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7612909 |
Image processing apparatus and method, and image-capturing apparatus based on the difference between a signal detected by a sensor and the real world
An apparatus for detecting a mixed area in frames. An object extracting unit extracts a foreground object from an input image and generates an area-specified object formed of the foreground object...
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7236634 |
Image encoding of moving pictures
In an encoding method of moving pictures which generates a predictive picture for a current picture based on a reference picture and a motion vector, a macroblock is divided into subblocks. In each...
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7116283 |
Methods and apparatus for improved display of visual data for point of sale terminals
Improved techniques for transmission and display of video data are described. A point of sale terminal includes a processor, memory and software executed by the processor to create frames of data...
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7103554 |
Method and device for generating a data flow from variable-length code words and a method and device for reading a data flow from variable-length code words
In a method for producing a data stream of code words of variable lengths which are divided up into a plurality of sets of code words, wherein a raster having segments is specified for the data...
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7072366 |
Method for scalable encoding of media streams, a scalable encoder and a terminal
A scalable encoder ( 100 ) for encoding a media signal is described. It comprises first encoding means ( 210 ) for producing a first data stream ( 102 ), which is a core data stream relating to the...
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6993102 |
System and method for clock synchronization for USB sink device
In a method for adaptive synchronization of a data sink device to a data source device coupled by a USB, data is received and stored in a buffer of the sink device at an average data rate...
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6850567 |
Embedding supplemental data in a digital video signal
An MPEG-encoded video signal includes groups of pictures (GOPs), each GOP having an intraframe coded (I) picture and a series of predictively encoded (P) pictures and bidirectionally predictively...
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6654483 |
Motion detection using normal optical flow
A system and method allow for the detection, segmentation and analysis of regions of motion. The system and method use a motion history image generated by observing an object over a given period of...
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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....
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6542639 |
Region extraction apparatus, region extraction method and computer readable recording medium
A region extraction apparatus for extracting a desired region from a moving image, includes a region specifying unit for specifying contour points of a region which is to be extracted, a template...
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6519005 |
Method of concurrent multiple-mode motion estimation for digital video
A method for motion coding an uncompressed digital video data stream such as an MPEG-2 digital video data stream. The method includes the steps of comparing pixels of a first pixel array in a...
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6456656 |
Method and apparatus for coding and for decoding a picture sequence
Motion-compensated hybrid codecs are used in data compression for moving picture sequences. By virtue of the regular insertion of intraframe-coded pictures, these compression methods enable access...
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6434196 |
Method and apparatus for encoding video information
A method and apparatus for encoding, illustratively, a video information stream to produce an encoded information stream according to a group of frames (GOF) information structure where the GOF...
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6434271 |
Technique for locating objects within an image
A technique for locating objects within an image is disclosed. In one embodiment, the technique is realized by obtaining an image and then identifying an object within the image based upon an...
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6353680 |
Method and apparatus for providing image and video coding with iterative post-processing using a variable image model parameter
The present invention is an apparatus that comprises a memory including one or more instructions and a processor coupled to the memory. In response to the one or more instructions, the processor...
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6347115 |
Method and system for predictive coding of images treated with the Roberts Method
The method and system of this invention predictively encodes and decodes an image signal that has been treated with the Roberts Method. The method and system generates a noise signal that is...
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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...
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6198849 |
Process for producing and evaluating a video data stream for video transmission
A method for generating a stream of image data which is to be transmitted via a data channel, in particular a mobile radio channel. In this method, the images are divided into a quantity of...
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6148032 |
Methods and apparatus for reducing the cost of video decoders
Methods and apparatus for implementing video decoders at a reduced cost are described. The methods include data reduction techniques, simplified inverse quantization techniques, and dynamically...
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5966183 |
Signal converter and signal conversion method
The present invention relates to a signal converter and a signal conversion method in which an interpolated image is formed on the basis of suitable classification according to features of an input...
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5953064 |
Image signal encoding system capable of correctly encoding an editing image signal before and after switching time points of selection of input dynamic image signals
An image signal encoding system which is capable of correctly encoding an editing image signal before and after switching points of a first input dynamic image signal and a second input dynamic...
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5940145 |
Method and apparatus for motion compensated image processing using two separate motion measurement techniques
Motion compensated image processing is performed by producing vectors assigned to elementary areas of video fields. These are produced from at least two video fields in a sequence. A first...
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5912708 |
Picture signal encoding device, picture signal encoding method, picture signal decoding device, picture signal decoding method, and recording medium
In the present invention, a virtual pixel (indicated by ⌾ in FIG. 18) is assumed near an SD pixel (indicated by .smallcircle.0 in FIG. 18) constituting an SD picture obtained by thinning an HD...
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5901160 |
Decoder with an error control adaptively applied on the basis of the estimated position of a slot in a frame
A decoder which is adapted to receive a frame of coded data consisting of multiple slots including intra-frame position information indicating positions of the slots in the frame to decode the...
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5870148 |
Method and apparatus for adaptively enabling and disabling PB frames in an H.263 video coder
A method and apparatus for adaptively enabling a PB frames mode for video data processing. If the PB frames mode is enabled for a given pair of video pictures, and if the motion compensated...
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5870147 |
Predictive video signal coding and decoding with suppression of low frequencies
In a predictive coding apparatus, an interframe/interfield predictive signal is generated in which low frequency components are depressed. A predictive error signal is generated on the basis of an...
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5867231 |
Method and apparatus for decoding video signal
A method for decoding a video signal in which the decoding operation is completed within a predetermined time irrespective of the presence of an error which is generated on a bit strings. In the...
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5854856 |
Content based video compression system
A content based method of compressing a segment of video is implemented in two stages. In a spatial integration stage, figures are represented in terms of compact models. In a temporal integration...
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5838376 |
Video coder/decoder which separately processes high and low frequencies
In a predictive coding apparatus, an interframe/interfield predictive signal is generated in which low frequency components are depressed. A predictive error signal is generated on the basis of an...
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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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5787199 |
Apparatus for detecting a foreground region for use in a low bit-rate image signal encoder
An apparatus, for use in a low bit-rate image signal encoder, for detecting a foreground region in an image signal, wherein the image signal has a number of objects therein and the foreground...
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5778098 |
Sprite coding
Sprite-defined objects are completely defined throughout the video sequence as of their first appearance by a "sprite" and one or more trajectories. The sprite includes all the image...
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5734431 |
Video coding and decoding apparatus including corresponding nonlinear compression and expansion of a motion compensation error signal
A video coding apparatus includes a motion compensation circuit for motion-compensating a picture signal in a frame previous to a frame of video signals input for each frame, and generating a...
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5729302 |
Method and apparatus for detecting motion vectors of pixel blocks of a digitized video signal
A motion detector and a motion area detector detect shifts of areas at which motions exist by using signals of fields before and after the field to be detected. According to shifts of the detected...
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5724098 |
Interframe coding method and apparatus utilizing a filter controller and an adaptive filter
An interframe coding system which eliminates higher frequency components contained in an image signal effectively and adaptively with an adaptive filter provided in a coding loop. The adaptive...
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5721544 |
Encoding method
In an encoding method for a system for dividing image data into blocks each consisting of a plurality of pixels, encoding the image data in units of blocks, and performing image transmission or...
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5719628 |
Video signal coding method and apparatus
An efficient coding system for interlaced video sequences with forced refreshing capabilities. An input picture of is divided into two fields, a first and a second field. Certain lines or portions...
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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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5706367 |
Transmitter and receiver for separating a digital video signal into a background plane and a plurality of motion planes
A transmitter which allows to reproduce a high quality and smooth dynamic image on the receiving side even with a transmission medium having a low transmission rate is provided. Background plane...
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5689589 |
Data compression for palettized video images
A data compression system uses sameness information, such as temporal sameness of corresponding pixels, in the coding process. Two sets of contexts are used, one set when a pixel is the same as a...
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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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5646691 |
System and method for inter-frame prediction of picture by vector-interpolatory motion-compensation based on motion vectors determined at representative points correctable in position for adaptation to image contours
Representative points vicinal to a detected contour line of an image-segmented input picture are corrected in position so that lattice links connecting the representative points extend along the...
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5621794 |
Moving-picture encipherment method and system, and enciphered moving-picture decipherment method and system
Moving-picture data in a frame is encoded without depending on another frame of moving-picture data, and moving-picture data in a frame is encoded depending on another frame of moving-picture data....
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5614960 |
Image data encoding method and device, image data reconstructing method and device, scene change detecting method and device, scene change recording device, and image data scene change record/regenerating device
An encoding unit encodes the received image data in frame units. A code buffer stores the amount of codes per 1 frame. The detection condition setting unit sets a detection condition (a standard...
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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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5561476 |
Motion detection method and apparatus
Display standards in common use for the display of computer or television images on high resolution displays, commonly assume that the output image will be displayed on an output device having a...
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5519790 |
Method for reducing noise in digital video information
A method for reducing noise in digital video information is provided which includes the use of key frames, whereby pixel values for a key frame replace the corresponding pixel values for...
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5509089 |
Method and system for encoding images using temporal filtering
An image having a plurality of image pixels and a reference image having a plurality of reference image pixels are provided. A plurality of difference values are generated as a function of the...
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5508949 |
Fast subband filtering in digital signal coding
A coding system for data compression and decompression of a digitized source signal, for example in accordance with the MPEG audio standard, includes an analysis filter in which an inverse discrete...
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RE35158 |
Apparatus for adaptive inter-frame predictive encoding of video signal
An adaptive predictive encoding apparatus for encoding a video signal by utilizing correlation between frames in both the forward and reverse directions of the time axis. A prediction signal for...
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