公开(公告)号：US09462282B2

公开(公告)日：2016-10-04

申请号：US13544061

申请日：2012-07-09

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

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

IPC: H04N7/32 ,  H04N19/157 ,  H04N19/196 ,  H04N19/176 ,  H04N19/13 ,  H04N19/91

CPC classification number: H04N19/21 ,  H04N19/105 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/197 ,  H04N19/91

Abstract: 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”.

Abstract translation: 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：US09319675B2

公开(公告)日：2016-04-19

申请号：US13816341

申请日：2012-02-17

Applicant: Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio

Inventor： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio

IPC: H04N7/12 ,  H04N19/10 ,  H03M7/40 ,  H04N19/13 ,  H04N19/157 ,  H04N19/44 ,  H04N19/167

CPC classification number: H04N19/13 ,  H03M7/4018 ,  H04N19/157 ,  H04N19/167 ,  H04N19/197 ,  H04N19/44

Abstract: An arithmetic decoding method is a method in which a context variable specifying a probability of a possible value of each of elements included in a binary string corresponding to a value of a given variable is initialized and arithmetic decoding is performed, using the context variable. The method includes: determining, from among a plurality of initialization methods as a method of initializing the context variable, an initialization method corresponding to the given variable or a group which includes the given variable; and initializing the context variable using the determined initialization method.

Abstract translation: 算术解码方法是使用上下文变量来初始化指定与给定变量的值对应的二进制串中的每个元素的可能值的概率的上下文变量并进行算术解码的方法。 该方法包括：从多个初始化方法中确定初始化上下文变量的方法，对应于给定变量的初始化方法或包括给定变量的组; 并使用所确定的初始化方法来初始化上下文变量。

公开(公告)号：US09288490B2

公开(公告)日：2016-03-15

申请号：US13876519

申请日：2011-09-29

Applicant: Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Chong Soon Lim ,  Viktor Wahadaniah ,  Xuan Jing ,  Sue Mon Thet Naing

Inventor： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Chong Soon Lim ,  Viktor Wahadaniah ,  Xuan Jing ,  Sue Mon Thet Naing

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/50 ,  H04N19/70 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/523

CPC classification number: H04N19/50 ,  H04N19/46 ,  H04N19/513 ,  H04N19/523 ,  H04N19/61 ,  H04N19/70

Abstract: An image coding method decodes a coded stream which is generated by inter prediction coding a moving picture and includes processing units and a header of such units, the processing units including at least one processing unit divided in a hierarchy, the hierarchy including: a highest hierarchical layer in which a coding unit is a largest processing unit; and a lower hierarchical layer in which a prediction unit exists. The method comprises: identifying, by parsing hierarchy depth information stored in the header and indicating a hierarchical layer higher than a lowest hierarchical layer in which a smallest prediction unit exits, a hierarchical layer which is indicated by the hierarchy depth information or a hierarchical layer higher than the indicated hierarchical layer, the hierarchical layer having a prediction unit that stores an adaptive motion vector resolution switch flag necessary for decoding; and decoding the prediction unit, using the flag.

Abstract translation: 图像编码方法对通过运动图像进行帧间预测编码生成的编码流进行解码，并且包括处理单元和这些单位的标题，所述处理单元包括分层划分的至少一个处理单元，所述层次包括：最高等级 编码单元是最大处理单元的层; 以及其中存在预测单元的较低层级。 该方法包括：通过解析存储在标题中的分层深度信息，并指示高于最小预测单元退出的最低分层的分层，由层次结构深度信息或层次层更高层指示的分级层 所述分级层具有存储解码所需的自适应运动矢量分辨率开关标志的预测单元; 以及使用所述标志对所述预测单元进行解码。

公开(公告)号：US08942493B2

公开(公告)日：2015-01-27

申请号：US13504250

申请日：2010-11-01

Applicant: Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa

Inventor： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa

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

CPC classification number: H04N19/91 ,  H03M7/4006 ,  H03M7/4012 ,  H04N19/13 ,  H04N19/159 ,  H04N19/50

Abstract: 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.

Abstract translation: 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

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

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

IPC: G06K9/36 ,  G06K9/46

CPC classification number: 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

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 “mvd_l0” and “mvd_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“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

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

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

IPC: G06K9/36 ,  H04N7/26 ,  H04N7/50

CPC classification number: H04N19/91 ,  H04N19/103 ,  H04N19/13 ,  H04N19/136 ,  H04N19/17 ,  H04N19/61

Abstract: 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%.

Abstract translation: 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。

公开(公告)号：US08798147B2

公开(公告)日：2014-08-05

申请号：US13556583

申请日：2012-07-24

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

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

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC classification number: H04N19/50 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91

Abstract: A moving picture coding method includes (i) transforming, for each of one or more second processing units included in the first processing unit, a moving picture signal in a spatial domain into a frequency domain coefficient and quantizing the frequency domain coefficient, and (ii) performing arithmetic coding on a luminance CBF flag indicating whether or not a quantized coefficient is included in the second processing unit in which transform and quantization are performed, wherein, in the arithmetic coding, a probability table for use in arithmetic coding is determined according to whether or not the size of the first processing unit is identical to the size of the second processing unit and whether or not the second processing unit has a predetermined maximum size.

Abstract translation: 运动图像编码方法包括：（i）对于包括在第一处理单元中的一个或多个第二处理单元中的每一个，将空间域中的运动图像信号变换为频域系数并量化频域系数，并且（ii 对用于表示量化系数是否包括在其中执行变换和量化的第二处理单元中的亮度CBF标志执行算术编码，其中在算术编码中，根据算术编码确定用于算术编码的概率表 第一处理单元的尺寸是否与第二处理单元的尺寸相同，以及第二处理单元是否具有预定的最大尺寸。

公开(公告)号：US20140169450A1

公开(公告)日：2014-06-19

申请号：US14239662

申请日：2012-08-24

Applicant: Viktor Wahadaniah ,  Chong Soon Lim ,  Sue Mon Thet Naing ,  Hai Wei Sun ,  Takahiro Nishi ,  Hisao Sasai ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

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

IPC: H04N19/105

CPC classification number: H04N19/10 ,  H04N19/105 ,  H04N19/174 ,  H04N19/70

Abstract: A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description.

Abstract translation: 一种编码视频的方法，包括：将多个预定缓冲器描述写入编码视频比特流的序列参数集; 将多个更新参数写入编码视频比特流的片头中，用于选择和修改多个缓冲器描述中的一个缓冲器描述; 以及使用片头和修改的缓冲器描述将片编码到编码视频比特流中。

公开(公告)号：US20140023140A1

公开(公告)日：2014-01-23

申请号：US13983581

申请日：2012-02-07

Applicant: Viktor Wahadaniah ,  Chong Soon Lim ,  Sue Mon Thet Naing ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Toshiyasu Sugio

Inventor： Viktor Wahadaniah ,  Chong Soon Lim ,  Sue Mon Thet Naing ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Toshiyasu Sugio

IPC: H04N7/26

Abstract: A video encoding method using reference pictures includes: writing a parameter indicating a temporal level of a reference picture or a period of a type of a reference picture into the reference picture for each of the reference pictures, creating a first list of reference pictures comprising the reference pictures sorted based on the parameter; and encoding a current picture of the video using at least the first list of reference pictures. A video decoding method using a reference pictures includes: parsing a parameter indicating a temporal level of a reference picture or a period of a type of a reference picture from each of the reference pictures; creating a first list of reference pictures comprising the reference pictures sorted based on the parameter; and decoding a current picture of the video using at least the first list of reference pictures. Corresponding video encoding and decoding apparatuses are provided.

Abstract translation: 使用参考图片的视频编码方法包括：将指示参考图片的时间水平的参数或参考图片的类型的周期写​​入参考图片中的每个参考图片，创建包括 参考图片根据参数排序; 以及使用至少所述第一参考图片列表来编码所述视频的当前照片。 使用参考图片的视频解码方法包括：从每个参考图片解析指示参考图片的时间水平的参数或参考图片的类型的周期; 创建包括基于参数排序的参考图片的参考图片的第一列表; 以及使用至少所述第一参考图片列表来解码所述视频的当前照片。 提供了相应的视频编码和解码装置。

公开(公告)号：US08620097B2

公开(公告)日：2013-12-31

申请号：US13568444

申请日：2012-08-07

Applicant: Daisaku Komiya ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

Inventor： Daisaku Komiya ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu

IPC: G06K9/36 ,  G06K9/46

CPC classification number: H04N19/124 ,  G06T9/00 ,  G06T9/005 ,  G06T9/007 ,  G06T9/008 ,  H04N19/13 ,  H04N19/134 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/436 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/593 ,  H04N19/60 ,  H04N19/70

Abstract: An image coding method includes: dividing a picture into tiles; coding the tiles to generate pieces of coded data each of which corresponds to a different one of the tiles; and generating a bitstream including the pieces of coded data. The coding of the tiles includes: generating a first code string by coding a first tile which is one of the tiles, without referring to coding information used in coding another one of the tiles; and adding a bit string after the first code string to make a bit length of first coded data which is one of the pieces of coded data, a multiple of a predetermined N bits, N being an integer greater than or equal to 2.

Abstract translation: 图像编码方法包括：将图像划分成瓦片; 对瓦片进行编码以生成各自对应于不同瓦片的编码数据; 以及生成包括所述编码数据的比特流。 瓦片的编码包括：通过对作为瓦片之一的第一瓦片进行编码来生成第一代码串，而不参考在编码另一个瓦片中使用的编码信息; 并且在第一代码串之后添加位串以使得作为编码数据之一的第一编码数据的位长度，预定N位的倍数，N是大于或等于2的整数。