公开(公告)号：US20140334544A1

公开(公告)日：2014-11-13

申请号：US14446459

申请日：2014-07-30

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Virginie DRUGEON ,  Youji SHIBAHARA ,  Takahiro NISHI ,  Hisao SASAI ,  Kyoko TANIKAWA

IPC: H04N19/593 ,  H04N19/44 ,  H04N19/136

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/44

Abstract: A spatial prediction method capable of reducing the complexity of spatial prediction includes: detecting an edge (E) overlapping the current block by obtaining a horizontal gradient (Gy) and a vertical gradient (Gx) between pixels within a block adjacent to the current block; calculating an integer slope of the edge; determining, for each pixel position within the current block, a sub-pel position being an intersection between (i) a line that has the integer slope and passes through the pixel position and (ii) a boundary of the adjacent block; and predicting, for each pixel position, a pixel value at the pixel position based on a pixel value interpolated in the sub-pel position, wherein the boundary of the adjacent block is a row or a column that is the closest to the current block, among rows or columns of pixels included in the adjacent block.

Abstract translation: 能够降低空间预测的复杂度的空间预测方法包括：通过获得与当前块相邻的块内的像素之间的水平梯度（Gy）和垂直梯度（Gx）来检测与当前块重叠的边缘（E） 计算边缘的整数斜率; 确定对于当前块中的每个像素位置，子像素位置是（i）具有整数斜率并通过像素位置的线和（ii）相邻块的边界之间的交点; 并且对于每个像素位置，基于在子像素位置内插的像素值来预测像素位置处的像素值，其中相邻块的边界是最接近当前块的行或列， 包括在相邻块中的像素列或像素列中。

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。

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 。

公开(公告)号：US20150103879A1

公开(公告)日：2015-04-16

申请号：US14575153

申请日：2014-12-18

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

CPC classification number: H04N19/91 ,  G06T9/00 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593 ,  H04N19/70

Abstract: An encoding and decoding apparatus is provided for performing arithmetic encoding and arithmetic decoding. The encoding apparatus encodes in a first bitstream first last position information, indicating a horizontal position and a vertical position of a last non-zero coefficient in a predetermined order from among a plurality of coefficients within a first current block to be encoded in a first picture. The decoding apparatus decodes second last position information, indicating a horizontal position and a vertical position of a last non-zero coefficient in a predetermined order from among a plurality of coefficients within a second current block to be decoded in a second picture.

Abstract translation: 提供了一种用于执行算术编码和算术解码的编码和解码装置。 编码装置以第一比特流对第一最后位置信息进行编码，从第一当前块内的多个系数中以预定顺序指示最后一个非零系数的水平位置和垂直位置，以便编码在第一图像中 。 解码装置从第二图像中要解码的第二当前块内的多个系数中以预定顺序解码指示最后非零系数的水平位置和垂直位置的第二最后位置信息。

公开(公告)号：US20140362929A1

公开(公告)日：2014-12-11

申请号：US14470233

申请日：2014-08-27

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

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

IPC: H04N19/44 ,  H04N19/42 ,  H04N19/46

CPC classification number: H04N19/15 ,  G06T9/00 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/70

Abstract: A decoding method of decoding encoded data per unit from among units included in a picture is provided. The decoding method decodes a first flag which indicates whether a removal time of the encoded data from a buffer is set per unit. The buffer is for storing the encoded data. The image decoding method further decodes a second flag indicating whether an interval between removal times of the units is constant when the removal time is set per unit. The image decoding method removes the encoded data from the buffer per unit and at an interval according to the second flag, and decodes the removed encoded data.

Abstract translation: 提供了从包括在图像中的单元中的每单位编码数据进行解码的解码方法。 解码方法解码指示是否每单位设置来自缓冲器的编码数据的去除时间的第一标志。 缓冲区用于存储编码数据。 图像解码方法进一步解码指示当每单位设置移除时间时单位的去除时间间隔是否恒定的第二标志。 图像解码方法根据第二标志从每个单元和间隔的缓冲器中去除编码数据，并对所移除的编码数据进行解码。

公开(公告)号：US20140348245A1

公开(公告)日：2014-11-27

申请号：US14458360

申请日：2014-08-13

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: H04N19/56 ,  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：US20140341295A1

公开(公告)日：2014-11-20

申请号：US14446420

申请日：2014-07-30

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/51 ,  H04N19/593

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/124 ,  H04N19/13 ,  H04N19/137 ,  H04N19/15 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/44 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/56 ,  H04N19/567 ,  H04N19/593 ,  H04N19/61

Abstract: A moving picture coding apparatus includes an intra-inter prediction unit which calculates a second motion vector by performing a scaling process on a first motion vector of a temporally neighboring corresponding block, when selectively adding, to a list, a motion vector of each of one or more corresponding blocks each of which is either a block included in a current picture to be coded and spatially neighboring a current block to be coded or a block included in a picture other than the current picture and temporally neighboring the current block, determines whether the second motion vector has a magnitude that is within a predetermined magnitude or not within the predetermined magnitude, and adds the second motion vector to the list when the intra-inter prediction unit determines that the second motion vector has a magnitude that is within the predetermined magnitude range.