公开(公告)号：US10992958B2

公开(公告)日：2021-04-27

申请号：US13336682

申请日：2011-12-23

申请人： Peisong Chen ,  Yunfei Zheng ,  Rajan Laxman Joshi ,  Muhammed Zeyd Coban ,  Marta Karczewicz

发明人： Peisong Chen ,  Yunfei Zheng ,  Rajan Laxman Joshi ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC分类号： H04N19/60 ,  H04N19/46 ,  H04N19/129 ,  H04N19/176 ,  H04N19/159 ,  H04N19/147 ,  H04N19/122

摘要： A video encoder may transform residual data by using a transform selected from a group of transforms. The transform is applied to the residual data to create a two-dimensional array of transform coefficients. A scanning mode is selected to scan the transform coefficients in the two-dimensional array into a one-dimensional array of transform coefficients. The combination of transform and scanning mode may be selected from a subset of combinations that is based on an intra-prediction mode. The scanning mode may also be selected based on the transform used to create the two-dimensional array. The transforms and/or scanning modes used may be signaled to a video decoder.

公开(公告)号：US09930366B2

公开(公告)日：2018-03-27

申请号：US13267762

申请日：2011-10-06

申请人： Yunfei Zheng ,  Muhammed Zeyd Coban ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/85 ,  H04N19/105 ,  H04N19/593 ,  H04N19/117 ,  H04N19/136 ,  H04N19/182 ,  H04N19/80

CPC分类号： H04N19/85 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/182 ,  H04N19/593 ,  H04N19/80

摘要： This disclosure describes intra-smoothing techniques for intra-coding of video data. In one example, a video encoder is configured to determine a plurality of prediction samples for intra-predictive coding of a block to be coded in a video frame, calculate a local statistic for a first prediction sample of the prediction samples, select a filter from a plurality of filters based on the local statistic, and apply the selected filter to the first prediction sample. The video encoder may also be configured to calculate at least one local statistic for each prediction sample of the prediction samples, select a filter from a plurality of different filters based on the at least one local statistic for each prediction sample, and apply each selected filter to the corresponding prediction sample to generate the filtered version of the prediction sample. Embodiments further include video decoders and method of decoding encoded video signals.

公开(公告)号：US09445093B2

公开(公告)日：2016-09-13

申请号：US13536762

申请日：2012-06-28

申请人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N7/30 ,  H04N19/60 ,  H04N19/176 ,  H04N19/129 ,  H04N19/17

CPC分类号： H04N19/60 ,  H04N19/129 ,  H04N19/17 ,  H04N19/176

摘要： A method for encoding transform coefficients in a video encoding process includes dividing a block of transform coefficients into a plurality of zones, determining a scan order for each of the plurality of zones, and performing a scan on each of the transform coefficients in each of the plurality of zones according to their respective determined scan order. In another example, a method for decoding transform coefficients in a video encoding process includes receiving a one-dimensional array of transform coefficients, determining a scan order for each of a plurality of sections of the one-dimensional array, wherein each section of the one-dimensional array corresponds to one of a plurality of zones defining a block of transform coefficients, and performing a scan on each of the transform coefficients in each of the section of the one dimensional array of zones according to their respective determined scan order.

摘要翻译： 一种用于对视频编码处理中的变换系数进行编码的方法包括：将变换系数块划分成多个区域，确定多个区域中的每个区域的扫描顺序，以及对每个区域中的每个变换系数执行扫描 多个区域根据它们各自确定的扫描顺序。 在另一示例中，用于解码视频编码处理中的变换系数的方法包括接收变换系数的一维阵列，确定一维阵列的多个部分中的每一个的扫描顺序，其中，所述一维阵列的每个部分 维数组对应于定义变换系数块的多个区域中的一个，并且根据各自确定的扫描顺序对区域的一维阵列的每个区段中的每一个对每个变换系数执行扫描。

公开(公告)号：US09282338B2

公开(公告)日：2016-03-08

申请号：US13487996

申请日：2012-06-04

申请人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N7/32 ,  H04N19/40 ,  H04N19/52 ,  H04N7/26 ,  H04N19/51

CPC分类号： H04N19/40 ,  H04N19/52

摘要： A unified candidate block set for both adaptive motion vector prediction (AMVP) mode and merge mode for use in inter-prediction is proposed. In general, the same candidate block set is used regardless of which motion vector prediction mode (e.g., merge mode or AMVP mode) is used. In other examples of this disclosure, one candidate block in a set of candidate blocks is designated as an additional candidate block. The additional candidate block is used if one of the other candidate blocks is unavailable. Also, the disclosure proposes a checking pattern where the left candidate block is checked before the below left candidate block. Also, the above candidate block is checked before the right above candidate block.

公开(公告)号：US09131239B2

公开(公告)日：2015-09-08

申请号：US13487914

申请日：2012-06-04

申请人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Xianglin Wang ,  Marta Karczewicz

IPC分类号： H04N7/32 ,  H04N7/26 ,  H04N19/40 ,  H04N19/52 ,  H04N19/51

CPC分类号： H04N19/40 ,  H04N19/52

摘要： A unified candidate block set for both adaptive motion vector prediction (AMVP) mode and merge mode for use in inter-prediction is proposed. In general, the same candidate block set is used regardless of which motion vector prediction mode (e.g., merge mode or AMVP mode) is used. In other examples of this disclosure, one candidate block in a set of candidate blocks is designated as an additional candidate block. The additional candidate block is used if one of the other candidate blocks is unavailable. Also, the disclosure proposes a checking pattern where the left candidate block is checked before the below left candidate block. Also, the above candidate block is checked before the right above candidate block.

摘要翻译： 提出了一种用于自适应运动矢量预测（AMVP）模式和用于帧间预测的合并模式的统一候选块集合。 通常，使用相同的候选块集合，而不管使用哪个运动矢量预测模式（例如，合并模式或AMVP模式）。 在本公开的其他示例中，一组候选块中的一个候选块被指定为附加候选块。 如果其他候选块之一不可用，则使用附加候选块。 此外，本公开提出了在左下候选块之前检查左候选块的检查模式。 此外，在候选块之前检查上述候选块。

公开(公告)号：US20120163472A1

公开(公告)日：2012-06-28

申请号：US13332300

申请日：2011-12-20

申请人： Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Yunfei Zheng ,  Marta Karczewicz

发明人： Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Yunfei Zheng ,  Marta Karczewicz

IPC分类号： H04N7/26

CPC分类号： H04N19/18 ,  H04N19/129 ,  H04N19/13 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61

摘要： An apparatus is disclosed for coding coefficients associated with a block of video data, including a video coder configured to code information that identifies a first scanning order associated with the block if a position of any of one or more of the coefficients within the block, starting with a first coefficient within the block and ending with a last non-zero coefficient within the block according to the first scanning order, and proceeding according to the first scanning order, according to the first scanning order is different than a position of the respective coefficient within the block according to a second scanning order, and avoid coding the information if the position of each of the one or more of the coefficients within the block according to the first scanning order is the same as the position of the respective coefficient within the block according to the second scanning order.

摘要翻译： 公开了一种用于对与视频数据块相关联的系数进行编码的装置，包括视频编码器，视频编码器被配置为如果块内的一个或多个系数中的任何一个的位置开始，则识别与该块相关联的第一扫描顺序的信息，起始 具有块内的第一系数并且根据第一扫描顺序以块内的最后非零系数结束，并且根据第一扫描顺序进行，根据第一扫描顺序不同于相应系数的位置 根据第二扫描顺序在块内，并且如果根据第一扫描顺序的块内的一个或多个系数中的每一个的位置与块内的相应系数的位置相同，则避免对信息进行编码 根据第二扫描顺序。

公开(公告)号：US20120140814A1

公开(公告)日：2012-06-07

申请号：US13303015

申请日：2011-11-22

申请人： Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Yunfei Zheng ,  Rajan Laxman Joshi ,  Marta Karczewicz

发明人： Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Yunfei Zheng ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/13 ,  H03M7/30 ,  H03M7/40 ,  H03M7/4018 ,  H03M7/6035 ,  H04N19/176 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

摘要： In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to a scanning order associated with the block when the scanning order comprises a first scanning order, and code interchanged x- and y-coordinates that indicate the position of the last non-zero coefficient within the block according to the scanning order when the scanning order comprises a second scanning order, wherein the second scanning order is different than the first scanning order.

摘要翻译： 在一个示例中，公开了一种用于在视频编码过程期间对与视频数据块相关联的系数进行编码的装置，其中所述装置包括视频编码器，其被配置为编码指示最后非零位置的x坐标和y坐标 当扫描顺序包括第一扫描顺序时，根据与块相关联的扫描顺序，块内的系数，以及根据扫描指示块内的最后非零系数的位置的代码交换的x和y坐标 当扫描顺序包括第二扫描顺序时，其中第二扫描顺序不同于第一扫描顺序。

公开(公告)号：US20120082224A1

公开(公告)日：2012-04-05

申请号：US13248968

申请日：2011-09-29

申请人： Geert Van Der Auwera ,  Xianglin Wang ,  Muhammed Zeyd Coban ,  Marta Karczewicz ,  Yunfei Zheng

发明人： Geert Van Der Auwera ,  Xianglin Wang ,  Muhammed Zeyd Coban ,  Marta Karczewicz ,  Yunfei Zheng

IPC分类号： H04N7/32

CPC分类号： H04N19/85 ,  H04N19/117 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/82

摘要： This disclosure relates to techniques for reducing the amount of additional data encoded with a block encoded using intra-predictive coding. Particularly, the techniques provide apparatus and methods of applying a smoothing filter to prediction samples used in intra-predictive coding. For example, in fixed mode-dependent intra-predictive coding, a video encoder may determine the type of smoothing filter applied to prediction samples based on block size and intra-prediction mode combination associated with the current block, where the combination is used to look up a filter in a first filter table. In adaptive mode-dependent intra-predictive coding, the encoder uses two filters, one from the first filter table and another from a second filter table, applies both filters, and determines which yields better results. When the second filter table filter yields better results, the encoder encodes a filtering indication. When a filter from the first filter table is used, no filtering indication is encoded.

摘要翻译： 本公开涉及用于减少使用内部预测编码编码的块编码的附加数据的量的技术。 特别地，这些技术提供了将平滑滤波器应用于在帧内预测编码中使用的预测样本的装置和方法。 例如，在固定模式相关的帧内预测编码中，视频编码器可以基于与当前块相关联的块大小和帧内预测模式组合来确定应用于预测样本的平滑滤波器的类型，其中组合被用于查找 在第一个过滤器表中添加一个过滤器。 在自适应模式相关的帧内预测编码中，编码器使用两个滤波器，一个来自第一个滤波器表，另一个来自第二个滤波器表，两个滤波器都应用两个滤波器，并确定哪个产生更好的结果。 当第二滤波器表滤波器产生更好的结果时，编码器对滤波指示进行编码。 当使用来自第一滤波器表的滤波器时，不对滤波指示进行编码。

公开(公告)号：US09237355B2

公开(公告)日：2016-01-12

申请号：US12945170

申请日：2010-11-12

申请人： Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen

发明人： Wei-Jung Chien ,  Marta Karczewicz ,  Peisong Chen

IPC分类号： H04N11/02 ,  H04N19/58 ,  H04N19/52 ,  H04N19/176 ,  H04N19/147 ,  H04N19/172 ,  H04N19/46 ,  H04N19/102 ,  H04N19/61 ,  H04N19/523

CPC分类号： H04N19/58 ,  H04N19/102 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/523 ,  H04N19/61

摘要： A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.

摘要翻译： 视频编码器可以通过在八分之一像素和四分之一像素精度的运动矢量之间进行自适应选择来对视频数据进行编码，并且将所选精度发信号。 在一个示例中，一种装置包括：视频编码器，当使用八分之一像素的精确运动矢量被确定为优于一块时，使用八分之一像素精度的运动矢量对视频数据块进行编码 并且生成指示使用该块的八分之一像素精度运动矢量的信号值，以及输出接口以输出编码块和信号值。 视频解码器可以被配置为接收信号值和编码块，分析信号值以确定块是使用八分之一像素精度还是四分之一像素精度进行编码，并且基于该确定对块进行解码 。

公开(公告)号：US08923395B2

公开(公告)日：2014-12-30

申请号：US13247812

申请日：2011-09-28

申请人： Xianglin Wang ,  Marta Karczewicz ,  Wei-Jung Chien

发明人： Xianglin Wang ,  Marta Karczewicz ,  Wei-Jung Chien

IPC分类号： H04N7/12 ,  H04N19/11 ,  H04N19/70 ,  H04N19/61 ,  H04N19/593 ,  H04N19/157 ,  H04N19/463 ,  H04N19/176

CPC分类号： H04N19/50 ,  H04N19/11 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

摘要： In general, techniques of this disclosure are related to determining a prediction characteristic associated with a coding unit of video data, wherein determining the prediction characteristic includes determining a prediction type that defines a number of prediction units associated with the coding unit. Techniques of this disclosure may also be related to generating a set of available intra-prediction modes for the coding unit based on the prediction characteristic, selecting an intra-prediction mode from the available intra-prediction modes, and applying one of the available intra-prediction modes to code the coding unit.

摘要翻译： 通常，本公开的技术涉及确定与视频数据的编码单元相关联的预测特性，其中确定预测特性包括确定定义与编码单元相关联的预测单元的数量的预测类型。 本公开的技术还可以涉及基于预测特性生成用于编码单元的一组可用的帧内预测模式，从可用的帧内预测模式中选择帧内预测模式，以及应用可用的帧内预测模式之一， 编码单元的预测模式。