公开(公告)号：US20160173911A1

公开(公告)日：2016-06-16

申请号：US15050837

申请日：2016-02-23

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/91

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.

Abstract translation: 一种用于逐块地对图像进行编码的图像编码方法包括：针对包括在编码对象块中并且包括多个系数的多个子块中的每个子块选择用于执行算术的上下文 基于位于所述编码对象系数周围的至少一个参考系数，对从所述子块对应的上下文集合中指示包含在所述子块中的编码对象系数的参数进行编码，所述编码对象块是变换 单元; 以及使用关于所选择的上下文的概率信息对表示编码目标系数的参数进行算术编码，其中，在所述选择中，从所述上下文集中选择所述上下文，所述上下文集对应于（i）表示 编码对象块中的子块的水平方向的位置和（ii）表示编码对象块中的子块的垂直方向的位置的值。

公开(公告)号：US20160094850A1

公开(公告)日：2016-03-31

申请号：US14957784

申请日：2015-12-03

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/176 ,  H04N19/50 ,  H04N19/124 ,  H04N19/93 ,  H04N19/172 ,  H04N19/61

CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/154 ,  H04N19/17 ,  H04N19/172 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/61 ,  H04N19/90 ,  H04N19/93

Abstract: An image coding method includes: generating a predicted block; calculating a residual block; calculating quantized coefficients by performing transform and quantization on the residual block; calculating a coded residual block by performing inverse quantization and inverse transform on the quantized coefficients; generating a temporary coded block; determining whether or not an offset process is required, to generate first flag information indicating a result of the determination; executing the offset process on the temporary coded block when it is determined that the offset process is required; and performing variable-length coding on the quantized coefficients and the first flag information.

Abstract translation: 图像编码方法包括：生成预测块; 计算残差块; 通过对残差块进行变换和量化来计算量化系数; 通过对量化系数进行逆量化和逆变换来计算编码残差块; 生成临时编码块; 确定是否需要偏移处理，以产生指示确定结果的第一标志信息; 当确定需要偏移处理时，对临时编码块执行偏移处理; 以及对量化系数和第一标志信息执行可变长度编码。

公开(公告)号：US20160007027A1

公开(公告)日：2016-01-07

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”.

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，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“ref_idx_10”和“ref_idx_l1”之一的条件。

公开(公告)号：US20150373335A1

公开(公告)日：2015-12-24

申请号：US14837546

申请日：2015-08-27

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: H04N19/13 ,  H04N19/103 ,  H04N19/105 ,  H04N19/136 ,  H04N19/139 ,  H04N19/176 ,  H04N19/196 ,  H04N19/583 ,  H04N19/70 ,  H04N19/91

Abstract: The image coding method includes: determining a context in a current block in the image, 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 (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “no_residual_data_flag”, (vi) “intra_chroma_pred_mode”, (vii) “cbf_luma”, and (viii) “cbf_cb” or “cbf_cr”.

Abstract translation: 图像编码方法包括：从多个上下文中确定图像中的当前块中的上下文; 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; 并且当信号类型是第二类型时，在上限块的控制参数的条件下确定上下文，并且第二类型是（i）“merge_flag”，（ii）“ref_idx_10”或“ref_idx_l1 “，（iii）”inter_pred_flag“，（iv）”mvd_l0“或”mvd_l1“，（v）”no_residual_data_flag“，（vi）”intra_chroma_pred_mode“，（vii）”cbf_luma“和（viii）”cbf_cb“ cbf_cr“。

公开(公告)号：US20150271519A1

公开(公告)日：2015-09-24

申请号：US14729321

申请日：2015-06-03

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/56 ,  H04N19/593 ,  H04N19/52

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.

Abstract translation: 运动图像编码装置包括：帧内预测单元，其通过对时间上相邻的对应块的第一运动矢量执行缩放处理来计算第二运动矢量，当选择性地向列表中添加每个运动矢量的运动矢量时， 或更多个对应的块，每个块是包括在要编码的当前图像中的块，并且与要编码的当前块空间相邻的块或包含在除了当前图像之外的图像中并且在时间上与当前块相邻的块中的块，确定是否 第二运动矢量具有在预定幅度内或不在预定幅度内的幅度，并且当帧内帧间预测单元确定第二运动矢量具有在预定幅度内的幅度时，将第二运动矢量加到列表中 范围。

公开(公告)号：US20150245048A1

公开(公告)日：2015-08-27

申请号：US14707407

申请日：2015-05-08

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/513 ,  H04N19/573 ,  H04N19/31

CPC classification number: H04N19/513 ,  H04N19/31 ,  H04N19/52 ,  H04N19/573

Abstract: A moving picture coding apparatus includes: an inter prediction control unit which determines to code a motion vector using, among candidate predicted motion vectors, a candidate predicted motion vector having the least error with relative to a motion vector derived by motion estimation; a picture type determination unit which generates picture type information; a temporal direction vector calculation unit which derives a candidate predicted motion vector in temporal direct; and a co-located reference direction determination unit which generates, for each picture, a co-located reference direction flag.

Abstract translation: 运动图像编码装置包括：帧间预测控制单元，其使用候选预测运动矢量中的运动矢量对相对于由运动估计导出的运动矢量具有最小误差的候选预测运动矢量进行编码; 图像类型确定单元，其生成图像类型信息; 时间方向矢量计算单元，其在时间上直接导出候选预测运动矢量; 以及共同定位的基准方向确定单元，其针对每个图像生成共同定位的参考方向标志。

公开(公告)号：US20150222915A1

公开(公告)日：2015-08-06

申请号：US14686838

申请日：2015-04-15

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 ,  H04N19/186 ,  H04N19/60 ,  H04N19/122

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.

公开(公告)号：US20150156512A1

公开(公告)日：2015-06-04

申请号：US14609811

申请日：2015-01-30

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/60 ,  H04N19/137 ,  H04N19/136

CPC classification number: H04N19/186 ,  G06T9/007 ,  H04N19/119 ,  H04N19/122 ,  H04N19/136 ,  H04N19/137 ,  H04N19/157 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: An image coding method in which a chroma component and a luma component of an input image including one or more transform blocks are transformed to code the input image. The luma component has the same size as the current transform block. The chroma component is smaller than the current transform block. In the method, when the current transform block has a first minimum size, the chroma component is transformed on a basis of a block resulting from binding a plurality of the chroma blocks to has the same size as the luma block, and when the current transform block has a size other than the first minimum size, a CBF flag indicating whether or not coefficients of the chroma component include a non-zero coefficient is not coded.

Abstract translation: 一种图像编码方法，其中变换包括一个或多个变换块的输入图像的色度分量和亮度分量以对输入图像进行编码。 亮度分量具有与当前变换块相同的大小。 色度分量小于当前的变换块。 在该方法中，当当前变换块具有第一最小尺寸时，基于由多个色块组合而得到的块变换为具有与亮度块相同的大小，并且当当前变换 块的尺寸除了第一最小尺寸之外，CBF标志指示色度分量的系数是否包括非零系数不被编码。

公开(公告)号：US20150085936A1

公开(公告)日：2015-03-26

申请号：US14558956

申请日：2014-12-03

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 ,  H04N19/176

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.

Abstract translation: 图像编码方法包括：从邻近的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; 编码当前块; 并编码当前运动矢量。 在导出中，当当前参考图像和相邻参考图像中的每一个被确定为长期参考图像时，根据第一导出方案导出候选，并且当每个参考图像每个 当前参考图像和相邻参考图像被确定为短期参考图像。

公开(公告)号：US20150071342A1

公开(公告)日：2015-03-12

申请号：US14546111

申请日：2014-11-18

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/103

CPC classification number: H04N19/14 ,  H04N19/103 ,  H04N19/176 ,  H04N19/463

Abstract: An image decoding method includes: restoring a selected prediction mode used in prediction at a time of coding; and decoding a current block included in coded image data to generate a decoded block, according to the prediction based on the selected prediction mode. The restoring includes: determining a first estimated prediction mode; determining a second estimated prediction mode different from the first estimated prediction mode; and restoring the selected prediction mode based on the mode information, the first estimated prediction mode, and the second estimated prediction mode.

Abstract translation: 图像解码方法包括：在编码时恢复预测中使用的选择预测模式; 以及根据所选择的预测模式的预测，解码包含在编码图像数据中的当前块以产生解码块。 恢复包括：确定第一估计预测模式; 确定与第一估计预测模式不同的第二估计预测模式; 以及基于模式信息，第一估计预测模式和第二估计预测模式恢复所选择的预测模式。