公开(公告)号：US20130235933A1

公开(公告)日：2013-09-12

申请号：US13988582

申请日：2011-11-24

申请人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio

IPC分类号： H04N7/32

CPC分类号： H04N19/50 ,  H04N19/13 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/70

摘要： An image coding method includes: obtaining first information and second information from a current signal to be coded, the first information identifying at least one reference picture list used in inter prediction of an image out of a plurality of reference picture lists, the second information identifying at least one reference picture used in the inter prediction of the image out of reference pictures included in the at least one reference picture list identified by the first information; mixing the first information and the second information to generate a mixed signal; selecting a variable-length coding table according to a maximum variation range of the mixed signal; and variable-length coding the mixed signal using the selected variable-length coding table.

摘要翻译： 一种图像编码方法包括：从当前要编码的信号中获取第一信息和第二信息，所述第一信息标识用于多个参考图像列表中的图像的帧间预测中使用的至少一个参考图像列表，所述第二信息识别 在包括在由第一信息识别的至少一个参考图像列表中的参考图像中的图像的帧间预测中使用的至少一个参考图像; 混合第一信息和第二信息以产生混合信号; 根据混合信号的最大变化范围选择可变长度编码表; 并使用所选择的可变长度编码表对混合信号进行可变长度编码。

公开(公告)号：US20130136375A1

公开(公告)日：2013-05-30

申请号：US13816838

申请日：2012-06-28

申请人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

IPC分类号： G06T9/00

CPC分类号： H04N19/593 ,  G06T9/004 ,  H04N19/13 ,  H04N19/136 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44 ,  H04N19/91

摘要： An image coding method includes coding first binary data indicating a first intra prediction mode and second binary data indicating a second intra prediction mode, wherein in the coding, a first context adaptive portion which is part of the first binary data and a second context adaptive portion which is part of the second binary data are coded by context adaptive binary arithmetic coding, a first bypass portion which is different part of the first binary data and a second bypass portion which is different part of the second binary data are coded by bypass coding, and coded data is generated which includes the first context adaptive portion, the second context adaptive portion, the first bypass portion, and the second bypass portion, the first bypass portion and the second bypass portion being included subsequent to the first context adaptive portion and the second context adaptive portion.

摘要翻译： 图像编码方法包括编码表示第一帧内预测模式的第一二进制数据和表示第二帧内预测模式的第二二进制数据，其中在编码中，作为第一二进制数据的一部分的第一上下文自适应部分和第二上下文自适应部分 作为第二二进制数据的一部分的上下文自适应二进制算术编码进行编码，作为第一二进制数据的不同部分的第一旁路部分和作为第二二进制数据的不同部分的第二旁路部分通过旁路编码进行编码， 并且生成包括第一上下文自适应部分，第二上下文自适应部分，第一旁路部分和第二旁路部分的编码数据，第一旁路部分和第二旁路部分包括在第一上下文自适应部分之后，并且 第二上下文自适应部分。

公开(公告)号：US20130136178A1

公开(公告)日：2013-05-30

申请号：US13814255

申请日：2011-09-28

申请人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Virginie Drugeon

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Virginie Drugeon

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/14 ,  H04N19/103 ,  H04N19/176 ,  H04N19/463

摘要： 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.

公开(公告)号：US20130004092A1

公开(公告)日：2013-01-03

申请号：US13535527

申请日：2012-06-28

申请人： Hisao SASAI ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

发明人： Hisao SASAI ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

IPC分类号： G06K9/36

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

摘要： 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 (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”.

摘要翻译： 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或cbf_cr。

公开(公告)号：US20130003848A1

公开(公告)日：2013-01-03

申请号：US13534165

申请日：2012-06-27

申请人： Toshiyasu SUGIO ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

发明人： Toshiyasu SUGIO ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N7/28

CPC分类号： H04N13/161 ,  H04N19/52 ,  H04N19/573 ,  H04N19/577 ,  H04N19/597

摘要： An image coding method includes: (i) determining, for each of one or more associated blocks, whether to add a motion vector of the associated block to a list, and (ii) adding the motion vector of the associated block to the list when determining that the motion vector of the associated block is to be added to the list; selecting a motion vector from the list as a motion vector predictor; and (i) coding a current block using a motion vector of the current block, and (ii) coding a difference between the motion vector of the current block and the motion vector predictor, and in the determining, it is determined that the motion vector of the associated block is not to be added to the list when an associated picture and an associated reference picture match temporally or when a current picture and a current reference picture match temporally.

摘要翻译： 图像编码方法包括：（i）针对一个或多个关联块中的每一个确定是否将相关块的运动矢量添加到列表，以及（ii）将相关块的运动矢量添加到列表中， 确定相关块的运动矢量将被添加到列表中; 从列表中选择运动矢量作为运动矢量预测器; 以及（i）使用当前块的运动矢量对当前块进行编码，以及（ii）对当前块的运动矢量与运动矢量预测器之间的差进行编码，并且在确定中，确定运动矢量 当相关联的图片和相关联的参考图片在时间上匹配时或当当前图片和当前参考图片在时间上匹配时，相关联的块的不被添加到列表中。

公开(公告)号：US20120263235A1

公开(公告)日：2012-10-18

申请号：US13441994

申请日：2012-04-09

申请人： Toshiyasu SUGIO ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

发明人： Toshiyasu SUGIO ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

IPC分类号： H04N7/32

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/107 ,  H04N19/109 ,  H04N19/503 ,  H04N19/52 ,  H04N19/56 ,  H04N19/573 ,  H04N19/577 ,  H04N19/70

摘要： By the moving picture coding method and the moving picture decoding method, it is possible to improve coding efficiency. The moving picture coding apparatus includes a merge block candidate calculation unit that (i) specifies merge block candidates at merge mode, by using colpic information such as motion vectors and reference picture index values of neighbor blocks of a current block to be coded and a motion vector and the like of a collocated block of the current block which are stored in a colPic memory, and (ii) generates a combined merge block by using the merge block candidates.

摘要翻译： 通过运动图像编码方法和运动图像解码方法，可以提高编码效率。 运动图像编码装置包括合并块候选计算单元，其中（i）通过使用诸如运动矢量和当前要编码的块的相邻块的参考图像索引值的标准信息和运动 存储在colPic存储器中的当前块的并置块的向量等，以及（ii）通过使用合并块候选来生成组合合并块。

公开(公告)号：US20120183059A1

公开(公告)日：2012-07-19

申请号：US13349174

申请日：2012-01-12

申请人： Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Toshiyasu Sugio

发明人： Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Toshiyasu Sugio

IPC分类号： H04N7/36

CPC分类号： H04N19/50 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/31 ,  H04N19/423 ,  H04N19/44

摘要： With an image coding method which allows reduction of processing loads, when pictures included in a video signal are classified into layers so as to belong to their respective layers, a picture that belongs to the second layer that is located in a range restricted according to the first layer to which a current picture to be coded that is one of the pictures belongs, is referred to as a reference picture for the current picture, and the current picture is coded based on the reference picture.

摘要翻译： 利用允许减少处理负荷的图像编码方法，当包括在视频信号中的图像被分类为属于它们各自的层的图像时，属于第二层的图像，该图像位于根据 作为图像之一的要编码的当前图像所属的第一层被称为当前图像的参考图像，并且基于参考图像对当前图像进行编码。

公开(公告)号：US10404998B2

公开(公告)日：2019-09-03

申请号：US13985315

申请日：2012-02-17

申请人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

IPC分类号： H04N7/36 ,  H04N19/56 ,  H04N19/51 ,  H04N19/513

摘要： A moving picture coding method includes: determining whether or not a first block has two reference motion vectors for referencing a same direction that is one of a forward direction and a backward direction in display order, the first block being included in a first picture different from the current picture and being co-located, in the first picture, with the current block within the current picture; and calculating, when it is determined in the determining that the first block has the two reference motion vectors, first and second motion vector predictor candidates that are candidates for a motion vector for the current block, by scaling the two reference motion vectors.

公开(公告)号：US09143805B2

公开(公告)日：2015-09-22

申请号：US13546086

申请日：2012-07-11

申请人： Toru Matsunobu ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Kyoko Tanikawa ,  Toshiyasu Sugio

发明人： Toru Matsunobu ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Kyoko Tanikawa ,  Toshiyasu Sugio

IPC分类号： H04N19/86 ,  H04N19/176 ,  H04N19/70 ,  H04N19/126 ,  H04N19/14 ,  H04N19/154 ,  H04N19/593 ,  H04N19/186 ,  H04N19/36

CPC分类号： H04N19/86 ,  H04N19/126 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/186 ,  H04N19/36 ,  H04N19/593 ,  H04N19/70

摘要： An image coding method includes: generating a temporarily coded chrominance signal from the coded residual signal and the intra prediction chrominance signal; calculating a direct-current component of the input chrominance signal; calculating a direct-current component of the temporarily coded chrominance signal; calculating an offset value from the direct-current component of the input chrominance signal and the direct-current component of the temporarily coded chrominance signal; coding quantized coefficients, an intra prediction mode, and the offset value; and adding the offset value to the temporarily coded chrominance signal to generate a coded chrominance signal.

摘要翻译： 图像编码方法包括：从编码残差信号和帧内预测色度信号产生临时编码的色度信号; 计算输入色度信号的直流分量; 计算临时编码的色度信号的直流分量; 从输入色度信号的直流分量和临时编码的色度信号的直流分量计算偏移值; 编码量化系数，帧内预测模式和偏移值; 并将偏移值加到临时编码的色度信号中，以产生编码的色度信号。

公开(公告)号：US09083981B2

公开(公告)日：2015-07-14

申请号：US13347721

申请日：2012-01-11

申请人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

IPC分类号： H04N7/34 ,  H04N19/52

CPC分类号： H04N19/513 ,  H04N19/31 ,  H04N19/52 ,  H04N19/573

摘要： 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.

摘要翻译： 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。