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公开(公告)号：US20110116545A1
公开(公告)日：2011-05-19
申请号：US12619749
申请日：2009-11-17
申请人： Jinwen Zan , Dake He , En-hui Yang
发明人： Jinwen Zan , Dake He , En-hui Yang
CPC分类号： H04N19/198 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/82
摘要： A video encoder sends at least some information regarding boundary strength to the decoder along with the bitstream of encoded video. The decoder is configured to use the received boundary strength information from the encoder to reduce the number of computations necessary for the decoder to determine the boundary strength details required for performing deblocking when decoding the bitstream.
摘要翻译： 视频编码器将至少一些关于边界强度的信息与编码视频的比特流一起发送到解码器。 解码器被配置为使用来自编码器的接收的边界强度信息来减少解码器所需的计算次数，以确定在解码比特流时执行解块所需的边界强度细节。
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公开(公告)号：US08487791B2
公开(公告)日：2013-07-16
申请号：US12707797
申请日：2010-02-18
申请人： Gergely Ferenc Korodi , Dake He , En-Hui Yang
发明人： Gergely Ferenc Korodi , Dake He , En-Hui Yang
IPC分类号： H03M7/00
摘要： A method for entropy coding data using parallel entropy coders to encode an input sequence as a plurality of encoded subsequences, which are then combined to form an output bitstream. The input sequence is separated into subsequences on the basis of a context model. A method for entropy decoding a bitstream of encoded data by extracting a plurality of encoded subsequences from the bitstream and entropy decoding the encoded subsequences in parallel to generate a plurality of decoded subsequences, which are then interleaved based on a context model to produce a reconstructed sequence.
摘要翻译： 一种用于使用并行熵编码器熵编码数据以将输入序列编码为多个编码子序列的方法，其然后被组合以形成输出比特流。 基于上下文模型将输入序列分成子序列。 一种用于通过从比特流中提取多个编码子序列来熵解码编码数据的比特流的方法，并行地对编码的子序列进行熵解码以产生多个解码子序列，然后基于上下文模型进行交织以产生重构序列 。
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23.发明申请METHOD AND ENCODER FOR CONSTRAINED SOFT-DECISION QUANTIZATION IN DATA COMPRESSION 有权数据压缩中约束软决策的方法和编码器公开(公告)号：US20110200101A1
公开(公告)日：2011-08-18
申请号：US12707729
申请日：2010-02-18
申请人： Jinwen Zan , Dake He , En-Hui Yang
发明人： Jinwen Zan , Dake He , En-Hui Yang
IPC分类号： H04N7/26
CPC分类号： H04N19/194 , H04N19/126 , H04N19/147 , H04N19/18 , H04N19/61
摘要： A method of encoding a video using constrained soft-decision quantization. The soft-decision quantization includes first performing hard-decision quantization to obtain hard quantized coefficients and, then, obtaining a soft quantized coefficient using a rate-distortion calculation over a search range of quantization levels for a transform domain coefficient, wherein the search range of quantization levels for that transform domain coefficient is constrained within a number of quantization levels of a corresponding hard quantized coefficient. The search range may be based upon a fixed threshold, the coefficient position, the hard quantized coefficient magnitude, a threshold value less accumulated distortion, or other factors, including combinations of these factors. The accumulated distortion may be measured by an L1 norm.
摘要翻译： 一种使用受限的软判决量化对视频进行编码的方法。 软判决量化包括首先执行硬判决量化以获得硬量化系数，然后使用在变换域系数的量化级的搜索范围上的速率失真计算来获得软量化系数，其中搜索范围 该变换域系数的量化级别被限制在对应的硬量化系数的量化级数中。 搜索范围可以基于固定阈值，系数位置，硬量化系数幅度，阈值较小累积失真或其它因素，包括这些因素的组合。 可以通过L1范数来测量累积的失真。
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公开(公告)号：US08768082B2
公开(公告)日：2014-07-01
申请号：US13166423
申请日：2011-06-22
IPC分类号： G06K9/36
CPC分类号： H04N19/126 , H04N19/105 , H04N19/176 , H04N19/30 , H04N19/463 , H04N19/593 , H04N19/91
摘要： Methods, systems, and computer programs for encoding and decoding image are described. In some aspects, an input data block and a prediction data block are accessed. A projection factor is generated based on a projection of the input data block onto the prediction data block. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. A residual data block is generated based on a difference between the input data block and the scaled prediction data block. In some aspects, a prediction data block, a residual data block, and a projection factor associated with the residual data block are accessed. A scaled prediction data block is generated by multiplying the projection factor by the prediction data block. An output data block is generated by summing the residual data block and the scaled prediction data block.
摘要翻译： 描述用于编码和解码图像的方法，系统和计算机程序。 在一些方面，访问输入数据块和预测数据块。 基于将输入数据块投影到预测数据块上而生成投影因子。 通过将投影因子乘以预测数据块来生成缩放预测数据块。 基于输入数据块和缩放预测数据块之间的差异生成残留数据块。 在一些方面，访问与残留数据块相关联的预测数据块，残差数据块和投影因子。 通过将投影因子乘以预测数据块来生成缩放预测数据块。 通过对残差数据块和缩放预测数据块求和来生成输出数据块。
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25.发明授权Method and device for motion vector estimation in video transcoding using union of search areas 有权使用搜索区域联合进行视频转码的运动矢量估计方法和装置公开(公告)号：US08340188B2
公开(公告)日：2012-12-25
申请号：US12684298
申请日：2010-01-08
CPC分类号： H04N19/59 , H04N19/109 , H04N19/147 , H04N19/176 , H04N19/40 , H04N19/52 , H04N19/57 , H04N19/61
摘要： A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full-resolution video. Full-resolution motion vectors are downscaled and each downscaled motion vector pinpoints a search area within a reference frame. The union or combination of search areas defines the search field for candidate motion vectors. A motion vector is selected from the candidates based on realizing a minimum rate-distortion cost.
摘要翻译： 代码转换器和对下采样视频的帧间预测帧进行编码的方法，其中下采样视频是全分辨率视频的空间下采样版本。 全分辨率运动矢量被缩小，每个缩小的运动矢量精确定位参考帧内的搜索区域。 搜索区域的联合或组合定义候选运动矢量的搜索字段。 基于实现最小速率失真成本从候选中选择运动矢量。
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26.发明授权Method and device for motion vector prediction in video transcoding using full resolution residuals 有权使用全分辨率残差的视频转码中运动矢量预测的方法和装置公开(公告)号：US08315310B2
公开(公告)日：2012-11-20
申请号：US12684219
申请日：2010-01-08
CPC分类号： H04N19/59 , H04N19/109 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/40 , H04N19/52 , H04N19/61
摘要： A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full-resolution video. Full-resolution motion vectors are downscaled and a weighting factor is calculated for each downscaled motion vector based upon the transform domain residual coefficients associated with that full-resolution motion vector. A motion vector prediction is made based on the weighted average using the downscaled motion vectors and their weighting factors.
摘要翻译： 代码转换器和对下采样视频的帧间预测帧进行编码的方法，其中下采样视频是全分辨率视频的空间下采样版本。 基于与该全分辨率运动矢量相关联的变换域剩余系数，对全分辨率运动矢量进行缩减，并且为每个缩小的运动矢量计算加权因子。 基于使用缩小运动矢量及其加权因子的加权平均值进行运动矢量预测。
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27.发明申请METHOD AND DEVICE FOR VIDEO TRANSCODING USING QUAD-TREE BASED MODE SELECTION 审中-公开使用基于四叉树模式选择的视频平移的方法和装置公开(公告)号：US20110170608A1
公开(公告)日：2011-07-14
申请号：US12684247
申请日：2010-01-08
IPC分类号： H04N7/26
CPC分类号： H04N19/109 , H04N19/147 , H04N19/40 , H04N19/59 , H04N19/61 , H04N19/96
摘要： An encoder for encoding a downsampled video in which macroblock partitioning is based upon downsampled partitioning of full-resolution macroblocks. The refinement of the downsampled partitioning involves storing the downsampled partitioning in a quad-tree data structure and recursively identifying and evaluating possible mergers of leaf nodes having a common parent node. Using rate-distortion analysis possible mergers are evaluated and advantageous mergers are performed, thereby creating larger partitions and new leaf nodes. The traversing of the quad-tree to identify possible leaf node mergers is stopped when no further possible mergers may be identified that would result in a rate-distortion advantage.
摘要翻译： 用于编码下采样视频的编码器，其中宏分区基于全分辨率宏块的下采样分区。 下采样分区的细化涉及将下采样分区存储在四叉树数据结构中，并递归地识别和评估具有公共父节点的叶节点的可能合并。 使用速率失真分析来评估可能的合并，并执行有利的合并，从而创建更大的分区和新的叶节点。 当不能识别可能导致速率失真优势的可能的合并时，停止遍历四叉树以识别可能的叶节点合并。
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28.发明申请METHOD AND DEVICE FOR MOTION VECTOR ESTIMATION IN VIDEO TRANSCODING USING FULL-RESOLUTION RESIDUALS 有权使用全分辨率残差视频转换运动矢量估计的方法和装置公开(公告)号：US20110170597A1
公开(公告)日：2011-07-14
申请号：US12684374
申请日：2010-01-08
IPC分类号： H04N7/26
CPC分类号： H04N19/59 , H04N19/109 , H04N19/132 , H04N19/147 , H04N19/176 , H04N19/40 , H04N19/517
摘要： A transcoder and method of transcoding in which inter-prediction frames of a downsampled video are encoded using downsampled full-resolution residuals in the rate-distortion analysis used to locate a motion vector for a given partition in the downsampled video.
摘要翻译： 一种代码转换器和代码转换方法，其中下采样视频的帧间预测帧使用用于定位下采样视频中的给定分区的运动矢量的速率 - 失真分析中的下采样全分辨率残差进行编码。
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29.发明申请METHOD AND DEVICE FOR MOTION VECTOR PREDICTION IN VIDEO TRANSCODING USING FULL RESOLUTION RESIDUALS 有权使用全分辨率残差视频转换运动矢量预测的方法和装置公开(公告)号：US20110170595A1
公开(公告)日：2011-07-14
申请号：US12684219
申请日：2010-01-08
CPC分类号： H04N19/59 , H04N19/109 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/40 , H04N19/52 , H04N19/61
摘要： A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full-resolution video. Full-resolution motion vectors are downscaled and a weighting factor is calculated for each downscaled motion vector based upon the transform domain residual coefficients associated with that full-resolution motion vector. A motion vector prediction is made based on the weighted average using the downscaled motion vectors and their weighting factors.
摘要翻译： 代码转换器和对下采样视频的帧间预测帧进行编码的方法，其中下采样视频是全分辨率视频的空间下采样版本。 基于与该全分辨率运动矢量相关联的变换域剩余系数，对全分辨率运动矢量进行缩减，并且为每个缩小的运动矢量计算加权因子。 基于使用缩小运动矢量及其加权因子的加权平均值进行运动矢量预测。
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公开(公告)号：US09294779B2
公开(公告)日：2016-03-22
申请号：US13524117
申请日：2012-06-15
IPC分类号： H04N7/18 , H04N19/467 , H04N19/463 , H04N19/91 , H04N19/48
CPC分类号： H04N19/18 , H04N19/184 , H04N19/44 , H04N19/463 , H04N19/467 , H04N19/48 , H04N19/91
摘要： Methods and devices for reconstructing coefficient levels from a bitstream of encoded video data for a coefficient group in a transform unit. Sign bits are hidden in the parity of partially overlapping subsets of a set of coefficients. This enables the hiding of multiple sign bits per coefficient group. Other information bits may be hidden instead of sign bits in some cases.
摘要翻译： 用于从变换单元中的系数组的编码视频数据的比特流重建系数级的方法和装置。 符号位隐藏在一组系数的部分重叠子集的奇偶校验中。 这使得能够隐藏每个系数组的多个符号位。 在某些情况下，其他信息位可能被隐藏而不是符号位。
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