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5838375 |
Method and apparatus for coding an image and reducing bit generation by HVS (human visual sensitivity)
A method and apparatus for coding an image for reducing the amount of bit generation. Those are realized by eliminating a perceptual error from a predict error, which is generated in performing a...
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5835163 |
Apparatus for detecting a cut in a video
Apparatus for detecting a cut in a video comprises arrangements for acquiring video images from a source, for deriving from the video images a pixel-based difference metric, for deriving from the...
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5831688 |
Image coded data re-encoding apparatus
A image coded data re-encoding apparatus for regenerated image coded data for transmission or storing by re-encoding decoded image data according to the present invention comprises an image decoder...
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5828423 |
Motion vector detection circuit provided with the picture data memory
The address generation unit 166 generates a write address for each picture data to be written in the frame memory 169. The memory control unit 165 writes picture data which have the same Y address...
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5825928 |
Decoding apparatus for error concealment considering motion directions of moving images
A motion image decoding apparatus receives encoded image data which has first, second and third data regions, such as MPEG macroblocks which have predetermined sizes, and a motion vector for each...
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5825423 |
Apparatus for detecting motion vectors using moving object patterns
An apparatus for estimating motion vectors between a current frame and a reference frame of video signals employs a set of moving object patterns, each of the, moving object patterns representing a...
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5822007 |
Method and apparatus for motion estimation using block matching
Block matching is well known as a robust and intuitively simple method of motion estimation for television pictures. However, when the purpose of the motion estimation is to provide accurate...
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5818535 |
Method and apparatus for adaptive hybrid motion video compression and decompression
A method and apparatus for compression and decompression of motion video data. According to one embodiment, a method for compression of a first frame of motion video is provided, wherein the first...
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5818536 |
Motion vector selection using a cost function relating accuracy to bit rate
A method and apparatus for improved motion vector selection in the motion estimator stage of a video encoder such as an MPEG coder are provided. From a received (re-ordered) image frame sequence, a...
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5818969 |
Intelligent start for motion estimation search
An intelligent start for a block-matching search is employed. Motion vectors which have been calculated for immediately adjacent blocks in the same image and for corresponding blocks in previous...
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RE35910 |
Moving image signal encoding apparatus and decoding apparatus
A moving image signal encoding apparatus includes: a frame decimating circuit for extracting . .encoded.!. frames from an input moving image signal at specified intervals; a frame interpolating...
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5815217 |
Scene-change detector for a moving image composed of a plurality of frames
A scene-change detector is disclosed which detects a scene-change of a moving image composed of a plurality of frames. In the apparatus, a moving image is encoded based on the correlation between...
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5815602 |
DCT image compression and motion compensation using the hadamard transform
The objective of this invention is to provide a data processor which can perform motion estimation of moving images at high speed and high accuracy. The data processor according to this invention...
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5812219 |
System and method for transmitting picture or sound signals
Due to a reduction of block artefacts in the reconstructed signal, lapped signal transforms are more suitable than non-lapped transforms for compressing picture and sound signals. Nevertheless, the...
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5812199 |
System and method for estimating block motion in a video image sequence
A system for estimating block motion from a previous frame to a current frame, wherein motion vectors have been computed for blocks in the previous frame. The system comprises a P-checkerboard...
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5812198 |
Video coding decoding apparatus
This invention relates to a video coding decoding apparatus for effectively refreshing a video and for recovering degradation of a video caused by code error, in a short time. A video coding...
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5812197 |
System using data correlation for predictive encoding of video image data subject to luminance gradients and motion
An MPEG based video signal compression system reduces picture degradation caused by sub-optimal selection of a prediction mode. A disclosed method produces a compressed video output signal from a...
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5808685 |
Block matching motion estimation apparatus employing a weight function
A blocking matching motion estimation apparatus estimates a displacement of a search block in a current frame with respect to each of candidate blocks in a previous frame to produce motion vectors...
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5808700 |
Motion video coding systems with motion vector detection
A motion vector detecting circuit and a motion video compressing system are disclosed. The detecting circuit detect a vector which direct from a spatial location of a current macroblock to a...
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5805239 |
Processor for comparing picture element blocks (blocks matching processor)
A processor is disclosed, in which a block memory (ADM), a search domain memory (SDM), a two-dimensional processor/memory cell field (PRA) and a control unit (CTRL) are preferably monolithically...
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5805223 |
Image encoding apparatus having an intrapicture encoding mode and interpicture encoding mode
An image encoding apparatus for encoding input image data using both of an intrapicture encoding mode and a motion compensation interpicture encoding mode has a refresh area setting section for...
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5805227 |
Half-pixel motion compensation controller accepting MPEG2
A half-pixel motion compensation controller accepting MPEG2 data implements a half-pixel motion compensator using a four phase division of macroblock units and a clock faster than the system clock....
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5805207 |
Moving image reproduction system providing compensation for cinematographic artifacts
A cinematographic camera is operated at three times normal frame rates and converted to digital video in a telecine operation. Motion estimation provides from the digital video motion vectors which...
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5796855 |
Polygon block matching method
A polygon block matching method includes defining a preliminary quadrilateral reference pixel block of multiple pixels about a selected reference pixel in an image object of a video image frame....
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5796434 |
System and method for performing motion estimation in the DCT domain with improved efficiency
A system and method for estimating motion vectors between frames of a video sequence which operates in the DCT domain with improved efficiency and reduced computational requirements. The motion...
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5793430 |
Method and apparatus for correcting motion vectors
Motion vectors resulting from block matching are corrected for periodic structures by taking a more reliable vector from an edge of a moving object containing the periodic structure. This is done...
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5793443 |
Motion vector detection circuit
In a motion vector detection apparatus which processes a plurality of candidate blocks of pixels defined in a search range within a reference frame, to detect a candidate block having maximum...
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5790207 |
Motion compensation method for use in an image encoding system
A method capable of improving the image quality comprises the steps of (a) detecting a motion vector for each search block in the current frame by using a block matching algorithm, (b) dividing a...
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5790206 |
Method and apparatus for global-to-local block motion estimation
Apparatus and a concomitant method for estimating motion vectors having as an input a first image frame and a second image frame, each containing a plurality of pixels representing an image. The...
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5790208 |
Apparatus for estimating frame-to-frame and field-to-field motions
The present invention relates to an apparatus for simultaneously estimating a set of frame-to-frame motions between two frames and a set of field-to-field motions between two fields. The apparatus...
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5786860 |
High speed block matching for bi-directional motion vector estimation
A high speed block matching algorithm for a bi-directional motion vector estimation, capable of improving the accuracy and the amount of computation in the bi-directional motion vector estimation...
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5786859 |
Video coding/decoding apparatus with preprocessing to form predictable coded video signal portion
A preprocessing device used in a video coding apparatus, comprising a motion compensation prediction estimating unit for detecting a change of an video from a current picture and a past picture to...
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5781239 |
System and method for performing an optimized inverse discrete cosine transform with improved efficiency
An MPEG decoder system and method an MPEG decoder system and method for decoding frames of a video sequence. The MPEG decoder includes IDCT computation logic which computes the IDCT with improved...
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5781249 |
Full or partial search block matching dependent on candidate vector prediction distortion
A motion vector detecting method determines a motion vector of a search block included in a search frame of a video signal by using motion vectors of processed neighboring blocks, wherein the...
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5777690 |
Device and method for detection of moving obstacles
A moving obstacle detecting device detects moving objects, may be applied in the field of autonomous vehicles, intelligent robots, video monitoring system and similar systems. The device includes...
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5777682 |
Motion-compensated interpolation
A method of motion-compensated interpolation of a picture signal (Pi) having input fields, comprises the steps of providing (ME) motion vectors (D) between a first and a second input field of the...
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5777681 |
Method of extracting color difference signal motion vector and a motion compensation in high definition television
A method of extracting a color difference signal, a motion vector and motion compensator in HDTV, wherein motion vectors are multiplexed to one serial motion vector in a 4 step parallel process...
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5774183 |
Method for simulating an increased shutter time in digital video
A method for processing an input digital video signal, the method comprises the steps of capturing first and second frames from the input digital video signal; determining intermediate motion...
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5771079 |
Apparatus and method for predicting pixel data of dynamic image using a half pixel pitch
An apparatus and method for predicting a plurality of pixel data using a half pixel pitch wherein the method includes the steps of arranging a plurality of reference pixel data in parallel, the...
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5767922 |
Apparatus and process for detecting scene breaks in a sequence of video frames
Apparatus and process for detecting scene breaks in a sequence of video frames providing a moving picture. Entering and exiting edge pixels in each of a plurality of successive video frames are...
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5768439 |
Image compounding method and device for connecting a plurality of adjacent images on a map without performing positional displacement at their connections boundaries
Images on a plurality of adjacent maps are accurately connected without performing positional displacement at their connecting boundaries, thereby obtaining a single seamless image. A plurality of...
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5764294 |
Image coding device to be manufactured at low cost and to be usable with low-speed memory
A video coding device has an image motion detector, an inter-frame differencer, a discrete cosine transforming unit, and a variable length coder mounted on a single LSI. The video coding device...
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5764283 |
Method and apparatus for tracking moving objects in real time using contours of the objects and feature paths
A method and apparatus for tracking moving objects, such as people, in real time by grouping existing feature paths from a current video frame with preexisting clusters from current video frames....
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5760846 |
Apparatus for estimating motion vectors for feature points of a video signal
An apparatus for determining a set of motion vectors for a set of feature points located on a contour of a moving object of a video signal comprises a contour displacement detection circuit for...
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5760845 |
Method for determining motion vectors based on a block matching motion estimation technique
A method for detecting motion vectors comprises the steps of (a) motion-estimating a search block with respect to each of the candidate blocks in a corresponding search region to produce...
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5760847 |
Processing moving image data based on an arbitrarily designated frame
Input encoded moving image data constituted by a plurality of frames including image data for at least one frame which is encoded by an intra-frame mode and image data encoded by an inter-frame...
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5757422 |
Tracking area determination apparatus and object tracking apparatus utilizing the same
An object tracking apparatus includes a motion vector detection circuit in which a correlation value for each of detection blocks are evaluated by a first correlator on the basis of a portion...
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5754234 |
Moving picture decoding system
An adder restores an image data by adding an output of a reverse DCT portion and an output of a predicted value calculating portion to output to a macro-block buffer. Data temporarily stored in the...
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5754240 |
Method and apparatus for calculating the pixel values of a block from one or two prediction blocks
A method for calculating the pixel values of a sub-pixel accuracy motion compensated block of video pixels from one or two reference blocks, as is required in typical digital video compression and...
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5751364 |
Method of and apparatus for detecting a motion of image information, method of and apparatus for encoding image information, image information transmitting system, image information recording system and recording medium
A method of detecting a motion in image information includes a step of determining differential processing data by way of full search block matching, a step of processing a differential, and a step...
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