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470 results about "Prediction residual" patented technology
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Residual prediction is a technique that aims at recovering the spectral details of speech that was encoded using parameterizations as linear predictive coefficients. Example applications of residual prediction are hidden Markov model-based speech synthesis or voice conversion.
Method and system for inter-layer prediction mode coding in scalable video coding
InactiveUS20060153295A1Eliminate redundancyImproving inter-layer prediction modeColor television with pulse code modulationColor television with bandwidth reductionComputer architectureInter layer
The present invention improves residue prediction by using MI even when the base layer MB is encoded in intra mode such as copying intra 4×4 mode of one 4×4 block in the base layer to multiple neighboring 4×4 blocks in the enhancement layer if the base layer resolution is lower than the enhancement layer resolution, using the intra 4×4 mode as intra 8×8 mode if the base layer resolution is lower than the enhancement layer resolution and the base layer resolution is half of the enhancement layer resolution in both dimensions, carrying out direct calculation of the base layer prediction residue used in RP, clipping of prediction residue for reducing memory requirement and tunneling of prediction residue in BLTP mode; and conditional coding of RP flag to save flag bits and reduce implementation complexity
Owner:NOKIA CORP
Picture coding supporting block merging and skip mode
ActiveUS20130279577A1Saves bit rateIncrease overheadColor television with pulse code modulationColor television with bandwidth reductionCurrent sampleAlgorithm
A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may signalize whether the coding parameters associated with a current sample set are to be set according to a merge candidate or to be retrieved from the bitstream, and whether the current sample set of the picture is to be reconstructed based on a prediction signal depending on the coding parameters associated with the current sample set, without any residual data, or to be reconstructed by refining the prediction signal depending on the coding parameters associated with the current sample set by means of residual data within the bitstream.
Owner:GE VIDEO COMPRESSION LLC
Quality scalable coding
ActiveUS20100020866A1Effective wayHigh bit-depthColor television with pulse code modulationColor television with bandwidth reductionPattern recognitionData stream
A more efficient way of addressing different bit-depths, or different bit-depths and chroma sampling format requirements is achieved by using a low bit-depth and / or low-chroma resolution representation for providing a respective base layer data stream representing this low bit-depth and / or low-chroma resolution representation as well as for providing a higher bit-depth and / or higher chroma resolution representation so that a respective prediction residual may be encoded in order to obtain a higher bit-depth and / or higher chroma resolution representation. By this measure, an encoder is enabled to store a base-quality representation of a picture or a video sequence, which can be decoded by any legacy decoder or video decoder, together with an enhancement signal for higher bit-depth and / or reduced chroma sub-sampling, which may be ignored by legacy decoders or video decoders.
Owner:GE VIDEO COMPRESSION LLC
Method and apparatus for multi-layered video encoding and decoding
InactiveUS20060120450A1Improve coding efficiencyImprove efficiencyColor television with pulse code modulationSewerage structuresVideo encodingCompression method
A video compression method, and more particularly, a prediction method for efficiently eliminating redundancy within a video frame, and a video compression method and an apparatus using the prediction method are provided. There is provided a method for encoding video based on a multi-layer structure, including performing intra-prediction on a current intra-block using images of neighboring intra-blocks of the current intra-block to obtain a prediction residual, performing prediction on the current intra-block using an image of a lower layer region corresponding to the current intra-block to obtain a prediction residual, selecting one of the two prediction residuals that offers higher coding efficiency, and encoding the selected prediction residual.
Owner:SAMSUNG ELECTRONICS CO LTD
Image encoding and decoding method and apparatus
InactiveUS20090310677A1High encoding efficiencyHigh decodingColor television with pulse code modulationColor television with bandwidth reductionPrediction residualEncoder
An image encoding apparatus includes a first selector selecting a prediction-order to sub-blocks obtained by further dividing pixel-blocks obtained by dividing a frame of an input-image-signal from predetermined prediction-orders, a second selector selecting, from prediction-modes regulating a manner of referring to an encoded-pixel when a first-prediction-signal of each-sub-block is generated with reference to the encoded-pixel, the number of prediction-modes used in prediction of the first-prediction-signal, a third selector selecting prediction-modes the number of which is the selected number from prediction-modes to use the prediction-modes in prediction of the first-prediction-signal, a generator generating the first-prediction-signal in the selected prediction order by using the selected prediction-modes the number of which is the selected number to generate a second-prediction-signal corresponding to the pixelblock, and an encoder encoding a prediction-residual-error-signal expressing a difference between an image-signal of the pixel-block and the second-prediction-signal to generate encoded data obtained by the prediction-encoding.
Owner:KK TOSHIBA
Lossless image encoding/decoding method and apparatus using inter-color plane prediction
InactiveUS20050013370A1Improve compression efficiencyPicture reproducers using cathode ray tubesCode conversionColor image codingLossless image coding
A lossless image encoding / decoding method and apparatus. The lossless color image encoding apparatus includes a motion prediction image generator estimating a motion between a previous image and a current image and outputting a corresponding prediction image, a residue generator generating a temporal residue corresponding to a difference between a prediction image generated by the motion prediction image generator and the corresponding block of the current image with respect to different components of the color image, a prediction residue generator generating prediction residues by defining a linear-transformed value of one residue among the different components of the color image output from the residue generator as a predictor and using differences between each of the residues of the other components and the predictor, and an entropy encoder receiving the residue forming the predictor from the residue generator and the prediction residues from the prediction residue generator and generating a bitstream. Encoding methods, decoding apparatuses, and decoding methods can be implemented similarly.
Owner:SAMSUNG ELECTRONICS CO LTD
Moving picture encoding/transmission system, moving picture encoding/transmission method, and encoding apparatus, decoding apparatus, encoding method decoding method and program usable for the same
ActiveUS20040233989A1Inhibit deteriorationColor television with pulse code modulationColor television with bandwidth reductionSignal correlationIntra-frame
An object of the present invention is to allow portions which are subjected to a coding in inter-frame prediction mode and portions which are subjected to coding in intra-frame prediction mode to be mixed in one macro block without changing the framework of macro blocks. The present invention provides an encoder which encodes each of first image blocks of a video. The encoder includes prediction mode selection information generating means for generating prediction mode selection information which indicates that a first prediction mode for reducing temporal redundancy is applied to each of second image blocks or that a second prediction mode for reducing spatial redundancy is applied to each of the second image blocks. The second image blocks are obtained by dividing the first image blocks. The encoder includes predictive residual signal generating means for generating a predictive residual signal by applying the selected first or second prediction mode to each of the second image blocks. The encoder includes transmitting means for transmitting the prediction mode selection information in association with the predictive residual signal.
Owner:NTT DOCOMO INC
Method and apparatus for encoding and decoding image
InactiveUS20100118943A1Reduce errorsImprove efficiencyColor television with pulse code modulationColor television with bandwidth reductionPattern recognitionImage signal
An image encoding apparatus includes a multidirectional predicting unit configured to predict a plurality of pixel blocks by using an encoded pixel as a reference pixel according to a plurality of prediction modes having different prediction directions to generate a plurality of first prediction signals corresponding to the pixel blocks obtained by dividing a frame of an input image signal a setting unit configured to set a weighting factor depending on the prediction directions of the plurality of prediction modes and a spatial distance between a prediction pixel in the pixel block and the reference pixel, a weighted average unit configured to calculate a weighted average of the plurality of first prediction signals according to the weighting factor to generate one second prediction signal corresponding to the pixel blocks, and an encoding unit configured to encode a prediction residual error signal representing a difference between an image signal of the pixel block and at least the second prediction signal to generate encoded data.
Owner:KK TOSHIBA
Scalable video coding supporting pixel value refinement scalability
ActiveUS20100260260A1Improve rate-distortion performanceReduce complexityColor television with pulse code modulationColor television with bandwidth reductionVideo encodingAlgorithm
A more efficient way of enabling scalability in terms of pixel value resolution is achieved by temporally predicting a first and a second representation of a video material separately to each other with the first representation being of a lower pixel value resolution than the second representation, with mapping the first prediction residual or a reconstructed version thereof from the first pixel value resolution to the second pixel value resolution dependent on the second prediction signal obtained from temporally predicting the second representation, and by coding a second prediction residual being of the second pixel value resolution as representing a deviation between a combination of the second and third prediction signals and the second representation.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
Video image encoding method, video image encoder, and video image encoding program
InactiveUS20060104527A1Better encoding efficiencyLess image quality degradationCharacter and pattern recognitionDigital video signal modificationPattern recognitionVideo image
A method for encoding a video image includes: generating a prediction image for each of a plurality of pixel blocks that are divided from an input image into a predetermined size, and generating a prediction residual signal that indicates prediction residual between the prediction image and each of the pixel blocks, for each of a plurality of prediction modes; obtaining an orthogonal transformation coefficient by performing orthogonal transformation to the prediction residual signal corresponding to each of the prediction modes; selecting a target prediction mode from among the prediction modes based on a number of the orthogonal transformation coefficients that become non-zero as a quantization processing is performed; encoding each of the pixel blocks in the target prediction mode respectively selected.
Owner:KK TOSHIBA
Self-adaptively dividing method for code units in high-efficiency video coding
InactiveCN101938657AImprove compression efficiencyEffective reflectionTelevision systemsDigital video signal modificationComputer architectureRate distortion
The invention discloses a self-adaption dividing method for code units in high-efficiency video coding, which mainly solves the problems that a largest code unit and a smallest code unit in the division of the code units in the prior art can not be regulated according to the characteristics of video content, and the dividing mode quantity of blocks on the boundary of a video frame is few. The method comprises the steps of: firstly, adopting the rate distortion rule or the relativity among video frames to self-adaptively determine the largest code unit and the smallest code unit in each video frame; secondly, expanding a rectangular block within the video frame in the largest code unit on the boundary of a video frame into a square block, and dividing the square block; then, marking the rectangular blocks after dividing, and carrying out frame prediction to the rectangular blocks after dividing; and finally, transforming, quantizing and entropy coding to prediction residuals. The invention has the advantage of high video compression efficiency, and can be applied to high-performance video coding standards.
Owner:XIDIAN UNIV
Video data conversion device and video data conversion method
InactiveUS20050041740A1Color television with pulse code modulationColor television with bandwidth reductionMotion vectorVariable length
In an MPEG-2 decoder (2), a variable length decoder (2A) carries out syntax analysis of input compression data (1) according to the MPEG-2 standard, and generates coding mode information (3), motion vector information (4) and prediction residual signal (2B). The prediction residual signal (2B) is transformed to a decoded picture (5) through a dequantizer (2C) and the like, and is supplied to an MPEG-4 encoder (10) via a resolution converter (6). In the MPEG-4 encoder (10), a coding parameter deciding section (10B) decides a motion vector according to a prediction error estimation value for evaluating a prediction efficiency when using a motion vector candidate generated by a motion vector mapping section (7), and according to a value for evaluating a motion vector rate when using the motion vector candidate.
Owner:MITSUBISHI ELECTRIC CORP
Method and apparatus for update step in video coding using motion compensated temporal filtering
InactiveCN101213842ASimplify the interpolation processEliminate the need to update the motion vector derivation processTelevision systemsDigital video signal modificationCoding blockTime domain
Owner:NOKIA CORP
Reduced resolution update mode for advanced video coding
InactiveUS20070189392A1Color television with pulse code modulationColor television with bandwidth reductionPattern recognitionImage resolution
There is provided a video encoder, video decoder and corresponding encoding and decoding methods for respectively encoding and decoding video signal data for an image slice. The video encoder includes a slice prediction residual downsampler for downsampling a prediction residual of at least a portion of the image slice prior to transformation and quantization of the prediction residual. The video decoder includes a prediction residual upsampler for upsampling a prediction residual of the image slice.
Owner:THOMSON RES FUNDING
Moving picture coding method and moving picture coding apparatus
InactiveUS20050157784A1High processing loadFavorable modeColor television with pulse code modulationColor television with bandwidth reductionComputer architecturePrediction residual
In an embodiment of the invention, a method for coding a moving picture comprises: dividing an inputted picture signal into fractionized signals respectively corresponding a plurality of pixel blocks; generating a prediction signal and coding mode information from each of said fractionized signals, for each coding mode; generating a prediction residual signal, from the prediction signal and said each of fractionized signals; estimating a first-estimate coding cost that is for coding the prediction residual signals for said each coding mode, from the prediction residual signals and the coding mode information; determining a candidates' number in accordance with step width of quantizing; selecting the coding modes having smallest ones of the first-estimate coding costs as candidates; estimating a second-estimate coding cost by coding the inputted signal and thereby finding a coding distortion and a code amount; and employing one coding mode from the candidates on basis of the second-estimate coding cost.
Owner:KK TOSHIBA
Method and system for motion compensated fine granularity scalable video coding with drift control
InactiveUS20070014348A1Improve encoding performanceImprove efficiencyColor television with pulse code modulationColor television with bandwidth reductionGranularitySelf adaptive
An adaptively formed reference block is used for coding a block in a current frame in the enhancement layer. In particular, the reference block is formed from a reference block in base layer reconstructed frame and a reference block in the enhancement layer reference frame together with a base layer reconstructed prediction residual block. Furthermore, the reference block for coding is adjusted depending on the transform coefficients of the base layer reconstructed residual layer. Moreover, the actual reference signal used for coding is a weighted average of a reference signal from the reconstructed frame in the base layer and a reference signal from the enhancement layer reference frame together with a base layer reconstruction prediction residual.
Owner:NOKIA CORP
Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction
ActiveUS20130030819A1Reduce complexityImprove audio qualityPulse modulation television signal transmissionSpeech analysisFrequency spectrumData stream
An encoder, based on a combination of two audio channels, obtains a first combination signal as a mid-signal and a residual signal derivable using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded and written into a data stream together with the prediction information. A decoder generates decoded first and second channel signals using the prediction residual signal, the first combination signal and the prediction information. A real-to-imaginary transform may be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV +1
Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction
ActiveUS8655670B2Quality improvementLittle overheadPulse modulation television signal transmissionSpeech analysisData streamFrequency spectrum
An encoder, based on a combination of two audio channels, obtains a first combination signal as a mid-signal and a residual signal derivable using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded and written into a data stream together with the prediction information. A decoder generates decoded first and second channel signals using the prediction residual signal, the first combination signal and the prediction information. A real-to-imaginary transform may be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV +1
Method and System for Optimizing Industrial Furnaces (Boilers) through the Application of Recursive Partitioning (Decision Tree) and Similar Algorithms Applied to Historical Operational and Performance Data
InactiveUS20090125155A1Improve efficiencyMechanical power/torque controlLevel controlPrediction algorithmsNaive Bayes classifier
A method is provided for deriving optimized operating parameter settings for industrial furnaces of different designs as commonly used in power generation that will achieve robust and desirable operations (for example, low NOx and low CO emissions while maintaining specific furnace exit gas temperatures). The method includes the application of recursive partitioning algorithms to historical process data to identify critical combinations of ranges of operational parameter (combinations of settings) that will result in robust (low-variability) desirable (optimized) boiler performance, based on empirical evidence in the historical data. The method may include the application of various algorithms for recursive partitioning of data, as well as the consecutive application of recursive partitioning methods to prediction residuals of previous models (a methodology also known as boosting), as well as the application of other prediction algorithms that rely on the partitioning of data (support vector machines, naive Bayes classifiers, k-nearest neighbor methods).
Owner:HILL THOMAS +1
Method and device for encoding and decoding videos
ActiveUS20120201303A1Encoding efficiency can be improvedImprove efficiencyColor television with pulse code modulationColor television with bandwidth reductionPattern recognitionVideo encoding
The embodiments of the present invention provide a method and a device for encoding and decoding videos, and relate to the communication field, and an efficient transformation matrix corresponding to features of each residual block is selected for transformation, which therefore improves encoding efficiency. The solution provided in an embodiment of the present invention is: generating a prediction residual according to input video data; selecting a set of best transformation matrixes among multiple candidate transformation matrixes according to an intra-frame prediction mode and rate-distortion criteria to perform transform-coding on the prediction residual and obtain a transformation result; and generating an encoded stream according to the transformation result and selected transformation matrix index information.
Owner:HUAWEI TECH CO LTD
Method And Apparatus For Complexity Scalable Video Decoder
ActiveUS20070211798A1Color television with pulse code modulationColor television with bandwidth reductionVideo bitstreamMotion vector
A video decoder, a video decoding method, a video encoder and a video encoding method are disclosed. A video decoder for decoding a video bitstream for an image block includes a motion vector resolution reducer and a motion compensator. The motion vector resolution reducer is for receiving decoded high resolution motion vectors included in the video bitstream and for reducing an accuracy of the high resolution motion vectors to correspond to a low resolution. The motion compensator, in signal communication with the motion vector resolution reducer, is for forming a motion compensated high resolution prediction using the reduced accuracy motion vectors. The video encoder for encoding scalable video comprises a motion compensator for forming a motion compensated full resolution prediction and combining the motion compensated full resolution prediction from an image block to form a prediction residual. The prediction residual is downsampled to form a low resolution downsampled prediction residual and then coded.
Owner:INTERDIGITAL MADISON PATENT HLDG
Method for Selecting Transform Types From Mapping Table for Prediction Modes
InactiveUS20130003828A1Color television with pulse code modulationPulse modulation television signal transmissionData miningData application
A method codes pictures in a bitstream, wherein the bitstream includes coded pictures to obtain data for associated TUs and data for generating a transform tree, and a partitioning of coding units (CUs) into Prediction Units (PUs), and data for obtaining prediction modes or directions associated with each PU. One or more mapping tables are defined, wherein each row of each table has an associated index and a first set of transform types to be used for applying an inverse transformation to the data in TU. The first set of transform types is selected according to an index, and then a second set of transform types is applied as the inverse transformation to the data, wherein the second set of transform types is determined according to the first set of transform types and a transform-toggle flag (ttf) to obtain a reconstructed prediction residual.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Residual prediction mode in scalable video coding
InactiveUS20070014349A1Color television with pulse code modulationColor television with bandwidth reductionVideo encodingComputer science
Methods, devices, and computer code products for encoding and decoding a video signal including conditional encoding and decoding of a residual prediction flag for an enhancement layer only of all base layers are discrete layers. If some base layers are not discrete, the residual prediction flag is always encoded and decoded. Encoding and decoding the residual prediction flag can include using contexts which depend on whether the reconstructed prediction residual of the discrete base layers is zero or not.
Owner:NOKIA CORP
Complexity Scalable Video Encoding
ActiveUS20080304567A1Color television with pulse code modulationColor television with bandwidth reductionVideo bitstreamMotion vector
A video decoder, a video decoding method, a video encoder and a video encoding method are disclosed. A video decoder for decoding a video bitstream for an image block includes a motion vector resolution reducer and a motion compensator. The motion vector resolution reducer is for receiving decoded high resolution motion vectors included in the video bitstream and for reducing an accuracy of the high resolution motion vectors to correspond to a low resolution. The motion compensator, in signal communication with the motion vector resolution reducer, is for forming a motion compensated high resolution prediction using the reduced accuracy motion vectors. The video encoder for encoding scalable video comprises a motion compensator for forming a motion compensated full resolution prediction and combining combining the motion compensated full resolution prediction from an image block to form a prediction residual. The prediction residual is downsampled to form a low resolution downsampled prediction residual and then coded.
Owner:INTERDIGITAL MADISON PATENT HLDG
Image encoder, image decoder, image encoding method, and image decoding method
InactiveUS7747094B2Improve coding efficiencyImprove inefficiencyNon-electric lightingPoint-like light sourceSelf adaptiveImage signal
An input image signal 101 is divided into MC block units and, when coding processing is performed in these divided units, a motion compensation section 107 generates a motion-compensated prediction image 106a by detecting movement amounts in predetermined MC block units, a smoothing filter section 124 performs, with respect to the prediction image 106a, smoothing of pixels located at the boundaries of adjoining MC blocks on the basis of predetermined evaluation criteria, and a prediction residual signal 108, which is obtained from the difference between the prediction image 106b obtained by the smoothing, and the input image (input image signal 101), is encoded. Accordingly, it is possible to use relatively straightforward computation to perform processing, with respect to a prediction frame image generated by block-unit motion-compensated interframe prediction (MC), to adaptively smooth a discontinuous waveform generated between MC blocks of the prediction frame image, whereby the efficiency of low bit rate coding that employs interframe MC is improved.
Owner:NTT DOCOMO INC
Moving picture encoding apparatus
InactiveUS20090190655A1Reduce storage areaInhibition of informationColor television with pulse code modulationColor television with bandwidth reductionComputer graphics (images)Motion vector
An encoding circuit (1) encodes an input image. A thinning-out decision unit (2) determines whether or not a picture needs to be thinned out. A dummy picture storage device (4) stores a dummy picture. A dummy picture is encoded data in which all the blocks refer to the same picture, motion vectors of all the blocks are zero, and none of the blocks has prediction residual information. A reference picture selection unit (5) selects a reference picture from among a plurality of referenceable pictures. A header generating unit (7) generates a header to be added to a dummy picture. In the header, the selected reference picture is assigned to an index specifying a reference picture for the dummy picture.
Owner:FUJITSU LTD
Hybrid predicting-based video encoding method
InactiveCN101877785AAccurate predictionTelevision systemsDigital video signal modificationPattern recognitionVideo encoding
The invention belongs to the technical field of video encoding in signal processing particularly relates to a predicting method and provides a hybrid predicting method in video encoding technology. The method is suitable for video encoding standards, such as MPEG, H.26x, AVs and the like. The information of an inter-frame predicting mode and the information of an intra-frame predicting mode are combined by analyzing a video image and the distribution characteristic of a predicted residual and a video sequence is predicted in a novel hydric predicting mode. Due to the adoption of the combination, the process of separately considering time domain correlation and air space correlation in conventional video encoding technology can be broken, image predicting accuracy is enhanced and compression efficiency is improved.
Owner:祝志怡
Lossless image encoding/decoding method and apparatus using inter-color plane prediction
InactiveUS7333544B2Improve compression efficiencyPicture reproducers using cathode ray tubesCode conversionColor image codingLossless image coding
Owner:SAMSUNG ELECTRONICS CO LTD
Hybrid video coding supporting intermediate view synthesis
Hybrid video decoder supporting intermediate view synthesis of an intermediate view video from a first- and a second-view video which are predictively coded into a multi-view data signal with frames of the second-view video being spatially subdivided into sub-regions and the multi-view data signal having a prediction mode is provided, having: an extractor configured to respectively extract, from the multi-view data signal, for sub-regions of the frames of the second-view video, a disparity vector and a prediction residual; a predictive reconstructor configured to reconstruct the sub-regions of the frames of the second-view video, by generating a prediction from a reconstructed version of a portion of frames of the first-view video using the disparity vectors and a prediction residual for the respective sub-regions; and an intermediate view synthesizer configured to reconstruct first portions of the intermediate view video.
Owner:GE VIDEO COMPRESSION LLC
Method and system for using motion prediction to equalize video quality across intra-coded frames
InactiveUS20060104360A1Color television with pulse code modulationColor television with bandwidth reductionVideo processingMotion prediction
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
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