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：US09049462B2

公开(公告)日：2015-06-02

申请号：US13530397

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： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  G06K9/36 ,  G06K9/46 ,  H04N19/91 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/13 ,  H04N19/61 ,  H04N19/96

CPC分类号： 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

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 “inter_pred_flag”.

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，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：US08953689B2

公开(公告)日：2015-02-10

申请号：US13482411

申请日：2012-05-29

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 ,  H04N19/105 ,  H04N19/51 ,  H04N19/56 ,  H04N19/107 ,  H04N19/503

CPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/107 ,  H04N19/503 ,  H04N19/52 ,  H04N19/56

摘要： An image coding method includes: determining a maximum number of merging candidates; deriving first merging candidates based on blocks spatially or temporally neighboring a current block; determining whether or not a total number of the first merging candidates is smaller than the maximum number; deriving, by making a combination out of the derived first merging candidates, a second merging candidate for bi-directional prediction when it is determined that the total number of the first merging candidates is smaller than the maximum number; selecting a merging candidate to be used for the coding of the current block from the first merging candidates and the second merging candidate; and coding, using the determined maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

摘要翻译： 图像编码方法包括：确定最大合并候选数; 基于与当前块空间或时间相邻的块来导出第一合并候选; 确定第一合并候选的总数是否小于最大数; 当确定所述第一合并候选的总数小于所述最大数目时，通过从所述导出的第一合并候选中进行组合而导出用于双向预测的第二合并候选; 从第一合并候选和第二合并候选中选择要用于当前块的编码的合并候选; 以及使用所确定的最大数目编码用于识别所选择的合并候选的索引，以及将编码索引附加到比特流。

公开(公告)号：US20130142255A1

公开(公告)日：2013-06-06

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： H04N7/26

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.

公开(公告)号：US20130003836A1

公开(公告)日：2013-01-03

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

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intra_chroma_pred_mode。

公开(公告)号：US20120328010A1

公开(公告)日：2012-12-27

申请号：US13530218

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： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/157 ,  H04N19/13 ,  H04N19/176 ,  H04N19/197 ,  H04N19/463

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.

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：US09462282B2

公开(公告)日：2016-10-04

申请号：US13544061

申请日：2012-07-09

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 ,  H04N19/157 ,  H04N19/196 ,  H04N19/176 ,  H04N19/13 ,  H04N19/91

CPC分类号： H04N19/21 ,  H04N19/105 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/197 ,  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, wherein in the determining: the context is determined under a condition that control parameters of a left block and an upper block are used, when the signal type is a first type; and the context is determined under a third condition that the control parameter of the upper block is not used and a hierarchical depth of a data unit to which the control parameter of the current block belongs is used, when the signal type is a third type, and the third type is one or more of (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “intra_chroma_pred_mode”, (vi) “cbf_luma”, and (vii) “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在待处理的当前块中使用的上下文，其中在确定中：在使用左块和上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时; 并且在第三条件下确定上下文块的控制参数并且使用当前块的控制参数所属的数据单元的分层深度的第三条件，当信号类型是第三类型时， 并且第三类型是（i）“merge_flag”，（ii）“ref_idx_10”或“ref_idx_l1”，（iii）“inter_pred_flag”，（iv）“mvd_10”或“mvd_l1”，（v）“intra_chroma_pred_mode “，（vi）”cbf_luma“和（vii）”cbf_cb“或”cbf_cr“。

公开(公告)号：US08942493B2

公开(公告)日：2015-01-27

申请号：US13504250

申请日：2010-11-01

申请人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa

IPC分类号： G06K9/00 ,  H03M7/40 ,  H04N19/91 ,  H04N19/13 ,  H04N19/159

CPC分类号： H04N19/91 ,  H03M7/4006 ,  H03M7/4012 ,  H04N19/13 ,  H04N19/159 ,  H04N19/50

摘要： An image coding method for performing compression-coding on image data includes: binarizing a signal to be coded of the image data, to generate a binary signal; determining a low-order context which is a context associated with a type of the signal to be coded, and a high-order context that is common to the low-order context and a context associated with another type; calculating coding probability information to be used in arithmetic coding of the binary signal, using (i) high-order probability information corresponding to the determined high-order context and (ii) low-order probability information corresponding to the determined low-order context; performing the arithmetic coding on the binary signal using the coding probability information; and updating the high-order probability information and the low-order probability information based on the binary signal.

摘要翻译： 用于对图像数据执行压缩编码的图像编码方法包括：对要编码的图像数据的信号进行二值化，以生成二进制信号; 确定作为与要编码的信号的类型相关联的上下文的低阶上下文以及与低阶上下文共同的高阶上下文和与另一种类型相关联的上下文; 使用（i）与所确定的高阶上下文相对应的高阶概率信息和（ii）与所确定的低阶上下文相对应的低阶概率信息来计算要用于二进制信号的算术编码的编码概率信息; 使用编码概率信息对二进制信号执行算术编码; 以及基于二进制信号更新高阶概率信息和低阶概率信息。

公开(公告)号：US08811762B2

公开(公告)日：2014-08-19

申请号：US13533205

申请日：2012-06-26

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 ,  G06K9/46

CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/119 ,  H04N19/12 ,  H04N19/122 ,  H04N19/13 ,  H04N19/134 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/583 ,  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 one of “mvd_l0” and “mvd_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“mvd_l0”和“mvd_l1”之一的条件。

公开(公告)号：US08805099B2

公开(公告)日：2014-08-12

申请号：US13529246

申请日：2012-06-21

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

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

IPC分类号： G06K9/36 ,  H04N7/26 ,  H04N7/50

CPC分类号： H04N19/91 ,  H04N19/103 ,  H04N19/13 ,  H04N19/136 ,  H04N19/17 ,  H04N19/61

摘要： 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%.

摘要翻译： 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。