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US20150063444 Dynamic quantization method for video encoding  
The invention relates to a method for dynamic quantization of an image stream including transformed blocks, the method comprising a step for establishing a relationship (V12, V10, V20) between at...
US20060078049 Method and system for entropy coding/decoding of a video bit stream for fine granularity scalability  
A method, program product and device for encoding and/or decoding video data can include treating coefficients in the enhancement layer corresponding to a non-zero coefficient in the base layer...
US20110110423 PICTURE CODING METHOD, PICTURE DECODING METHOD, PICTURE CODING APPARATUS, PICTURE DECODING APPARATUS, AND PROGRAM THEREOF  
The picture coding method according to the present invention is a picture coding method for coding a picture on a block-by-block basis through orthogonal transformation and quantization, and...
US20110274161 IMAGE PROCESSING METHOD AND APPARATUS  
Provided are an image processing apparatus and an image processing method. The image processing method includes: obtaining a reference block a having a first resolution and a differential block...
US20150256826 MULTI-SYMBOL RUN-LENGTH CODING  
A method includes performing, by a microprocessor of a computing device, a coding to obtain a residual of a residual data block from an original data block. The method includes pre-defining a...
US20080225947 QUANTIZATION FOR HYBRID VIDEO CODING  
Method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal;...
US20110103469 ENTROPY ENCODING/DECODING METHOD AND APPARATUS FOR ACCELERATING VIDEO DECODING  
An entropy encoding method and apparatus implementing the same, the method including: generating bitstreams of data groups by performing entropy encoding on a plurality of symbols of the data...
US20110182356 A METHOD FOR THE ESTIMATION OF SPATIO-TEMPORAL HOMOGENEITY IN VIDEO SEQUENCES  
There is provided a method of encoding video data, comprising estimating the spatio-temporal homogeneity of at least one portion of the video data, providing spatio-temporal homogeneity flags...
US20130243084 BIT RATE REGULATION MODULE AND METHOD FOR REGULATING BIT RATE  
Bit rate regulation module (3) comprising: a selection block (31) configured to select a frame type to be used to encode a current frame of a video, a determination block (32) configured to...
US20130343448 MODIFIED CODING FOR TRANSFORM SKIPPING  
Methods and devices for modified coding of blocks of residuals in the case of transform skipping. To better align the data with assumptions upon which the entropy coding scheme is based, the block...
US20120183053 METHODS AND APPARATUS FOR EMBEDDED QUANTIZATION PARAMETER ADJUSTMENT IN VIDEO ENCODING AND DECODING  
Methods and apparatus are provided for embedded quantization parameter adjustment in video encoding and decoding. An apparatus includes an encoder for encoding picture data for at least a block in...
US20080089410 Moving Picture Coding Method And Moving Picture Decoding Method  
A moving picture coding apparatus 1 includes: a quantization matrix holding unit (112) that holds a quantization matrix (WM) which has already been transmitted in a parameter set and a matrix ID...
US20110051804 Multiple Description Coding With Spatial Shifting  
Techniques are provided herein to shift at an encoding device a portion of a video sequence by a first predetermined number of pixels horizontally and by a first predetermined number of pixels...
US20100150226 SWITCHING BETWEEN DCT COEFFICIENT CODING MODES  
A system and method is provided for improving efficiency when entropy coding a block of quantized transform coefficients in video coding. Quantized coefficients are coded in two separate coding...
US20050152458 Error masking method using moving picture electronic watermark of video  
An error masking method using a moving picture electronic watermark. The method can reduce the operation quantity required for estimating motion vectors and acquire correct motion vectors even in...
US20130128957 APPARATUS AND METHODOLOGY FOR A VIDEO CODEC SYSTEM WITH NOISE REDUCTION CAPABILITY  
Systems and methods for noise reduction are disclosed herein. The system includes a video codec system that can encode and/or decode video information. A noise representation component can...
US20130051457 QUANTIZATION IN VIDEO CODING  
In an example, aspects of this disclosure relate to a method of coding video data that includes determining a quantization parameter (QP) for coding residual video data, where the QP is indexed to...
US20150189283 CODING USING A REDUNDANT DICTIONARY, SUCH AS VIDEO CODING USING A SELF-ADAPTIVE REDUNDANT DICTIONARY INCLUDING SPATIAL AND/OR TEMPORAL PREDICTION CANDIDTE ATOMS  
An example video encoder uses a self-adaptive dictionary that only depends on the block location, without requiring real time design/redesign of the dictionary. A mean-removed block may be...
US20100290524 Method and apparatus for joint quantization parameter adjustment  
The present principles provides a method and apparatus for jointly adjusting the rounding offset and the quantization step size on a macroblock level to improve the perceptual quality of the fine...
US20090147843 METHOD AND APPARATUS FOR QUANTIZATION, AND METHOD AND APPARATUS FOR INVERSE QUANTIZATION  
Provided are a quantization method and apparatus and an inverse-quantization method and apparatus for determining quantization steps using lengths of runs that are transform coefficients having...
US20070071093 Multiple layer video encoding  
Certain embodiments disclosed herein provide systems and methods for processing multimedia data. The systems and methods comprise receiving a first set of quantized coefficients representing at...
US20060050786 Moving picture coding apparatus and computer program product  
A moving picture coding apparatus includes a prediction signal generating unit that generates a prediction signal for each coding mode from an input image of an interlaced moving picture and a...
US20120177106 METHODS AND APPARATUS FOR ADAPTIVE GEOMETRIC PARTITIONING FOR VIDEO DECODING  
There are provided methods and apparatus for adaptive geometric partitioning for video encoding and decoding. An apparatus includes an encoder for encoding image data corresponding to pictures by...
US20080285645 Adaptive border processing  
A video compression apparatus and method for producing a compressed video signal from an input video signal includes quantisation control means 13 for varying a level of quantisation within an...
US20140294069 METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE BY USING LARGE TRANSFORM UNIT  
An apparatus for decoding an image includes an entropy decoder that performs entropy decoding to generate quantized transformation coefficients of a transformation unit in a coding unit and an...
US20150110173 VIDEO CODING USING SCATTER-BASED SCAN TABLES  
Scatter-based scan tables are used to encode and decode video streams. Scatter scan patterns transform coefficients between positions within a 2D array representing a block of a frame and...
US20060120450 Method and apparatus for multi-layered video encoding and decoding  
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...
US20130114686 VIDEO DECODER WITH ENHANCED CABAC MOTION VECTOR DECODING  
A decoder receives a bitstream containing quantized coefficients representative of blocks of video representative of a plurality of pixels and decodes the bitstream using context adaptive binary...
US20060209961 Video encoding/decoding method and apparatus using motion prediction between temporal levels  
A video encoding/decoding method and apparatus is disclosed that can efficiently compress/decompress motion vectors in a video codec including a hierarchical temporal level decomposition process....
US20150146777 MOVING IMAGE CODING APPARATUS AND MOVING IMAGE DECODING APPARATUS  
A macro block size determining unit 1 determines the size of each macro block on a frame-by-frame basis. A macro block dividing unit 2 divides an inputted image into macro blocks each having the...
US20150139309 MOVING IMAGE CODING APPARATUS AND MOVING IMAGE DECODING APPARATUS  
A macro block size determining unit 1 determines the size of each macro block on a frame-by-frame basis. A macro block dividing unit 2 divides an inputted image into macro blocks each having the...
US20140341276 METHOD AND APPARATUS FOR HIERARCHICAL DATA UNIT-BASED VIDEO ENCODING AND DECODING COMPRISING QUANTIZATION PARAMETER PREDICTION  
A method of decoding a video includes determining an initial value of a quantization parameter (QP) used to perform inverse quantization on coding units included in a slice segment, based on...
US20050157793 Video coding/decoding method and apparatus  
A video encoder/decoder and method. The video coding method includes estimating a virtual frame, electing a reference frame from candidate frames including the virtual frame to remove temporal...
US20130044808 IMAGE ENCODING DEVICE AND IMAGE DECODING DEVICE  
A encoding device includes a boundary pixel prediction value generation unit, boundary pixel prediction error estimation unit, and a quantized coefficient encoding unit. The boundary pixel...
US20120269263 METHOD FOR CODING AND METHOD FOR RECONSTRUCTION OF A BLOCK OF AN IMAGE  
A method for coding a current block of an image is disclosed that comprises: determining, for the current block, current coding parameters,determining, for at least one neighbouring block of the...
US20110255595 QUANTIZATION ADJUSTMENT BASED ON TEXTURE LEVEL  
A video encoder identifies a current smooth region of a current picture in a sequence and performs temporal analysis by determining whether a corresponding region in at least one previous and/or...
US20100226429 METHODS AND ELECTRONIC DEVICES FOR QUANTIZATION AND DE-QUANTIZATION  
Electronic devices for de-quantization are disclosed. An electronic device includes at least a multiplier. The multiplier generates a de-quantization scale by multiplying a first sub-factor by a...
US20050157783 Adaptive bandwidth allocation method and system for AV signal distribution  
A method for controlling audio/visual signal distribution includes receiving an input signal and prefiltering the input signal. Plural quantized coefficients are generated from the input signal...
US20060239346 Picture encoding device  
Separating means 11 separates a picture signal into a reference signal and one or more signals to be predicted. A reference signal including a quantization error is outputted from inverse...
US20080151999 Bypass using sum of absolute transformed differences value (SATD) in a video coding process  
In one embodiment, a method for bypassing transform and quantization steps in a video compression is provided. The method determines one or more threshold values that are computed for a bypass of...
US20100014582 INVERSE QUANTIZATION CIRCUIT, INVERSE QUANTIZATION METHOD AND IMAGE REPRODUCING APPARATUS  
Provided are a versatile inverse quantization circuit which performs inverse quantization operable for various encoding systems by a single circuit, an inverse quantization method, and an image...
US20080192824 VIDEO CODING METHOD AND VIDEO CODING APPARATUS  
To provide a method and an apparatus for adaptively improving the image quality of current images to be coded by reducing effects due to pulsing artifacts. The video coding method of the present...
US20100284458 ADAPTIVE FILTERING  
A method and device for determining an adaptive filter having multiple filter parameters, wherein a first filter parameter has a first level of adaptivity and a second filter parameter has a...
US20150103893 VIDEO COMPRESSION USING MULTIPLE VARIABLE LENGTH CODING METHODS FOR MULTIPLE TYPES OF TRANSFORM COEFFICIENT BLOCKS  
Classifying a series of quantized transform coefficients of a block of image data into one of a pre-defined plurality of classes for entropy coding, and entropy coding the block. A class is...
US20120020408 Video compression using multiple variable length coding methods for multiple types of transform coefficient blocks  
Classifying a series of quantized transform coefficients of a block of image data into one of a pre-defined plurality of classes for entropy coding, and entropy coding the block. A class is...
US20140314145 METHOD OF ENCODING PICTURE AND PICTURE ENCODING DEVICE  
A buffering delay can be reduced and moving picture encoding in low delay is performed while deterioration of picture quality is minimized. A quantization step of performing quantization of input...
US20050213658 Methods and systems for encoding-decoding signals, and computer program product therefor  
A method for encoding and decoding media signals, includes the operations of generating at a transmitting side multiple descriptions associated to data of the media signals through a downsampling...
US20070280349 SCALABLE RATE CONTROL SYSTEM FOR A VIDEO ENCODER  
A rate control system for a video encoder including rate control logic which determines a first QP corresponding to a selected encoding layer of multiple encoding layers, and scaling logic...
US20050232350 Inverse prediction apparatus and decoding apparatus using the same  
An inverse prediction unit inputs decoding information, which is variable-length-decoded data, and target macro block information, which indicates a target macro block. The inverse prediction unit...
US20110206115 ENCODING APPARATUS, ENCODING METHOD AND ENCODING PROGRAM  
Disclosed herein is a data encoding apparatus including a transform encoding section; a quantization-scale computation section; a feature-quantity extraction section; a quantization-scale...