectors from a prior encoding operation. The video data may be enhanced by the system. Information about the enhancement, along with the decoded...
6757330 Efficient implementation of half-pixel motion prediction  
An improved form of half pixel accuracy motion estimation/compensation using the MPEG recommended half pixel approach resides in method and system. In the inventive method, an interpolated...
6748017 Apparatus for supplying optimal data for hierarchical motion estimator and method thereof  
An apparatus for supplying optimal data for a hierarchical motion estimator, and a method thereof are provided. This method is performed by a data supplying apparatus including an SDRAM for storing...
6738497 Method, system and apparatus for image block matching  
In block-based motion or depth estimation, a block is assigned a motion or depth value as a result of minimizing the matching error over a limited set ( 45 ) of candidate values ( 20, 21, 22, 23 )....
6728315 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations  
A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion...
6690728 Methods and apparatus for motion estimation in compressed domain  
Methods and systems for obtaining a motion vector between two frames of video image data are disclosed. Specifically, methods and systems of the present invention may be used to estimate a motion...
6678329 Client-assisted motion estimation for client-server video communication  
A system and method for client-assisted motion estimation for client-server video communication is disclosed. The present invention includes the steps of receiving a request to update a current set...
6671321 Motion vector detection device and motion vector detection method  
A motion vector detection device of the present invention includes: a parameter setting section having parameters relating to N (N is a natural number equal to or greater than 2) search regions...
6654502 Adaptive early exit techniques in image correlation  
Plural sum of absolute difference devices are used to calculate distortions between specified parts of specified images in a video stream. The video can be from a video camera, or other device.
6618440 Burst mode memory fetches when decoding compressed image data  
An image data decompression apparatus for decoding blocks of motion compensated non-intra coded data uses a memory ( 14 ) storing reference picture data. A decoding processor ( 12 ) decodes a...
6614846 Method and apparatus for transmitting, encoding and decoding video signal and recording/reproducing method of optical disc  
The present invention includes a motion vector detector for detecting motion vectors using a first image signal of high resolution; a resolution reducer for creating a second image signal of low...
6600784 Descriptor for spatial distribution of motion activity in compressed video  
A method describes motion activity in a video sequence. A motion activity matrix is determined for the video sequence. A threshold for the motion activity matrix is determined. Connected regions of...
6590999 Real-time tracking of non-rigid objects using mean shift  
A method and apparatus for real-time tracking of a non-rigid target. The tracking is based on visual features, such as color and/or texture, where statistical distributions of those features...
6574274 Picture signal processing system, decoder, picture signal processing method, and decoding method  
A picture signal processing system is disclosed, that comprises a decoder for generating the number of encoded bits and/or an average quantizing scale as representative value(s) of encoding...
6525773 Image processing device and method with data block flow control  
An image processing device of the present invention includes a plurality of processing sections for successively receiving and decoding a plurality of data blocks, which have been obtained by...
6522785 Classified adaptive error recovery method and apparatus  
A method, apparatus, and article of manufacture for restoring a deteriorated signal to an undeteriorated signal. A deteriorated signal consists of a plurality of deteriorated and undeteriorated...
6489996 Moving-picture decoding method and apparatus calculating motion vectors to reduce distortion caused by error propagation  
A moving picture coded by inter-frame coding, with motion compensation, is decoded by an apparatus that stores at least two previously decoded frames, together with information identifying any...
6489995 Method and apparatus for motion vector concealment  
An innovative method and apparatus for decoding an encoded image such as a video. In one embodiment a method for decoding an encoded block of an image, e.g.,a video frame, having an error in its...
6487313 Problem area location in an image signal  
In a method of locating problem areas in an image signal (I), a motion vector field (Df) is estimated for the image signal (I), and edges are detected in the motion vector field (Df). In a...
6480544 Encoding apparatus and encoding method  
In an encoding apparatus for processing a video signal with a signal processing circuit, producing coefficient data by an orthogonal transform of differential data obtained by motion compensation,...
6456660 Device and method of detecting motion vectors  
A motion vector detection device is provided that can suitably detect motion vectors by setting an optimum search range of vector values of a motion vector. The motion vector detection section 103...
6452637 Image frame fusion by velocity estimation using region merging  
A process for obtaining information from at least two image frames of a sequence of frames, each of the frames including an array of pixels, each pixel having an amplitude, one of the two frames...
6411341 Adaptive picture delay  
Image information is stored into a memory device (FM ORG ) which is controlled in such a manner that only image information from a movement phase different from the movement phase of the image...
6337710 Graphical video editing system for regeneration of bitstreams  
A graphical video editing system that allows manipulation of images for input to the video encoding and decoding process. The debugging of video encoders and decoders is aided by user controlled...
6320906 Motion vector detecting circuit  
In an animation encoding process, a motion vector which can minimize an AC component included in a discrete cosine transform result is detected. For this purpose, a block X (i, j) to be processed...
6301391 Coding apparatus  
An identical-image coding portion obtains a code for a currently processed block area of image information as a result of coding an index indicating an identical block area of image information,...
6292589 Method for choosing rate control parameters in motion-compensated transform-based picture coding scheme using non-parametric technique  
A method of assigning quantization values for use during the compression of images is disclosed. The method includes constructing a non-parametric model during a training phase based on...
6282243 Apparatus and method for interframe predictive video coding and decoding with capabilities to avoid rounding error accumulation  
A method and apparatus for interframe predictive video coding and decoding which avoid the accumulation of rounding errors and thus obtain high-quality reproduced pictures. A frame memory outputs...
6256343 Method and apparatus for image coding  
In an image coding such as the international standard H.263, when a motion compensated predictive error signal is orthogonal transformed, derived transform coefficients are quantized and coded, and...
6243032 Decode apparatus that can accommodate dynamic change in sample data attribute during decoding process  
An A/V signal pickup unit receives an audio digital data stream. A CPU carries out a decode process, and adds tag data indicating the attribute of audio sample data to provide the same to an audio...
6229570 Motion compensation image interpolation--frame rate conversion for HDTV  
A process for up-converting an existing video source signal having a low frequency (frames/second) to a high frequency signal for use with High Definition Television (HDTV). The process samples the...
6222883 Video encoding motion estimation employing partitioned and reassembled search window  
A digital video encoder is provided having an enhanced search range for motion estimation and compensation. The encoder is adapted to define from a reference frame a diamond-shaped search window...
6219382 Method and apparatus for locating a caption-added frame in a moving picture signal  
Every frame represented by a moving picture signal is divided into blocks. Calculation is made as to a number of pixels forming portions of a caption in each of the blocks. The calculated number of...
6219103 Motion-compensated predictive coding with video format conversion  
An input first video signal is converted by video format conversion into a second video signal to be encoded. The number of effective scanning lines of the second video signal is different from the...
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...
6192156 Feature tracking using a dense feature array  
A method for feature tracking across a plurality of related image frames by developing a dense array of features and their paths as a deformable, regularly spaced grid, with vectors for each nodal...
Matches 1 - 50 out of 171 1 2 3 4 >