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公开(公告)号：US10560712B2
公开(公告)日：2020-02-11
申请号：US15587044
申请日：2017-05-04
发明人： Feng Zou , Jianle Chen , Marta Karczewicz , Xiang Li , Hsiao-Chiang Chuang , Wei-Jung Chien
IPC分类号： H04N19/513 , H04N19/124 , H04N19/18 , H04N19/44 , H04N19/567 , H04N19/91
摘要： An example method includes obtaining, for a current block of video data, values of motion vectors (MVs) of an affine motion model of a neighboring block of video data; deriving, from the values of the MVs of the affine motion model of the neighboring block, values of predictors for MVs of an affine motion model of the current block; decoding, from a video bitstream, a representation of differences between the values of the MVs of the affine motion model for the current block and the values of the predictors; determining the values of the MVs of the affine motion model for the current block from the values of the predictors and the decoded differences; determining, based on the determined values of the MVs of the affine motion model for the current block, a predictor block of video data; and reconstructing the current block based on the predictor block.
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公开(公告)号：US10178395B2
公开(公告)日：2019-01-08
申请号：US14869581
申请日：2015-09-29
发明人： Rajan Laxman Joshi , Vadim Seregin , Wei Pu , Marta Karczewicz , Feng Zou
IPC分类号： H04N19/186 , H04N19/13 , H04N19/93 , H04N19/176 , H04N19/103 , H04N19/70 , H04N19/91
摘要： A method of decoding video data, the method comprising receiving a run-length sequence indicative of a binary vector, the binary vector comprising indications of locations of escape samples in a block of video data encoded using a palette-based coding mode, decoding the run-length sequence to obtain the binary vector, and decoding the block of video data using the binary vector. The method of claim 1 may further comprise receiving palette entries for the block of video data receiving one or more escape samples, and receiving a plurality of flags indicating the palette mode for each respective pixel in the block of video data.
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公开(公告)号：US10097837B2
公开(公告)日：2018-10-09
申请号：US14878697
申请日：2015-10-08
发明人： Wei Pu , Feng Zou , Rajan Laxman Joshi , Vadim Seregin , Marta Karczewicz
IPC分类号： H04N19/176 , H04N19/13 , H04N19/44 , H04N19/90 , H04N19/93 , H04N19/50 , H04N19/503 , H04N19/70 , H04N19/46 , H04N19/593 , H04N19/186 , H04N19/48
摘要： A video decoder may obtain a syntax element from a bitstream comprising an encoded representation of a block of video data. The block comprises a series of runs, each of which may consist of one pixel or two or more consecutive pixels. Furthermore, the video decoder may obtain a set of palette run length syntax elements indicating lengths of one or more of the runs. The video decoder may determine, based on the syntax element, that the palette run length syntax elements do not include a palette run length syntax element indicating a length of the first run. Rather, the video decoder determines, based on the lengths indicated by the set of palette run syntax elements, the length of the first run. The video decoder may determine, based on the palette sample modes of the pixels, palette indices of the pixels, each indicating an entry in a palette.
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公开(公告)号：US09877029B2
公开(公告)日：2018-01-23
申请号：US14876495
申请日：2015-10-06
发明人： Marta Karczewicz , Feng Zou , Rajan Laxman Joshi , Vadim Seregin , Wei Pu
IPC分类号： H04N11/02 , H04N19/13 , H04N19/176 , H04N19/136 , H04N19/70 , H04N19/50 , H04N19/14 , H04N19/182 , H04N19/593
CPC分类号： H04N19/13 , H04N19/136 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/50 , H04N19/593 , H04N19/70
摘要： An example method of coding video data includes determining, for a current block of video data, a palette that includes a plurality of entries that each corresponds to a respective color value; determining a particular entry in the palette that is predicted to correspond to a color value of a current pixel of the current block; selecting a binarization from a plurality of binarizations; and coding, using the selected binarization, an index that indicates which entry in the palette corresponds to a color value for a current pixel of the current block, wherein coding the index using a first binarization of the plurality of binarizations comprises coding a syntax element that indicates whether the index is equal to the particular entry, and wherein coding the index using a second binarization of the plurality of binarizations comprises coding the index using a variable length code without coding the syntax element.
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公开(公告)号：US09848198B2
公开(公告)日：2017-12-19
申请号：US14875398
申请日：2015-10-05
发明人： Wei Pu , Marta Karczewicz , Vadim Seregin , Feng Zou , Rajan Laxman Joshi , Joel Sole Rojals
IPC分类号： H04B1/66 , H04N19/186 , H04N19/182 , H04N19/70 , H04N19/593
CPC分类号： H04N19/186 , H04N19/182 , H04N19/593 , H04N19/70
摘要： Techniques are described where a current pixel that cannot be palette mode coded in copy above mode and is not coded in a copy index mode is palette mode coded based on a palette index of a diagonal pixel.
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公开(公告)号：US20170272782A1
公开(公告)日：2017-09-21
申请号：US15463398
申请日：2017-03-20
发明人： Xiang Li , Jianle Chen , Li Zhang , Xin Zhao , Hsiao-Chiang Chuang , Feng Zou , Marta Karczewicz
IPC分类号： H04N19/96 , H04N19/583
CPC分类号： H04N19/96 , H04N19/103 , H04N19/119 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/30 , H04N19/45 , H04N19/46 , H04N19/50 , H04N19/51 , H04N19/583 , H04N19/593 , H04N19/61 , H04N19/91
摘要： An example device for decoding video data includes a video decoder configured to decode one or more syntax elements at a region-tree level of a region-tree of a tree data structure for a coding tree block (CTB) of video data, the region-tree having one or more region-tree nodes including region-tree leaf and non-leaf nodes, each of the region-tree non-leaf nodes having at least four child region-tree nodes, decode one or more syntax elements at a prediction-tree level for each of the region-tree leaf nodes of one or more prediction trees of the tree data structure for the CTB, the prediction trees each having one or more prediction-tree leaf and non-leaf nodes, each of the prediction-tree non-leaf nodes having at least two child prediction-tree nodes, each of the prediction leaf nodes defining respective coding units (CUs), and decode video data for each of the CUs.
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公开(公告)号：US20160227247A1
公开(公告)日：2016-08-04
申请号：US15009678
申请日：2016-01-28
发明人： Feng Zou , Rajan Laxman Joshi , Marta Karczewicz , Vadim Seregin , Wei Pu
IPC分类号： H04N19/597 , H04N19/124 , H04N19/186 , H04N19/44 , H04N19/182 , H04N19/593 , H04N19/117 , H04N19/105 , H04N19/13 , H04N19/96 , H04N19/137 , H04N19/52 , H04N19/93 , H04N19/61
摘要： In one example, a device includes a memory configured to store video data and a video decoder configured to decode an exponential Golomb codeword representative of at least a portion of a value for an escape pixel of a palette-mode coded block of video data, the video decoder is configured to decode the exponential Golomb codeword using exponential Golomb with parameter 3 decoding, and decode the block using the value for the escape pixel.
摘要翻译： 在一个示例中，设备包括被配置为存储视频数据的存储器和被配置为解码表示调色板模式编码视频数据块的转义像素的值的至少一部分的指数哥伦布码字的视频解码器， 视频解码器被配置为使用具有参数3解码的指数哥伦布解码指数哥伦布码字，并且使用转义像素的值来解码该块。
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8.发明申请公开(公告)号：US20160100177A1
公开(公告)日：2016-04-07
申请号：US14875486
申请日：2015-10-05
发明人： Wei Pu , Marta Karczewicz , Feng Zou , Rajan Laxman Joshi , Vadim Seregin , Joel Sole Rojals
IPC分类号： H04N19/186 , H04N19/44 , H04N19/176
CPC分类号： H04N19/186 , H03M7/40 , H04N19/176 , H04N19/593 , H04N19/61 , H04N19/70 , H04N19/91 , H04N19/93 , H04N19/94
摘要： In an example, a method of decoding video data using palette mode may include receiving a palette mode encoded block of video data of a picture. The method may include receiving encoded palette mode information for the palette mode encoded block of video data. The encoded palette mode information may be encoded according to a kth order non-uniform truncated exponential-Golomb (TEGk) coding scheme and includes a unary prefix code word and a suffix code word. The method may include entropy decoding the encoded palette mode information using the kth order non-uniform truncated exponential-Golomb (TEGk) coding scheme. The kth order non-uniform TEGk coding scheme is different from a kth order exponential-Golomb (EGk) coding scheme and a kth order truncated exponential-Golomb (TEGk) coding scheme. The method may include decoding the palette mode encoded block of video data using the decoded palette mode information.
摘要翻译： 在一个示例中，使用调色板模式对视频数据进行解码的方法可以包括接收图片的视频数据的调色板模式编码块。 该方法可以包括接收用于调色板模式编码的视频数据块的编码调色板模式信息。 编码调色板模式信息可以根据第k阶非均匀截取指数 - 哥伦布（TEGK）编码方案进行编码，并且包括一字前缀码字和后缀码字。 该方法可以包括使用第k阶非均匀截断指数哥伦布（TEGK）编码方案熵解码编码的调色板模式信息。 第k阶非均匀TEGK编码方案与第k阶指数 - 哥伦布（EGK）编码方案和第k阶截取指数 - 哥伦布（TEGK）编码方案不同。 该方法可以包括使用解码的调色板模式信息解码调色板模式编码的视频数据块。
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公开(公告)号：US20150373339A1
公开(公告)日：2015-12-24
申请号：US14743898
申请日：2015-06-18
发明人： Feng Zou , Marta Karczewicz , Joel Sole Rojals , Rajan Laxman Joshi , Wei Pu , Vadim Seregin
IPC分类号： H04N19/176 , H04N19/587 , H04N19/593 , H04N19/93 , H04N19/105 , H04N19/186
CPC分类号： H04N19/176 , H04N19/105 , H04N19/119 , H04N19/182 , H04N19/186 , H04N19/48 , H04N19/587 , H04N19/593 , H04N19/70 , H04N19/93
摘要： An example method of decoding video data includes determining a palette for decoding a block of video data, where the palette includes one or more palette entries each having a respective palette index, determining a first plurality of palette indices for first pixels of the block of video data, enabling a palette coding mode based on a run length of a run of a second plurality of palette indices for second pixels of the block of video data being decoded relative to the first plurality of palette indices meeting a run length threshold, and decoding the run of the second plurality of palette indices relative to the first plurality of palette indices using the palette coding mode.
摘要翻译： 解码视频数据的示例性方法包括确定用于解码视频数据块的调色板，其中调色板包括一个或多个调色板条目，每个调色板条目具有相应的调色板索引，确定视频块的第一像素的第一多个调色板索引 数据，基于针对视频数据块的第二像素的第二多个调色板索引的游程的游程长度相对于满足游程长度阈值的第一多个调色板索引进行解码，启用调色板编码模式，以及对 使用调色板编码模式相对于第一多个调色板索引运行第二多个调色板索引。
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公开(公告)号：US20150189302A1
公开(公告)日：2015-07-02
申请号：US14586805
申请日：2014-12-30
发明人： Wei Pu , Marta Karczewicz , Joel Sole Rojals , Liwei Guo , Rajan Laxman Joshi , Feng Zou
IPC分类号： H04N19/44 , H04N19/93 , H04N19/597
CPC分类号： H04N19/583 , H04N19/124 , H04N19/127 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/593 , H04N19/93 , H04N19/94
摘要： In palette-based coding, a video coder may form a so-called “palette” as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a number of entries in a palette, and determining whether a block of video data includes any escape pixels not associated with any entry in the palette. The method includes responsive to determining that the number of entries is one, and that the block does not include any escape pixels, bypassing decoding index values for the pixel values of the block, and determining the pixel values of the block to be equal to the one entry in the palette.
摘要翻译： 在基于调色板的编码中，视频编码器可以形成所谓的“调色板”，作为表示给定块的视频数据的颜色表。 视频编码器可以编码当前视频数据块的一个或多个像素值的索引值，其中索引值指示调色板中表示当前块的像素值的条目。 一种方法包括确定调色板中的条目数，以及确定视频数据块是否包括与调色板中的任何条目不相关联的任何转义像素。 该方法包括响应于确定条目的数量是一个，并且块不包括任何逃逸像素，绕过块的像素值的解码索引值，并且确定块的像素值等于 调色板中的一个条目。
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