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7339993 |
Methods for transforming streaming video data
A method for forming an output stream of data includes determining an output resolution for the output stream of data, determining an output frame rate for the output stream of data, determining an...
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7333865 |
Aligning data streams
The invention aligns two wide-bandwidth, high resolution data streams, in a manner that retains the full bandwidth of the data streams, by using magnitude-only spectrograms as inputs into the...
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7324436 |
Determining useable combinations of variables for transmitting a subpacket of an encoder packet
A method of determining useable combinations of variables for transmitting a subpacket of an encoder packet in a communication system is disclosed. First, an arbitrary combination from a plurality...
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7310370 |
Multi-layer video compression system with synthetic high frequencies
Multi-layered motion or still video compression includes, in an encoder or encoding function aspect of the invention, separating the video signal into low-frequency and high-frequency components,...
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7302001 |
Random access points in video encoding
In a method of encoding/decoding a video sequence, which is composed of video frames, at least one video frame is divided into a set of coding blocks, and at least one of the coding blocks is...
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7236522 |
Surveillance system and image signal processing apparatus
Herein disclosed is a surveillance system, comprises: a plurality of imaging units for respectively taking images of specific objects to transform the images into image signals; a plurality of...
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7212576 |
Picture encoding method and apparatus and picture decoding method and apparatus
A picture encoding method includes receiving an input video signal, encoding the video signal using a reference picture signal to generate a video code stream, encoding the reference picture signal...
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7206352 |
ATSC digital television system
This disclosure describes a flexible digital transmission system that improves upon the ATSC A/53 HDTV signal transmission standard. The system includes a digital television signal transmitter for...
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7206345 |
Method of decoding coded video signals
The invention relates to a video decoding method for decoding a set of video signals comprising a base layer signal and at least one enhancement layer signal and for supplying a decoded output...
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7197073 |
Compact MPEG data processing circuit and method of controlling the same
In an MPEG data processing circuit, inputted MPEG system stream is divided into a data block to be processed (for example, video elementary data portion) and a data block to be not processed (for...
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7181079 |
Time signal analysis and derivation of scale factors
Analyzing an analysis time signal that has been generated from encoding and decoding and original time signal according to an encoding algorithm. The encoding block raster underlying the analysis...
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7133449 |
Apparatus and method for conserving memory in a fine granularity scalability coding system
Decoding time stamps (DTSs) and presentation time stamps (PTSs) are used in fine granularity scalability (FGS) coding during MPEG-4 video coding. An input video is encoded in an FGS encoder into a...
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7110860 |
Image transmission device and method, transmitting device and method, receiving device and method, and robot apparatus
An image transmission device and method, a transmitting device and method, a receiving device and method, and robot apparatus are capable effectively transmitting the image data of multiple...
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7050496 |
Multi-channel image encoding method and system
A method and apparatus for encoding multi-channel video signals is disclosed. In order for multiple of input channels to share hardware resources, one input channel is selected and multi-channel...
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7042944 |
Single-loop motion-compensation fine granular scalability
A video coding technique having motion compensation for bi-directional predicted frames (B-frames) and predicted frames (P-frames). The video coding technique involves a single-loop...
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7031404 |
Inverse DWT method and apparatus
A method for performing an Inverse Discrete Wavelet Transform is disclosed. The method comprises inverse transforming, using filters ( 706–710 ) having specified filter widths, data from...
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7016412 |
System and method for dynamic adaptive decoding of scalable video to balance CPU load
There is disclosed an apparatus for controlling the processing load of a scalable video decoder that decodes an incoming scalable video bit stream and generates a baseband video signal. The...
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7010037 |
System and method for rate-distortion optimized data partitioning for video coding using backward adaptation
A system and method are disclosed that provide a simple and efficient layered video coding technique using a backward adaptive rate-distortion optimized data partitioning (RD-DP) of DCT...
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6996173 |
Seamless switching of scalable video bitstreams
A seamless bitstream switching schema is presented. The schema takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small...
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6996172 |
Method and structure for scalability type selection in digital video
A scalability type selection method and structure for hybrid SNR-temporal scalability that employs a decision mechanism capable of selecting between SNR and temporal scalability based upon desired...
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6993076 |
Apparatus and method for deriving an enhanced decoded reduced-resolution video signal from a coded high-definition video signal
An improved image processing system involves decoding compressed image data including frequency domain coefficients defining blocks of pixel values representing an image at a first resolution to...
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6985526 |
SNR scalable video encoding method and corresponding decoding method
The invention relates to scalable video encoders, and, more precisely, to an encoder comprising a base layer and at least an enhancement layer circuit, said circuits being capable of generating...
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6983015 |
Signal processor
Decoders A and B decode MPEG-2 bitstreams A and B. A switch (S 1 ) switches from decoded stream A to decoded stream B to achieve a splice. The resulting bitstream is re-encoded in an encoder 4 . A...
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6925501 |
Multi-rate transcoder for digital streams
Methods and apparatus are provided to produce a plurality of different rate output bitstreams from a common input bit stream. Overhead data is extracted from the input bit stream. The input bit...
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6904092 |
Minimizing drift in motion-compensation fine granular scalable structures
A method and apparatus for minimizing prediction drift at low bitrates in a fine granular scalable video coding scheme that utilizes motion compensation in an enhancement layer. The method and...
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6853318 |
Digital image compression utilizing shrinkage of subband coefficients
In compressions of digital images having a plurality of initial pixels, an image type and a quantization step-size set preassigned to the image type, are associated with a respective coordinate of...
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6829303 |
Methods and apparatus for decoding images using dedicated hardware circuitry and a programmable processor
Video decoder methods and apparatus are described. In accordance with the invention, hardware decoder circuitry, e.g., intra-coded image decoding circuitry and motion vector reconstruction...
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6804300 |
Television audiovisual, recording and reproducing apparatus using personal computer, method of supplying power to PC card, and PC card
A television audiovisual apparatus using a personal computer comprises an audio/video I/O interface including a television tuner, disposed in the personal computer, and an information...
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6798977 |
Image data encoding and decoding using plural different encoding circuits
In an image processing apparatus and method, a plurality of objects are separated from input moving image data. The separated first object is encoded by a first encoding method. The separated...
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6792045 |
Image signal transcoder capable of bit stream transformation suppressing deterioration of picture quality
An MPEG2 decoder portion decodes an input bit stream and outputs a digital decoded image while extracting coding information and supplying the same to a control portion. An MPEG2 encoder portion...
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6788740 |
System and method for encoding and decoding enhancement layer data using base layer quantization data
There is disclosed a video encoder comprising a base layer encoder and an enhancement layer encoder. The base layer encoder receives an input stream of video frames and generates compressed base...
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6765966 |
Methods and apparatus for re-encoding a high definition television signal to create a standard definition television signal
A method and apparatus for detecting a high definition television signal (e.g., a high definition MPEG2 data stream) and re-encoding the high definition signal to create a standard definition...
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6757328 |
Motion information extraction system
A method, an apparatus, and a computer program product for extracting motion information ( 110 ) from a video sequence ( 130, 600 ) containing interframe motion vectors ( 120 ) are disclosed. In...
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6731809 |
Moving picture data compression device
A moving picture data compression device 1 is provided with a controller 20 for inputting a realtime/non-realtime switch signal to switchers 30 and 40 when a realtime/non-realtime switch...
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6693960 |
Moving picture encoder and moving picture decoder
When a background interpolation-judging section 107 judges that parts areas of a lower layer and an upper layer move significantly, and a visual effect can be obtained by the background...
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6678326 |
Motion picture coding and decoding apparatus
A motion picture coding and decoding apparatus synthesizes a lower layer frame at a certain time by using first component area information of a lower layer preceding in the time and second...
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6671412 |
Motion image coding apparatus for performing hierarchical coding
An image coding apparatus inputs pixel data of a part image of high resolution. An upper layer coding portion ( 101 ), a second shape data generating portion ( 102 ), and a second shape data coding...
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6661841 |
Scalable video coding system
A system for coding video data comprised of one or more frames codes a portion of the video data using a frame-prediction coding technique, and generates residual images based on the video data and...
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6621865 |
Method and system for encoding and decoding moving and still pictures
A multi-dimensionally layered encoding and decoding system having reduced the bandwidth requirements for a channel that carries an image stream encoded by the system. A source image stream is...
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6614935 |
Two-pass encoding method of digital motion video sequences for constant-or variable bit rate
Systems and methods are provided for for encoding units of digital information such as pictures, whereby all the data is first analyzed by running a compression pass over all the data, using the in...
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6597814 |
Image coding for transmitting information of shape, pixel value, and coding modes
It is an object to encode an image signal or a shape signal more efficiently than the prior art. As a means to accomplish the object, the change pixel detector 2 receives the input signal 1 as...
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6574367 |
Method and apparatus for pattern matching encoding
An apparatus for pattern matching encoding includes a pattern extracting unit for extracting patterns in input binary or multi-level image data, an accumulating/match-checking unit for accumulating...
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6574279 |
Video transcoding using syntactic and semantic clues
A method for transcoding a compressed video partitions the compressed video into hierarchical levels, and extracts features from each of the hierarchical levels. One of a number of conversion modes...
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6574276 |
Video coding method and corresponding video coder
The invention relates to a video coding method based on an adaptive frame/field encoding mode. In order to avoid an impairment of the image quality and of the compression efficiency when a video...
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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...
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6563874 |
Fast search method for motion estimation
A video compression method of estimating a motion vector representative of a difference between a reference frame and a current frame is described. Typically, both the reference frame and the...
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6560283 |
Re-encoding decoded signals
If a signal is repeatedly encoded and decoded, coding noise generally accumulates as it passes through the various coding systems. The present system provides means for preventing this, by...
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6546142 |
Motion image coding apparatus for performing hierarchical coding
An image coding apparatus inputs pixel data of a part image of high resolution. An upper layer coding portion ( 101 ), a second shape data generating portion ( 102 ), and a second shape data coding...
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6535557 |
Method and apparatus for coding moving picture image
In a method for coding a moving picture image, in which the moving picture image is coded into a digital moving picture stream when the moving picture image is transmitted via a network, the moving...
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6510177 |
System and method for layered video coding enhancement
A system and a method for encoding, transmitting, decoding and storing a high-resolution video sequence using a low-resolution base layer and a higher-resolution enhancement layer. The base layer...
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