公开(公告)号：US11044483B2

公开(公告)日：2021-06-22

申请号：US13389872

申请日：2010-08-11

申请人： Qian Xu ,  Yunfei Zheng ,  Xiaoan Lu ,  Peng Yin ,  Joel Sole

发明人： Qian Xu ,  Yunfei Zheng ,  Xiaoan Lu ,  Peng Yin ,  Joel Sole

IPC分类号： H04N19/00 ,  H04N19/186 ,  H04N19/70 ,  H04N19/147 ,  H04N19/196 ,  H04N19/463 ,  H04N19/176 ,  H04N19/46 ,  H04N19/11 ,  H04N7/00

摘要： Methods and apparatus are provided for improved chroma encoding and decoding. An apparatus includes an encoder for encoding picture data for at least a block in a picture. Multiple partition types are supported for intra chroma coding of the block. The multiple partition types include a set of chroma partition types and a set of luma partition types. The set of chroma partition types are different than the set of luma partition types.

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：US09883207B2

公开(公告)日：2018-01-30

申请号：US13518942

申请日：2010-12-02

申请人： Kiran Misra ,  Joel Sole ,  Peng Yin ,  Xiaoan Lu ,  Yunfei Zheng ,  Qian Xu

发明人： Kiran Misra ,  Joel Sole ,  Peng Yin ,  Xiaoan Lu ,  Yunfei Zheng ,  Qian Xu

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N19/86 ,  H04N19/102 ,  H04N19/107 ,  H04N19/117 ,  H04N19/186 ,  H04N19/44 ,  H04N19/82 ,  H04N19/42 ,  H04N19/85

CPC分类号： H04N19/86 ,  H04N19/102 ,  H04N19/107 ,  H04N19/117 ,  H04N19/186 ,  H04N19/42 ,  H04N19/44 ,  H04N19/82 ,  H04N19/85

摘要： Methods and apparatus are provided for adaptive coupled pre-processing and post-processing filters for video encoding and decoding. The apparatus and method encode input data for a picture into a resultant bitstream, wherein said video encoder comprises a pre-filter and a post-filter coupled to the pre-filter, wherein said pre-filter filters the input data for the picture and the post-filter filters in-loop reconstructed data for the picture.

公开(公告)号：US09648334B2

公开(公告)日：2017-05-09

申请号：US13336799

申请日：2011-12-23

申请人： Yunfei Zheng ,  Wei-Jung Chien ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Wei-Jung Chien ,  Marta Karczewicz

IPC分类号： H04N19/52 ,  H04N19/196 ,  H04N19/105 ,  H04N19/176 ,  H04N19/147 ,  H04N19/46 ,  H04N19/463 ,  H04N19/577

CPC分类号： H04N19/196 ,  H04N19/105 ,  H04N19/147 ,  H04N19/176 ,  H04N19/197 ,  H04N19/46 ,  H04N19/463 ,  H04N19/52 ,  H04N19/577

摘要： This disclosure describes a bi-predictive merge mode in which a bi-predictive video block inherits motion information from two different neighboring blocks, wherein the two different neighboring blocks were each encoded in a uni-predictive mode. Bi-predictive coding may improve the ability to achieve compression in video coding. The described bi-predictive merge mode may increase the number of bi-predictive candidates that can be used in the context of merge mode coding by allowing two separate uni-predicted neighbors to be used to define bi-predictive motion information for a video block.

公开(公告)号：US09516341B2

公开(公告)日：2016-12-06

申请号：US13522347

申请日：2011-01-19

申请人： Yunfei Zheng ,  Peng Yin ,  Xiaoan Lu ,  Qian Xu ,  Joel Sole

发明人： Yunfei Zheng ,  Peng Yin ,  Xiaoan Lu ,  Qian Xu ,  Joel Sole

IPC分类号： H04N7/32 ,  H04N19/57 ,  H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/103 ,  H04N19/117 ,  H04N19/186 ,  H04N19/174 ,  H04N19/523

CPC分类号： H04N19/523 ,  H04N19/103 ,  H04N19/105 ,  H04N19/117 ,  H04N19/13 ,  H04N19/15 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46 ,  H04N19/56 ,  H04N19/57 ,  H04N19/573 ,  H04N19/61 ,  H04N19/70

摘要： There are provided methods and apparatus for reduced complexity template matching prediction for video encoding and decoding. The encoding method encodes at least an image block in a picture using template matching prediction, wherein the template matching prediction is selectably constrained using one or more constraining criterion that reduces a complexity of performing the template matching prediction.

摘要翻译： 提供了用于减少视频编码和解码的复杂度模板匹配预测的方法和装置。 编码方法使用模板匹配预测对至少图像中的图像块进行编码，其中使用减少执行模板匹配预测的复杂度的一个或多个限制标准可选择地约束模板匹配预测。

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：US09288501B2

公开(公告)日：2016-03-15

申请号：US13352175

申请日：2012-01-17

申请人： Yunfei Zheng ,  Wei-Jung Chien ,  Marta Karczewicz

发明人： Yunfei Zheng ,  Wei-Jung Chien ,  Marta Karczewicz

IPC分类号： H04N7/28 ,  H04N19/463 ,  H04N19/196 ,  H04N19/52 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/463 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/52

摘要： This disclosure describes video coding techniques applicable to a bi-predictive inter mode that uses adaptive motion vector prediction (AMVP). In particular, this disclosure describes techniques for encoding or decoding video data in which AMVP is used to code a first motion vector and a second motion vector associated with a current video block that is coded in the bi-predictive inter mode. More specifically, this disclosure describes techniques in which one motion vector of a bi-predictive video block can be used to define a candidate motion vector predictor (MVP) for predicting another motion vector of the bi-predictive video block. In many examples, a scaled version of the first motion vector of the bi-predictive video block is used as the MVP for the second motion vector of the bi-predictive video block. By defining an additional MVP candidate for the second motion vector of a bi-predictive video block, improved compression may be achieved.

摘要翻译： 本公开描述了适用于使用自适应运动矢量预测（AMVP）的双预测帧间模式的视频编码技术。 特别地，本公开描述了用于编码或解码视频数据的技术，其中使用AMVP来编码第一运动矢量和与以双预测帧间编码的当前视频块相关联的第二运动矢量。 更具体地，本公开描述了其中可以使用双预测视频块的一个运动矢量来定义用于预测双预测视频块的另一个运动矢量的候选运动矢量预测器（MVP）的技术。 在许多示例中，双预测视频块的第一运动矢量的缩放版本被用作双预测视频块的第二运动矢量的MVP。 通过为双预测视频块的第二运动矢量定义附加MVP候选，可以实现改进的压缩。

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：US09167270B2

公开(公告)日：2015-10-20

申请号：US13497476

申请日：2010-10-15

申请人： Weiyao Lin ,  Yunfei Zheng ,  Peng Yin ,  Joel Sole ,  Xiaoan Lu ,  Qian Xu

发明人： Weiyao Lin ,  Yunfei Zheng ,  Peng Yin ,  Joel Sole ,  Xiaoan Lu ,  Qian Xu

IPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/85 ,  H04N19/176 ,  H04N19/70 ,  H04N19/147 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N19/17 ,  H04N19/192 ,  H04N19/82

CPC分类号： H04N19/85 ,  H04N19/117 ,  H04N19/14 ,  H04N19/147 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/192 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82

摘要： Methods and apparatus are provided for efficient adaptive filtering for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least a portion of a picture using adaptive filtering. The video encoder includes an adaptive filter for performing the adaptive filtering. A final filter coefficient set used for the adaptive filtering is determined by iteratively estimating a plurality of filter coefficient sets and selecting a last estimated one of the plurality of filter coefficient sets as the final filter coefficient set when a last iteration corresponding to the last estimated one of the plurality of filter coefficient sets results in a quality improvement above a threshold value for the portion.

摘要翻译： 提供了用于视频编码器和解码器的有效自适应滤波的方法和装置。 一种装置包括：视频编码器，用于使用自适应滤波对图像的至少一部分编码图像数据。 视频编码器包括用于执行自适应滤波的自适应滤波器。 用于自适应滤波的最终滤波器系数组通过迭代估计多个滤波器系数组并选择多个滤波器系数组中的最后估计的一个作为当对应于最后估计的最后迭代的最后一次迭代时的最终滤波器系数来确定 多个滤波器系数组的质量改进导致高于该部分的阈值的质量改进。