公开(公告)号：US20150103890A1

公开(公告)日：2015-04-16

申请号：US14566100

申请日：2014-12-10

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/196 ,  H04N19/18 ,  H04N19/176 ,  H04N19/124 ,  H04N19/136

CPC classification number: H04N19/196 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463 ,  H04N19/70 ,  H04N19/90

Abstract: An image coding method includes: coding (i) coefficient information, (ii) a first flag indicating whether to quantize one or more blocks using quantization, (iii) a second flag indicating whether the plurality of quantization matrices are included in a sequence parameter set, and (iv) a third flag indicating whether the plurality of quantization matrices are included in a picture parameter set; and quantizing the plurality of coefficients, wherein when the one or more blocks are quantized using a plurality of default matrices, the following are coded in the coding: (i) the first flag indicating that the one or more blocks are quantized using the plurality of quantization matrices, (ii) the second flag indicating that the plurality of quantization matrices are not included in the sequence parameter set, and (iii) the third flag indicating that the plurality of quantization matrices are not included in the picture parameter set.

Abstract translation: 图像编码方法包括：（i）系数信息，（ii）指示是否使用量化来量化一个或多个块的第一标志，（iii）指示所述多个量化矩阵是否包括在序列参数集中的第二标志 ，以及（iv）指示所述多个量化矩阵是否包括在图像参数集中的第三标志; 并且对所述多个系数进行量化，其中当使用多个默认矩阵对所述一个或多个块进行量化时，在所述编码中对以下内容进行编码：（i）指示使用所述多个块来量化所述一个或多个块的所述第一标志 量化矩阵，（ii）指示多个量化矩阵不包括在序列参数集中的第二标志，以及（iii）指示多个量化矩阵不包括在图像参数集中的第三标志。

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：US20160173902A1

公开(公告)日：2016-06-16

申请号：US15051895

申请日：2016-02-24

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/167 ,  H04N19/90 ,  H04N19/176 ,  H04N19/60

CPC classification number: H04N19/44 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/90 ,  H04N19/91

Abstract: An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block.

公开(公告)号：US20160105674A1

公开(公告)日：2016-04-14

申请号：US14976238

申请日：2015-12-21

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/139 ,  H04N19/52 ,  H04N19/573 ,  H04N19/105 ,  H04N19/172

CPC classification number: H04N19/107 ,  H04N19/105 ,  H04N19/124 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/52 ,  H04N19/56 ,  H04N19/567 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

Abstract: An image coding method includes: adding, to a candidate list, a first adjacent motion vector as a candidate for a predicted motion vector to be used for coding the current motion vector; selecting the predicted motion vector from the candidate list; and coding the current motion vector, wherein in the adding, the first adjacent motion vector indicating a position in a first reference picture included in a first reference picture list is added to the candidate list for the current motion vector indicating a position in a second reference picture included in a second reference picture list.

公开(公告)号：US20160007039A1

公开(公告)日：2016-01-07

申请号：US14856965

申请日：2015-09-17

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/513 ,  H04N19/44 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/52 ,  H04N19/573

Abstract: A moving picture coding method includes: coding, using a motion vector, a current block to be coded; generating a plurality of predictive motion vectors; and coding the motion vector using one of the predictive motion vectors, and when a co-located block included in a coded picture and co-located with the current block has two reference motion vectors and reference directions of the two reference motion vectors are the same, a first prediction vector is generated using a first reference motion vector and a second prediction vector is generated using a second reference motion vector in the generating of a plurality of predictive motion vectors.

Abstract translation: 运动图像编码方法包括：使用运动矢量编码要编码的当前块; 生成多个预测运动矢量; 并且使用预测运动矢量之一对运动矢量进行编码，并且当包括在编码图像中并且与当前块共处的共位块具有两个参考运动矢量和两个参考运动矢量的参考方向相同时 使用第一参考运动矢量生成第一预测矢量，并且在生成多个预测运动矢量时使用第二参考运动矢量生成第二预测矢量。

公开(公告)号：US20150304659A1

公开(公告)日：2015-10-22

申请号：US14693340

申请日：2015-04-22

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/13 ,  H04N19/109 ,  H04N19/176

CPC classification number: H04N19/91 ,  H04N19/109 ,  H04N19/119 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

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 “inter_pred_flag”.

Abstract translation: 图像解码方法包括：从多个上下文中确定要处理的当前块中使用的上下文; 以及使用所确定的上下文对与当前块相对应的比特序列执行算术解码，其中在所述确定中：在使用当前块的相邻块的控制参数的条件下确定所述上下文，当所述信号类型为 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，并且第二类型是“inter_pred_flag”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。