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US20120114035 MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE ENCODING PROCESSING PROGRAM  
The minimum Sum of Absolute Differences obtained by a motion vector search roughly judges the magnitude of quantization error by whether or not exceeding a predetermined threshold value. When the...
US20140328391 METHOD AND SYSTEM FOR VIDEO RATE CONTROL  
A method and system are provided for encoding a picture. The method includes encoding the picture into a first encoded picture using a first universal quantizer. If a size of the first encoded...
US20140219339 IMAGING DECODING APPARATUS  
An image decoding device is provided which includes an intra prediction module for reconstructing an intra prediction mode and creating a prediction block of a current block or a sub block, an...
US20100080289 Distributed video encoder and decoder and distributed video decoding method  
A distributed video encoder and decoder and a distributed video decoding method using adaptive quantization are provided. Adaptive quantization is performed at the time of encoding and decoding so...
US20130142251 SYNTAX EXTENSION OF ADAPTIVE LOOP FILTER IN HEVC  
An extension of an adaptive loop filter includes, in the sequence parameter set, a bit is added to signal whether the “default” or fixed adaptive loop filters are to be updated for this sequence....
US20140233635 SUB-PICTURE HIERARCHICAL QP CODING  
A method including: dividing a first video frame into a predetermined plurality of regions; assigning a quantization parameter to each of the predetermined plurality of regions in accordance with...
US20140198842 Hybrid Encoding and Decoding Methods for Single and Multiple Layered Video Coding Systems  
Encoding and decoding methods for single and multiple layered video coding systems are provided. Specifically, video information provided to a base layer and one or more enhancement layers can be...
US20080253448 METHOD AND SYSTEM FOR RATE CONTROL  
A method and system are provided for encoding a picture. The method includes encoding the picture into a first encoded picture using a first universal quantizer. If a size of the first encoded...
US20150078443 METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING A SUBSET OF TRANSFORM UNITS OF ENCODED VIDEO DATA  
A method of decoding a transform unit (e.g., 400) of encoded video data using Golomb-Rice decoding is disclosed. Significant residual coefficients for a sub-set of the transform unit are...
US20120307889 VIDEO DECODER WITH DYNAMIC RANGE ADJUSTMENTS  
A system for decoding video including receiving quantized coefficients representative of a block of video representative of a plurality of pixels and dequantizing the quantized coefficients....
US20090219993 Resource Allocation for Frame-Based Controller  
A method for resource allocation for video encoder to achieve optimal picture quality within a given resource budget. Making a video encoder utilize the computational complexity, bitrate and other...
US20090257489 RATE-DISTORTION QUANTIZATION FOR CONTEXT-ADAPTIVE VARIABLE LENGTH CODING (CAVLC)  
In general, this disclosure provides techniques for quantization of the coefficients of video blocks in a manner that can achieve a desirable balance of rate and distortion. The described...
US20090141796 METHOD AND DEVICE FOR ORDER-16 INTEGER TRANSFORM FROM ORDER-8 INTEGER COSINE TRANSFORM  
The invention is used in video coding. Systems, apparatuses and methods for processing an order-16 integer transform from an order-8 transform are provided. The order-16 transform method involves...
US20140036995 Method and Apparatus for Selecting a Coding Mode  
A method and apparatus for selecting a coding mode for a block of a current picture are disclosed. For example, the method selects a coding mode in accordance with a cost function, for coding the...
US20130114685 VIDEO DECODER WITH CONSTRAINED DYNAMIC RANGE  
A technique for decoding video including receiving quantized coefficient level values representative of a block of video representative of a plurality of pixels and a quantization parameter...
US20130308698 RATE AND DISTORTION ESTIMATION METHODS AND APPARATUS FOR COARSE GRAIN SCALABILITY IN SCALABLE VIDEO CODING  
Mode-dependent rate and distortion estimation methods for coarse grain scalability (CGS) in scalable video coding (SVC) are provided. The rate and distortion values of a base layer and an...
US20090175331 TWO PASS QUANTIZATION FOR CABAC CODERS  
This disclosure describes techniques for quantizing coefficients of a video block for a video coding process that supports context-based adaptive binary arithmetic coding (CABAC). A method may...
US20070030895 Coefficient scaling operational units  
Techniques for providing a coefficient scaling operational unit to perform the coefficient scaling computation for various image compression schemes are disclosed. To minimize multiple units, each...
US20050195902 Video decoding system  
A video decoding system is provided. When a DDR SDRAM is used as an external memory, MBs are rearranged and then stored to minimize memory access operations for the MBs at the DDR SDRAM and...
US20060126725 Automated test vector generation for complicated video system verification  
According to one embodiment, the present invention generates a test vector for verification of a video encoder or decoder by encoding video data using a permissible combination of parameters. One...
US20150016510 Region-of-Interest Aware Video Coding  
An encoder comprising an encoding module and an adaptation module. The encoding module is configured to encode video in at least one region-of-interest and outside the region-of-interest. The...
US20140362905 INTRA-CODING MODE-DEPENDENT QUANTIZATION TUNING  
Methods of encoding and decoding video are described. The methods for encoding and decoding a picture partitioned into blocks include determining an activity rank for a block, based on a block...
US20070140333 Image encoding method, device thereof, and control program thereof  
A block dead zone scale generator (202) receives an image signal and a prediction error, analyzes the pattern or prediction performance of a target block, and outputs a dead zone scale suitable...
US20100074325 VIDEO STREAMING APPARATUS WITH QUANTIZATION AND METHOD THEREOF  
A streaming appliance having an internal quantizer is disclosed so that the bit rate of a streamed video can be adjusted based on the current conditions of a link between the streaming appliance...
US20140092960 Bounded Rate Compression With Rate Control For Slices  
A system implements rate control for encoding and decoding operations, for example, operations performed on slices of data such as image data. The system implements a transformation from actual...
US20130343450 Distributed Architecture for Encoding and Delivering Video Content  
A split architecture for encoding a video stream. A source encoder may encode a video content stream to obtain an encoded bitstream and a side information stream. The side information stream...
US20110274163 VIDEO CODING APPARATUS AND VIDEO CODING METHOD  
A video coding apparatus includes: a change amount detection unit that detects, based on pixel data included in a target block to be coded, an amount of change indicating a displacement between a...
US20090074058 CODING TOOL SELECTION IN VIDEO CODING BASED ON HUMAN VISUAL TOLERANCE  
In one embodiment, a coding mode selection method is provided to improve the visual quality of an encoded video sequence. The coding mode is selected based on a human visual tolerance level....
US20130208790 PICTURE CODING AND DECODING  
An image encoder utilising a transformation operating between a spatial domain and a DCT or other transform domain, employs the steps of forming a prediction; subtracting the prediction to form a...
US20140003497 CONTROL AND USE OF CHROMA QUANTIZATION PARAMETER VALUES  
Innovations in control and use of chroma quantization parameter (“QP”) values that depend on luma QP values. More generally, the innovations relate to control and use of QP values for a secondary...
US20150229943 DEVICE AND METHOD FOR IMAGE ENCODING/DECODING USING PREDICTION DIRECTION CONVERSION AND SELECTIVE ENCODING  
A video decoding apparatus for decoding a current block comprised of a plurality of subblocks by using an intra prediction, includes: an inverse quantization unit to inversely quantize transformed...
US20140105283 METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO USING INTRA PREDICTION MODE DEPENDENT ADAPTIVE QUANTIZATION MATRIX  
A method of encoding video using intra prediction mode dependent quantization matrix includes: calculating an array of quantizers for each size of block unit (100); encoding the arrays of...
US20100254451 FRAMEWORK FOR QUALITY-AWARE VIDEO OPTIMIZATION  
A computer-implemented method includes receiving an encoded video frame, decompressing the received encoded video frame, extracting a first quantization parameter (QP) from the decompressed video...
US20150085921 REDUCING QUANTIZATION ARTIFACTS USING NEIGHBOR-BASED WEIGHTED DITHERING  
The forward transform and quantization components of the video encoders described herein may modify the quantization typically performed by video encoders to reduce quantization artifacts. For...
US20120140819 DEPTH MAP CODING  
Various implementations relate to depth map coding. In one method, a depth coding rate and depth distortion are determined for a coding mode. Based on the value of depth distortion, a correlation...
US20130329785 METHOD FOR DETERMINING COLOR DIFFERENCE COMPONENT QUANTIZATION PARAMETER AND DEVICE USING THE METHOD  
Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color...
US20080037630 Method of removing blocking artifact using quantization information  
In one embodiment, the method includes obtaining quantization information of a first block. The first block includes a pixel to be filtered. The method further includes determining a filtering...
US20120230395 VIDEO DECODER WITH REDUCED DYNAMIC RANGE TRANSFORM WITH QUANTIZATION MATRICIES  
A method for decoding video comprising receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized and...
US20080192821 DISTORTION ESTIMATION FOR QUANTIZED DATA  
Techniques for estimating distortion due to quantization of data are described. A histogram with multiple bins may be obtained for a set of coefficients to be quantized. Distortion due to...
US20060233236 Scene-by-scene digital video processing  
A scene-by-scene (S×S) compression process enables improved visual quality within applicable compression constraints to be obtained. A compressed video signal is analyzed, generating compression...
US20050286629 Coding of scene cuts in video sequences using non-reference frames  
A coding scheme for groups of frames that include scene cuts causes frames before and after the scene cut to be coded as non-reference frames with increased quantization parameters to reduce...
US20060098733 Variable-length coding device and method of the same  
It is an object to improve coding efficiency by suitably setting, with respect to input information in moving image coding, a parameter for quantization calculation at the time of quantization....
US20110249727 ADAPTIVE QUANTIZATION BASED ON SPATIAL ACTIVITY HISTOGRAM  
There is provided a method of adapting a Quantization parameter of digitally encoded video, comprising calculating spatial activity values of macroblocks in a picture of interest, creating a...
US20130202029 METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS  
A system is provided for creating binary codewords for transform coefficients used for relating transform units (TUs) divided into coding units (CUs) in a High Efficiency Video Coding (HEVC)...
US20130188694 METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS  
A system is provided for creating binary codewords for transform coefficients used for relating transform units (TUs) divided into coding units (CUs) in a High Efficiency Video Coding (HEVC)...
US20130343453 QUANTIZATION CONTROL APPARATUS AND METHOD, AND QUANTIZATION CONTROL PROGRAM  
A quantization control apparatus provided in a video encoding apparatus which utilizes intra slices. The quantization control apparatus includes a similarity computation device that computes...
US20120177110 CODING AND DECODING OF SOURCE SIGNALS USING CONSTRAINED RELATIVE ENTROPY QUANTIZATION  
Methods and devices for encoding and decoding are provided. A source signal value is encoded by a quantization index determined using a partition into quantization cells. Decoding of the...
US20090116550 VIDEO COMPRESSION SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT USING ENTROPY PREDICTION VALUES  
A method, apparatus and computer program product is configured to perform entropy coding of quantized transform coefficients when for some reason no pixels are available for prediction. Different...
US20140198841 CONTEXT INTIALIZATION IN ENTROPY CODING  
A decoder includes an entropy decoder configured to derive a number of bins of the binarizations from the data stream using binary entropy decoding by selecting a context among different contexts...
US20130156098 METHOD AND APPARATUS FOR DUAL PASS RATE CONTROL VIDEO ENCODING  
A method of dual-pass rate control video encoding and an encoder are disclosed. Uncompressed input video is received with a video encoder. First pass encoding is performed, and a second pass...