公开(公告)号：US20150245031A1

公开(公告)日：2015-08-27

申请号：US14707200

申请日：2015-05-08

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/136 ,  H04N19/44 ,  H04N19/176 ,  H04N19/60

CPC classification number: H04N19/176 ,  G06T9/007 ,  H04N19/122 ,  H04N19/136 ,  H04N19/186 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

Abstract: An image coding method of coding an image on a per coding unit basis, the method comprising: applying a frequency transform to luminance data and chrominance data of transform units in the coding unit including predetermined blocks each corresponding to one or more of the transform units; and coding the luminance data and the chrominance data to which the frequency transform has been applied to generate a bitstream in which the luminance data and the chrominance data are grouped on a per predetermined block basis.

Abstract translation: 一种基于每个编码单元对图像进行编码的图像编码方法，所述方法包括：对包括对应于一个或多个变换单元的预定块的编码单元中的变换单元的亮度数据和色度数据应用频率变换; 对已经应用了频率变换的亮度数据和色度数据进行编码，生成亮度数据和色度数据按每个预定块为基础分组的比特流。

公开(公告)号：US20150208088A1

公开(公告)日：2015-07-23

申请号：US14674182

申请日：2015-03-31

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: H04N19/56 ,  H04N19/513 ,  H04N19/172 ,  H04N19/176

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/58 ,  H04N19/61

Abstract: An image coding method includes: deriving a candidate for a motion vector predictor from a co-located motion vector; adding the candidate to a list; selecting the motion vector predictor from the list; and coding a current block and coding a current motion vector, wherein the deriving includes: deriving the candidate by a first derivation scheme in the case of determining that each of a current reference picture and a co-located reference picture is a long-term reference picture; and deriving the candidate by a second derivation scheme in the case of determining that each of the current reference picture and the co-located reference picture is a short-term reference picture.

Abstract translation: 一种图像编码方法包括：从同位置运动矢量导出运动矢量预测器的候选; 将候选人添加到列表中; 从列表中选择运动矢量预测器; 并且对当前块进行编码并对当前运动矢量进行编码，其中所述导出包括：在确定当前参考图像和同位置参考图片中的每一个是长期参考的情况下，通过第一导出方案导出候选 图片; 以及在确定当前参考图片和所述同位置参考图片中的每一个是短期参考图片的情况下，通过第二导出方案导出所述候选者。

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：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：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：US20180352248A1

公开(公告)日：2018-12-06

申请号：US15780448

申请日：2016-10-19

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Takahiro NISHI ,  Tadamasa TOMA ,  Kengo TERADA

IPC: H04N19/513 ,  H04N19/23 ,  H04N19/172 ,  H04N19/124 ,  H04N19/176

Abstract: An image decoding method includes: obtaining, for each of processing units obtained by splitting a current frame, motion vectors assigned to the processing unit; selecting, for each of small regions obtained by splitting a processing unit among the processing units, a motion vector to be used from among the motion vectors assigned to the processing unit, based on the motion vectors and reference frames at different times; generating, for each of the small regions, a predicted image using the motion vector selected for the small region; and decoding each of the small regions using the predicted image generated for the small region.

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：US20150271508A1

公开(公告)日：2015-09-24

申请号：US14730552

申请日：2015-06-04

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Kengo TERADA ,  Takahiro NISHI ,  Hisao SASAI

IPC: H04N19/31 ,  H04N19/503

CPC classification number: H04N19/503 ,  H04N19/105 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/187 ,  H04N19/31

Abstract: An image encoding method includes: determining whether a current picture is a TSA picture or a trailing picture; and encoding a plurality of pictures according to whether the current picture is the TSA picture or a trailing picture. The determining includes: determining the current picture to be the TSA picture when the current picture does not belong to the highest layer and corresponds to a first field, and determining the current picture to be the trailing picture when the current picture belongs to the highest layer or corresponds to a second field.

Abstract translation: 图像编码方法包括：确定当前图像是TSA图像还是尾部图像; 以及根据当前图像是TSA图像还是尾随图像来编码多个图像。 该确定包括：当当前图像不属于最高层并且对应于第一场时，确定当前图像为TSA图像，并且当当前图像属于最高层时确定当前图像为尾部图像 或对应于第二场。

公开(公告)号：US20150139316A1

公开(公告)日：2015-05-21

申请号：US14603769

申请日：2015-01-23

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/50

CPC classification number: H04N19/50 ,  H04N19/105 ,  H04N19/15 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/30 ,  H04N19/58 ,  H04N19/70

Abstract: An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; selecting one of the buffer descriptions for each processing unit that is a picture or a slice, and writing buffer description selecting information for specifying the selected buffer description, into a first header of the processing unit which is included in the coded bitstream; and coding the processing unit using the selected buffer description, and the buffer description defining information includes long-term information for identifying, among a plurality of reference pictures indicated in the buffer descriptions, a reference picture to be assigned as a long-term reference picture.

Abstract translation: 图像编码方法包括：向序列参数集写入定义用于定义多个缓冲器描述的信息的缓冲器描述; 选择作为图像或切片的每个处理单元的缓冲器描述之一，以及将用于指定所选择的缓冲器描述的缓冲器描述选择信息写入被包括在编码比特流中的处理单元的第一标题; 以及使用所选择的缓冲器描述对处理单元进行编码，并且缓冲器描述定义信息包括用于在缓冲器描述中指示的多个参考图像之中识别要被分配为长期参考图像的参考图像的长期信息 。