公开(公告)号：US20160088317A1

公开(公告)日：2016-03-24

申请号：US14960698

申请日：2015-12-07

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Toshiyasu SUGIO ,  Toru MATSUNOBU ,  Kengo TERADA

IPC: H04N19/91 ,  H04N19/174

CPC classification number: H04N19/91 ,  H04N19/13 ,  H04N19/136 ,  H04N19/174 ,  H04N19/436 ,  H04N19/70

Abstract: An image decoding method of decoding, on a per-block basis, a coded image included in a bitstream, includes: performing arithmetic decoding on a current block to be decoded; determining whether or not the current block is at the end of a slice; determining, when it is determined that the current block is not at the end of the slice, whether or not the current block is at the end of a sub-stream which is a structural unit of the image that is different from the slice; and performing arithmetic decoding on a sub-last bit and performing arithmetic decoding termination, when it is determined that the current block is at the end of the sub-stream.

Abstract translation: 一种在每个块的基础上对包括在比特流中的编码图像进行解码的图像解码方法包括：对要解码的当前块执行算术解码; 确定当前块是否在切片的末尾; 确定当确定当前块不在切片结束时，当前块是否处于作为不同于切片的图像的结构单元的子流的结束; 并且当确定当前块位于子流的末尾时，对子最后位执行算术解码并执行算术解码终止。

公开(公告)号：US20150373336A1

公开(公告)日：2015-12-24

申请号：US14838740

申请日：2015-08-28

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC: H04N19/139 ,  H04N19/583 ,  H04N19/196 ,  H04N19/105 ,  H04N19/176

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/119 ,  H04N19/12 ,  H04N19/122 ,  H04N19/13 ,  H04N19/134 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/583 ,  H04N19/593 ,  H04N19/70

Abstract: The image coding method includes: determining a context for a current block to be processed, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is one of “mvd_l0” and “mvd_l1”.

Abstract translation: 图像编码方法包括：从多个上下文中确定要处理的当前块的上下文; 对当前块的控制参数进行算术编码，生成对应于当前块的比特流，其中在确定中：在使用当前块的相邻块的控制参数的条件下确定上下文，当信号 类型是第一类型，相邻块是当前块的左块和上块; 并且在信号类型是第二类型的情况下，在不使用上部块的控制参数的条件下确定上下文，并且第二类型是“mvd_l0”和“mvd_l1”之一的条件。

公开(公告)号：US20150365665A1

公开(公告)日：2015-12-17

申请号：US14824291

申请日：2015-08-12

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kengo TERADA ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toshiyasu SUGIO ,  Toru MATSUNOBU

IPC: H04N19/103 ,  H04N19/91 ,  H04N19/186 ,  H04N19/176

CPC classification number: H04N19/103 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/82 ,  H04N19/91

Abstract: An image coding method includes: performing Sample SAO processing on Y signal, Cb signal, and Cr signal which are included in a target block; performing arithmetic coding on a first flag indicating whether or not an SAO parameter, which indicates details of the SAO processing, of the target block is identical to an SAO parameter for a left neighboring block immediately left of the target block; and performing arithmetic coding on the SAO parameter for the target block, when the SAO parameter for the target block is different from the SAO parameter for the left neighboring block. In the arithmetic coding on the first flag, a single context is used to perform the arithmetic coding on the first flag for the luminance signal, the chrominance Cb signal, and the chrominance Cr signal.

Abstract translation: 图像编码方法包括：对包含在目标块中的Y信号，Cb信号和Cr信号执行采样SAO处理; 执行表示目标块的SAO处理的SAO参数的SAO参数是否与目标块的左侧相邻的块的SAO参数相同的第一标志的算术编码; 并且当目标块的SAO参数与左邻近块的SAO参数不同时，对目标块的SAO参数执行算术编码。 在第一标志的算术编码中，使用单个上下文对亮度信号，色度Cb信号和色度Cr信号的第一标志执行算术编码。

公开(公告)号：US20150117544A1

公开(公告)日：2015-04-30

申请号：US14587126

申请日：2014-12-31

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Hisao SASAI ,  Toru MATSUNOBU

IPC: H04N19/513

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/107 ,  H04N19/503 ,  H04N19/52 ,  H04N19/56

Abstract: An image coding method derives a first candidate having a first motion vector that has been used to code a first block, and derives a second candidate having a second motion vector that has been used to code a second block. It is determined whether a total number of candidates having the first candidate and the second candidate is less than a maximum candidate number, and a third bi-directional candidate is derived when the total number of candidates is less than the maximum candidate number. The third bi-directional candidate has a third motion vector that is identical to the first motion vector, and a fourth motion vector that is identical to the second motion vector. A merging candidate for coding a current block is selected from the candidates having the first candidate, the second candidate, and the third candidate.

Abstract translation: 图像编码方法导出具有用于对第一块进行编码的第一运动矢量的第一候选，并且导出具有用于对第二块进行编码的第二运动矢量的第二候选。 确定具有第一候选和第二候选的候选的总数是否小于最大候选数，并且当候选的总数小于最大候选数时，导出第三双向候选。 第三双向候选具有与第一运动矢量相同的第三运动矢量和与第二运动矢量相同的第四运动矢量。 从具有第一候选，第二候选和第三候选的候选中选择用于编码当前块的合并候选。

公开(公告)号：US20150010063A1

公开(公告)日：2015-01-08

申请号：US14492587

申请日：2014-09-22

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Daisaku KOMIYA ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC: H04N19/172 ,  H04N19/593 ,  H04N19/503 ,  H04N19/124 ,  H04N19/60

CPC classification number: H04N19/124 ,  G06T9/00 ,  G06T9/005 ,  G06T9/007 ,  G06T9/008 ,  H04N19/13 ,  H04N19/134 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/436 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/593 ,  H04N19/60 ,  H04N19/70

Abstract: An image decoding method obtains pieces of coded data which are included in a bitstream and generated by coding tiles obtained by dividing a picture. The pieces of coded data are decoded to generate image data of the tiles. When obtaining the pieces of coded data, tile boundary independence information is further obtained from the bitstream. The tile boundary independence information indicates whether each boundary between the tiles is a first or second boundary. Image data of a first tile is generated by decoding a first code string included in first coded data with reference to decoding information of an already-decoded tile when the tile boundary independence information indicates the first boundary. The first code string is decoded without referring to the decoding information of the already-decoded tile when the tile boundary independence information indicates the second boundary.

Abstract translation: 图像解码方法获得包含在比特流中并通过对通过划分图像而获得的瓦片进行编码而生成的编码数据。 编码数据被解码以生成瓦片的图像数据。 当获得编码数据时，从比特流进一步获得瓦片边界独立性信息。 瓦片边界独立性信息指示瓦片之间的每个边界是否是第一或第二边界。 当瓦片边界独立性信息指示第一边界时，参考已经解码的瓦片的解码信息，对包括在第一编码数据中的第一代码串进行解码，生成第一瓦片的图像数据。 当瓦片边界独立性信息指示第二边界时，第一代码串被解码而不参考已经解码的瓦片的解码信息。

公开(公告)号：US20150003525A1

公开(公告)日：2015-01-01

申请号：US14487158

申请日：2014-09-16

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC: H04N19/50 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/61

Abstract: A decoding method includes: predicting a current block in an image using a reference block, to generate a prediction block; and generating a reconstructed block using the prediction block, wherein the generating includes: filtering for a boundary between the reconstructed block and a decoded neighboring block, using a first filter strength set using first prediction information for prediction of the current block and second prediction information for prediction of the decoded neighboring block; filtering for the boundary using a second filter strength set without using the second prediction information of the current block and the decoded neighboring block; and switching whether to execute the second filtering, based on the boundary, wherein the first filtering is in-loop filtering in which a filtered reconstructed block is used as a reference block for another block, and the second filtering is post filtering outside the loop.

Abstract translation: 解码方法包括：使用参考块预测图像中的当前块，以产生预测块; 以及使用所述预测块生成重建块，其中，所述生成包括：使用使用用于预测当前块的第一预测信息和使用所述第一预测信息的第二预测信息，使用使用第一滤波器强度来设置所述重构块和解码相邻块之间的边界 解码相邻块的预测; 使用第二滤波器强度集合对边界进行滤波，而不使用当前块和解码的相邻块的第二预测信息; 以及基于所述边界来切换是否执行所述第二滤波，其中所述第一滤波是环路滤波，其中滤波的重构块被用作另一块的参考块，并且所述第二滤波是在所述环外部进行后滤波。