公开(公告)号：US08767835B2

公开(公告)日：2014-07-01

申请号：US12979414

申请日：2010-12-28

申请人： Robert A. Cohen ,  Jewon Kang ,  Anthony Vetro

发明人： Robert A. Cohen ,  Jewon Kang ,  Anthony Vetro

IPC分类号： H04N7/50 ,  H04N7/26 ,  H04N7/32 ,  H04N7/30

CPC分类号： H04N19/97 ,  H04N19/102 ,  H04N19/105 ,  H04N19/122 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46

摘要： A video encoded as a bit stream is decoded by maintaining a set of dictionaries generated from decoded prediction residual signals, wherein elements of the set of dictionaries have associated indices. A current macroblock is entropy decoded and inverse quantized to produce decoded coefficients. For the current macroblock, a particular dictionary of the set of dictionaries is selected according to a prediction mode signaled in the bit stream, and particular elements of the particular dictionary are selected according to a copy mode signal in the bit stream and the associated index. The particular elements is scaled and combined, using the decoded coefficients, to reconstruct a current decoded macroblock prediction residual signal. Then, the current decoded macroblock prediction residual signal is combined with previously decoded macroblocks to generate an output macroblock of a reconstructed video, wherein the steps are performed in a decoder.

摘要翻译： 通过维持从解码的预测残差信号产生的一组字典来解码编码为比特流的视频，其中字典集合中的元素具有相关联的索引。 当前宏块被熵解码并被反量化以产生解码系数。 对于当前的宏块，根据在位流中发信号的预测模式来选择字典集合的特定字典，并且根据位流中的复制模式信号和相关联的索引来选择特定字典的特定元素。 使用解码的系数对特定元素进行缩放和组合，以重构当前解码的宏块预测残差信号。 然后，将当前解码的宏块预测残差信号与先前解码的宏块相组合以产生重构视频的输出宏块，其中在解码器中执行这些步骤。

公开(公告)号：US20120163451A1

公开(公告)日：2012-06-28

申请号：US12979414

申请日：2010-12-28

申请人： Robert A. Cohen ,  Jewon Kang ,  Anthony Vetro

发明人： Robert A. Cohen ,  Jewon Kang ,  Anthony Vetro

IPC分类号： H04N7/32

CPC分类号： H04N19/97 ,  H04N19/102 ,  H04N19/105 ,  H04N19/122 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46

摘要： A video encoded as a bit stream is decoded by maintaining a set of dictionaries generated from decoded prediction residual signals, wherein elements of the set of dictionaries have associated indices. A current macroblock is entropy decoded and inverse quantized to produce decoded coefficients. For the current macroblock, a particular dictionary of the set of dictionaries is selected according to a prediction mode signaled in the bit stream, and particular elements of the particular dictionary are selected according to a copy mode signal in the bit stream and the associated index. The particular elements is scaled and combined, using the decoded coefficients, to reconstruct a current decoded macroblock prediction residual signal. Then, the current decoded macroblock prediction residual signal is combined with previously decoded macroblocks to generate an output macroblock of a reconstructed video, wherein the steps are performed in a decoder.

摘要翻译： 通过维持从解码的预测残差信号产生的一组字典来解码编码为比特流的视频，其中字典集合中的元素具有相关联的索引。 当前宏块被熵解码并被反量化以产生解码系数。 对于当前的宏块，根据在位流中发信号的预测模式来选择字典集合的特定字典，并且根据位流中的复制模式信号和相关联的索引来选择特定字典的特定元素。 使用解码的系数对特定元素进行缩放和组合，以重构当前解码的宏块预测残差信号。 然后，将当前解码的宏块预测残差信号与先前解码的宏块相组合以产生重构视频的输出宏块，其中在解码器中执行这些步骤。

公开(公告)号：US08929455B2

公开(公告)日：2015-01-06

申请号：US13175737

申请日：2011-07-01

申请人： Robert A. Cohen ,  Anthony Vetro

发明人： Robert A. Cohen ,  Anthony Vetro

IPC分类号： H04N7/12 ,  H04N19/102 ,  H04N19/10 ,  H04N19/12 ,  H04N19/159 ,  H04N19/61 ,  H04N19/11

CPC分类号： H04N7/52 ,  H04N19/10 ,  H04N19/11 ,  H04N19/12 ,  H04N19/122 ,  H04N19/159 ,  H04N19/60 ,  H04N19/61

摘要： 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.

摘要翻译： 一种方法对比特流中的图像进行编码，其中比特流包括用于获得相关联的TU的数据的编码图像和用于生成变换树的数据，以及将编码单元（CU）划分为预测单元（PU）和用于获得预测模式的数据 或与每个PU相关联的方向。 定义一个或多个映射表，其中每个表的每一行具有相关联的索引和用于将逆变换应用于TU中的数据的第一组变换类型。 根据索引选择第一组变换类型，然后应用第二组变换类型作为数据的逆变换，其中根据第一组变换类型确定第二组变换类型，并且a 变换切换标志（ttf）以获得重建的预测残差。

公开(公告)号：US08494290B2

公开(公告)日：2013-07-23

申请号：US13169959

申请日：2011-06-27

申请人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

发明人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

IPC分类号： G06K9/36

CPC分类号： G06T9/40 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

摘要： A bitstream includes coded pictures, and split-flags for generating a transform tree. The bit stream is a partitioning of coding units (CUs) into Prediction Units (PUs). The transform tree is generated according to the split-flags. Nodes in the transform tree represent transform units (TU) associated with the CUs. The generation splits each TU only if the corresponding split-flag is set. For each PU that includes multiple TUs, the multiple TUs are merged into a larger TU, and the transform tree is modified according to the splitting and merging. Then, data contained in each PU can be decoded using the TUs associated with the PU according to the transform tree.

摘要翻译： 比特流包括编码图像，以及用于生成变换树的分割标志。 比特流是将编码单元（CU）划分成预测单元（PU）。 转换树根据分裂标志生成。 变换树中的节点表示与CU相关联的变换单元（TU）。 仅当相应的分割标志被设置时，该代码才能分割每个TU。 对于包含多个TU的每个PU，将多个TU合并成一个较大的TU，根据分割和合并修改变换树。 然后，可以使用根据变换树与PU相关联的TU来解码包含在每个PU中的数据。

公开(公告)号：US08811760B2

公开(公告)日：2014-08-19

申请号：US13281334

申请日：2011-10-25

申请人： Robert A. Cohen ,  Xiaozhong Xu ,  Anthony Vetro

发明人： Robert A. Cohen ,  Xiaozhong Xu ,  Anthony Vetro

IPC分类号： G06K9/46

CPC分类号： H04N19/176 ,  H04N19/11 ,  H04N19/154 ,  H04N19/157 ,  H04N19/196 ,  H04N19/593 ,  H04N19/70

摘要： A system and a method for decoding at least a portion of an image includes determining a current prediction mode based on a combination of a prediction mode residue and a function of at least one previous prediction mode and decoding the portion of the image using the current prediction mode.

摘要翻译： 用于对图像的至少一部分进行解码的系统和方法包括：基于预测模式残差和至少一个先前预测模式的函数的组合来确定当前预测模式，并使用当前预测对图像的部分进行解码 模式。

公开(公告)号：US20120230396A1

公开(公告)日：2012-09-13

申请号：US13250972

申请日：2011-09-30

申请人： Robert A. Cohen ,  Shantanu Rane ,  Anthony Vetro ,  Huifang Sun

发明人： Robert A. Cohen ,  Shantanu Rane ,  Anthony Vetro ,  Huifang Sun

IPC分类号： H04N7/26

CPC分类号： H04N19/467 ,  H04N19/18 ,  H04N19/196 ,  H04N19/463 ,  H04N19/48 ,  H04N19/61 ,  H04N19/70

摘要： A method decodes a picture in a form of a bit-stream. The picture is encoded and represented by vectors of coefficients. Each coefficient is in a quantized form. A specific coefficient is selected in each vector based on a scan order of the vector. Then, a set of modes is inferred based on characteristics of the specific coefficient. Subsequently, the bit-stream is decoded according to the set of modes.

摘要翻译： 一种方法以比特流的形式对图像进行解码。 图像被编码并由系数矢量表示。 每个系数都是量化的形式。 基于向量的扫描顺序在每个向量中选择特定系数。 然后，基于特定系数的特征推断出一组模式。 随后，根据模式集合解码比特流。

公开(公告)号：US20110090954A1

公开(公告)日：2011-04-21

申请号：US12603177

申请日：2009-10-21

申请人： Robert A. Cohen ,  Sven Klomp ,  Huifang Sun ,  Anthony Vetro

发明人： Robert A. Cohen ,  Sven Klomp ,  Huifang Sun ,  Anthony Vetro

IPC分类号： H04N7/24

CPC分类号： H04N19/463 ,  H04N19/122 ,  H04N19/13 ,  H04N19/147 ,  H04N19/196 ,  H04N19/197

摘要： An encoded video in the form of a bitstream includes a sequence of frames, and each frame is partitioned into encoded blocks. A context for decoding is selected for each encoded block. The bitstream is entropy decoded based on the context to obtain a transform indicator difference. The transform index, which indicates a transform type and a transform direction, is based on the transform indicator difference and a predicted transform indicator. Transform coefficients are obtained from the bitstream, and inverse transformed according to the transform index to produce a decoded video.

摘要翻译： 以比特流形式的编码视频包括一系列帧，每帧被划分成编码块。 为每个编码块选择用于解码的上下文。 基于上下文对比特流进行熵解码以获得变换指示符差异。 指示变换类型和变换方向的变换索引基于变换指标差和预测变换指标。 从比特流获得变换系数，并根据变换索引进行逆变换以产生解码视频。

公开(公告)号：US20110013692A1

公开(公告)日：2011-01-20

申请号：US12413583

申请日：2009-03-29

申请人： Robert A. Cohen ,  Anthony Vetro

发明人： Robert A. Cohen ,  Anthony Vetro

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/32

CPC分类号： H04N19/59 ,  H04N19/132 ,  H04N19/139 ,  H04N19/14 ,  H04N19/172 ,  H04N19/40 ,  H04N19/513

摘要： Embodiments of the invention describe a method for transcoding an input video in a first encoded format to an output video in a second encoded format, wherein the videos include a set of segments and each segment includes frames. First, the method is determining a set of downsample resilient segments in the input video and a set of full-resolution segments in the input video. Next, the method is downsampling the set of downsample resilient segments to produce a set of downsampled segments and transcoding the input video using the set of full-resolution segments and the set of downsampled segments to produce the output video including at least two segments with different resolutions.

摘要翻译： 本发明的实施例描述了一种以第一编码格式将输入视频代码转换为第二编码格式的输出视频的方法，其中视频包括一组片段，每个片段包括帧。 首先，该方法是确定输入视频中的一组下采样弹性段和输入视频中的一组全分辨率段。 接下来，该方法对下采样弹性段的集合进行下采样，以产生一组下采样段，并使用该组全分辨率段和下采样段进行代码转换，以产生包括至少两个具有不同分段的段的输出视频 决议。

公开(公告)号：US20120183043A1

公开(公告)日：2012-07-19

申请号：US13007394

申请日：2011-01-14

申请人： Robert A. Cohen ,  Osman G. Sezer ,  Anthony Vetro

发明人： Robert A. Cohen ,  Osman G. Sezer ,  Anthony Vetro

IPC分类号： H04N7/32

CPC分类号： H04N19/192 ,  H04N19/122 ,  H04N19/137 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/19 ,  H04N19/61

摘要： A video encoded as a bit stream is decoded using trained sparse orthonormal transforms generated from decoded prediction residual signals, wherein the transforms have associated indices. A current macroblock is entropy decoded and inverse quantized to produce decoded coefficients. For the current macroblock, an L0-norm regularized training process generates a set of mode-dependent sparse orthonormal inverse transforms, selected according to a prediction mode signaled in the bit stream. Decoded coefficients are inverse transformed and then are combined with previously decoded macroblocks to generate an output macroblock of a reconstructed video.

摘要翻译： 使用经过解码的预测残差信号生成的训练稀疏正交变换来解码编码为比特流的视频，其中变换具有相关联的索引。 当前宏块被熵解码并被反量化以产生解码系数。 对于当前宏块，L0范数正则化训练处理产生根据在比特流中发信号的预测模式选择的一组依赖于模式的稀疏正交逆变换。 解码的系数被逆变换，然后与先前解码的宏块组合，以产生重构视频的输出宏块。

公开(公告)号：US20110090952A1

公开(公告)日：2011-04-21

申请号：US12603100

申请日：2009-10-21

申请人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

发明人： Robert A. Cohen ,  Anthony Vetro ,  Huifang Sun

IPC分类号： H04N7/50

CPC分类号： H04N19/60 ,  H04N19/12 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/593 ,  H04N19/91

摘要： A bitstream includes a sequence of frames. Each frame is partitioned into encoded blocks. For each block, a set of paths is determined at a transform angle determined from a transform index in the bitstream. Transform coefficients are obtained from bitstream. The transform coefficients include one DC coefficient for each path. An inverse transform is applied to the transform coefficients to produce a decoded video.

摘要翻译： 比特流包括一系列帧。 每帧被划分成编码块。 对于每个块，以从比特流中的变换索引确定的变换角确定一组路径。 从比特流获得变换系数。 变换系数包括每个路径的一个DC系数。 将逆变换应用于变换系数以产生解码视频。