公开(公告)号：US20150030085A1

公开(公告)日：2015-01-29

申请号：US14509199

申请日：2014-10-08

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/70 ,  H04N19/196 ,  H04N19/13

CPC classification number: H04N19/20 ,  H04N19/117 ,  H04N19/13 ,  H04N19/70 ,  H04N19/82 ,  H04N19/91

Abstract: The image coding method for coding an input image includes: converting, into a bin string, an offset value used in an offset process to be applied to a pixel value of a reconstructed image corresponding to the input image; and performing bypass arithmetic coding on the bin string using a fixed probability.

Abstract translation: 用于编码输入图像的图像编码方法包括：将要应用于与输入图像相对应的重构图像的像素值的偏移处理中使用的偏移值转换为bin串; 并且使用固定概率对所述bin字符串执行旁路算术编码。

公开(公告)号：US20150030075A1

公开(公告)日：2015-01-29

申请号：US14506737

申请日：2014-10-06

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO

IPC: H04N19/583 ,  H04N19/182 ,  H04N19/51 ,  H04N19/174

CPC classification number: H04N19/51 ,  G06T9/004 ,  H04N19/105 ,  H04N19/117 ,  H04N19/137 ,  H04N19/139 ,  H04N19/167 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/52

Abstract: An image coding method is provided for coding, on a per-block basis, pictures each including slices. The method involves estimating a current motion vector which is a motion vector of a current block to be coded and specifies a reference block included in a reference picture; generating a prediction image block by allocating a value of an inside pixel to an outside pixel, the inside pixel being a pixel located inside an associated slice, the outside pixel being a pixel located outside the associated slice and included in the reference block specified by the current motion vector, and the associated slice being a slice included in the reference picture and corresponding to a current slice to be coded which includes the current block; subtracting the prediction image block from the current block to generate a difference image block; and coding the current motion vector and the difference image block.

Abstract translation: 提供一种图像编码方法，用于在每个块的基础上对每个包括切片的图像进行编码。 该方法包括估计作为要编码的当前块的运动矢量的当前运动矢量，并指定包括在参考图像中的参考块; 通过将内部像素的值分配给外部像素来生成预测图像块，所述内部像素是位于相关联的切片内的像素，所述外部像素是位于所述关联切片外部的像素，并且包括在由所述外部像素指定的参考块中 当前运动矢量，并且相关联的切片是包括在参考图片中并且对应于包括当前块的要编码的当前切片的切片; 从当前块减去预测图像块以产生差分图像块; 并对当前运动矢量和差分图像块进行编码。

公开(公告)号：US20140348244A1

公开(公告)日：2014-11-27

申请号：US14456006

申请日：2014-08-11

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Viktor WAHADANIAH ,  Chong Soon LIM ,  Sue Mon Thet NAING ,  Hai Wei SUN ,  Toshiyasu SUGIO ,  Takahiro NISHI ,  Hisao SASAI ,  Youji SHIBAHARA ,  Kyoko TANIKAWA ,  Toru MATSUNOBU ,  Kengo TERADA

IPC: H04N19/51 ,  H04N19/583

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52

Abstract: An image coding method includes: deriving a candidate for a motion vector predictor from a neighboring motion vector; adding the candidate to a list; selecting a motion vector predictor from the list; coding a current block; and coding a current motion vector. In the deriving, the candidate is derived according to a first derivation scheme when each of a current reference picture and a neighboring reference picture is determined to be a long-term reference picture, and the candidate is derived according to a second derivation scheme when each of a current reference picture and a neighboring reference picture is determined to be a short-term reference picture.

公开(公告)号：US20140341296A1

公开(公告)日：2014-11-20

申请号：US14447970

申请日：2014-07-31

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI

IPC: H04N19/51

CPC classification number: H04N19/115 ,  H04N19/103 ,  H04N19/146 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52

Abstract: An image coding method includes: generating a first flag indicating whether or not a motion vector predictor is to be selected from among one or more motion vector predictor candidates; generating a second flag indicating whether or not a motion vector predictor is to be selected from among the one or more motion vector predictor candidates in coding a current block to be coded in a predetermined coding mode, when the first flag indicates that a motion vector predictor is to be selected; and generating a coded signal in which the first flag and the second flag are included in header information, when the first flag indicates that a motion vector predictor is to be selected.

Abstract translation: 图像编码方法包括：生成指示是否从一个或多个运动矢量预测器候选中选择运动矢量预测器的第一标志; 在第一标志指示运动矢量预测器的情况下，产生指示在编码当前要编码的当前块的预定编码模式中的一个或多个运动矢量预测器候选中是否要选择运动矢量预测器的第二标志 被选中; 并且当所述第一标志指示要选择运动矢量预测器时，生成其中所述第一标志和所述第二标志被包括在标题信息中的编码信号。

公开(公告)号：US20140301445A1

公开(公告)日：2014-10-09

申请号：US14305256

申请日：2014-06-16

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/91 ,  H04N19/136 ,  H04N19/17 ,  H04N19/103

CPC classification number: H04N19/91 ,  H04N19/103 ,  H04N19/13 ,  H04N19/136 ,  H04N19/17 ,  H04N19/61

Abstract: An image decoding method is an image decoding method of decoding coded image data, including selecting, based on a type of a decoding target signal, an arithmetic decoding method that is used to decode the decoding target signal, from among a plurality of arithmetic decoding methods that include: a first arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which involves update of the symbol occurrence probability according to a decoding symbol; and a second arithmetic decoding method which is performed based on a symbol occurrence probability obtained according to a context, and which maintains the symbol occurrence probability that is other than 50%.

Abstract translation: 图像解码方法是对编码图像数据进行解码的图像解码方法，包括从多个算术解码方法中选择基于解码对象信号的类型的解码对象信号的解码方法， 包括：基于根据上下文获得的符号发生概率执行并且涉及根据解码符号更新符号发生概率的第一算术解码方法; 以及第二算术解码方法，其基于根据上下文获得的符号发生概率进行，并且维持不到50％的符号发生概率。

公开(公告)号：US20160309171A9

公开(公告)日：2016-10-20

申请号：US14709967

申请日：2015-05-12

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/176 ,  H04N19/159 ,  H04N19/61 ,  H04N19/593 ,  H04N19/124

CPC classification number: H04N19/176 ,  H04N19/124 ,  H04N19/13 ,  H04N19/157 ,  H04N19/159 ,  H04N19/196 ,  H04N19/21 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61

Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, 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 “ref_idx_l0” and “ref_idx_l1”.

公开(公告)号：US20160191919A1

公开(公告)日：2016-06-30

申请号：US15059502

申请日：2016-03-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Hisao SASAI ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Toshiyasu SUGIO

IPC: H04N19/13 ,  H04N19/196 ,  H04N19/157

CPC classification number: H04N19/13 ,  H03M7/4018 ,  H04N19/157 ,  H04N19/167 ,  H04N19/197 ,  H04N19/44

Abstract: An arithmetic decoding method is a method in which a context variable specifying a probability of a possible value of each of elements included in a binary string corresponding to a value of a given variable is initialized and arithmetic decoding is performed, using the context variable. The method includes: determining, from among a plurality of initialization methods as a method of initializing the context variable, an initialization method corresponding to the given variable or a group which includes the given variable; and initializing the context variable using the determined initialization method.

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。