公开(公告)号：US09584818B2

公开(公告)日：2017-02-28

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： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/423 ,  H04N19/31 ,  H04N19/44

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：US09497458B2

公开(公告)日：2016-11-15

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 ,  H04N19/50 ,  H04N19/70 ,  H04N19/46 ,  H04N19/13 ,  H04N19/61 ,  H04N19/573

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：US09485518B2

公开(公告)日：2016-11-01

申请号：US13479636

申请日：2012-05-24

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： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/52 ,  H04N19/56 ,  H04N19/105 ,  H04N19/503 ,  H04N19/107

CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/107 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503 ,  H04N19/56

摘要： A moving picture coding apparatus includes: a motion vector predictor candidate calculation unit which calculates one or more motion vector predictor candidates and the number of available predictor candidates; an inter prediction control unit which selects an optimum motion vector predictor candidate; and a variable length coding unit which sets the motion vector predictor candidate list size to the number of available predictor candidates, and variable-length codes a motion vector predictor index used for coding a motion vector, by assigning a bit string according to the motion vector predictor candidate list size to the index.

摘要翻译： 运动图像编码装置包括：运动矢量预测器候选计算单元，其计算一个或多个运动矢量预测器候选和可用预测器候选的数量; 选择最佳运动矢量预测器候选的帧间预测控制单元; 以及可变长度编码单元，其通过根据运动矢量分配位串来将运动矢量预测器候选列表大小设置为可用预测器候选的数量，以及可变长度编码用于对运动矢量进行编码的运动矢量预测器索引 预测值候选人列表大小指数。

公开(公告)号：US09300961B2

公开(公告)日：2016-03-29

申请号：US13814564

申请日：2011-11-22

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： H04N7/26 ,  H04N7/28 ,  H04N19/51 ,  H04N19/105 ,  H04N19/52 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/52

摘要： A motion vector calculation method which attains a higher compression rate, includes: a selection step of selecting one of at least one reference motion vector of a reference block; and a calculation step of calculating a motion vector of a current block to be processed, using the one reference motion vector selected in the selection step, and in the selection step, when the reference block has two reference motion vectors, one of the two reference motion vectors is selected based on whether the reference block is located before or after the current block in display time order, and when the reference block has only one reference motion vector, the one reference motion vector is selected.

摘要翻译： 获得更高压缩率的运动矢量计算方法包括：选择步骤，选择参考块的至少一个参考运动矢量中的一个; 以及计算步骤，使用在所述选择步骤中选择的所述一个参考运动矢量来计算要处理的当前块的运动矢量，并且在所述选择步骤中，当所述参考块具有两个参考运动矢量时，所述两个参考中的一个 基于参考块是否以显示时间顺序位于当前块之前或之后选择运动矢量，并且当参考块仅具有一个参考运动矢量时，选择一个参考运动矢量。

公开(公告)号：US09264727B2

公开(公告)日：2016-02-16

申请号：US13535406

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： H04N7/32 ,  H04N7/26 ,  H04N19/157 ,  H04N19/176 ,  H04N19/70 ,  H04N19/196 ,  H04N19/13

CPC分类号： H04N19/91 ,  H04N19/103 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/593 ,  H04N19/70

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 “intra_chroma_pred_mode”.

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而第二类型是“intra_chroma_pred_mode”时，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：US09106919B2

公开(公告)日：2015-08-11

申请号：US13530306

申请日：2012-06-22

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： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  G06K9/36 ,  G06K9/46 ,  H04N19/21 ,  H04N19/176 ,  H04N19/196 ,  H04N19/13 ,  H04N19/61 ,  H04N19/463 ,  H04N19/157

CPC分类号： H04N19/176 ,  H04N19/124 ,  H04N19/13 ,  H04N19/157 ,  H04N19/159 ,  H04N19/196 ,  H04N19/21 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61

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 one of “ref_idx_l0” and “ref_idx_l1”.

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：US08982953B2

公开(公告)日：2015-03-17

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： H04N7/12 ,  H04N19/56 ,  H04N19/105 ,  H04N19/577 ,  H04N19/51 ,  H04N19/70 ,  H04N19/107 ,  H04N19/503 ,  H04N19/109

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：US08848805B2

公开(公告)日：2014-09-30

申请号：US13816370

申请日：2011-09-21

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： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/51 ,  H04N19/105

CPC分类号： H04N19/115 ,  H04N19/103 ,  H04N19/146 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52

摘要： 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.

公开(公告)号：US08780981B2

公开(公告)日：2014-07-15

申请号：US13817316

申请日：2012-06-26

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： H04N7/12

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US20130322543A1

公开(公告)日：2013-12-05

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

CPC分类号： 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.

摘要翻译： 运动图像编码方法包括：确定第一块是否具有两个参考运动矢量，用于参考与显示顺序相反的正向和反向方向的相同方向，第一块包括在不同于 当前图片并且位于第一图片中，与当前图片中的当前块相同; 以及当通过对所述两个参考运动矢量进行缩放来计算当确定所述第一块具有两个参考运动矢量时，作为当前块的运动矢量的候选的第一和第二运动矢量预测器候选。