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：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：US09319675B2

公开(公告)日：2016-04-19

申请号：US13816341

申请日：2012-02-17

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

CPC分类号： H04N19/13 ,  H03M7/4018 ,  H04N19/157 ,  H04N19/167 ,  H04N19/197 ,  H04N19/44

摘要： 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.

摘要翻译： 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

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

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

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

CPC分类号： H04N19/50 ,  H04N19/46 ,  H04N19/513 ,  H04N19/523 ,  H04N19/61 ,  H04N19/70

摘要： 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.

摘要翻译： 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：US20140023140A1

公开(公告)日：2014-01-23

申请号：US13983581

申请日：2012-02-07

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

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

IPC分类号： H04N7/26

摘要： 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.

摘要翻译： 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：US20130293676A1

公开(公告)日：2013-11-07

申请号：US13978597

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： H04N13/00

CPC分类号： H04N13/161 ,  H04N19/46 ,  H04N19/52 ,  H04N19/597

摘要： An image coding method is provided which enables prediction of a motion vector with high accuracy and coding of an image with high coding efficiency. The image coding method includes: calculating a disparity motion vector predictor for predicting a motion vector of a current block to be coded, from a motion vector of a disparity block; selecting a motion vector predictor for use in the prediction of the motion vector of the current block from among one or more motion vector predictor candidates including the disparity motion vector predictor; and coding (i) identification information corresponding to the motion vector predictor selected from among the one or more motion vector predictor candidates and (ii) a motion vector difference that is a difference between the motion vector of the current block and the motion vector predictor.

摘要翻译： 提供了能够以高精度预测运动矢量并以高编码效率对图像进行编码的图像编码方法。 图像编码方法包括：从视差块的运动矢量计算视差运动矢量预测器，用于预测要编码的当前块的运动矢量; 从包括视差运动矢量预测器的一个或多个运动矢量预测器候选中选择用于预测当前块的运动矢量的运动矢量预测器; 以及编码（i）与从一个或多个运动矢量预测器候选中选择的运动矢量预测器相对应的识别信息，以及（ii）作为当前块的运动矢量与运动矢量预测器之间的差的运动矢量差。

公开(公告)号：US20130272427A1

公开(公告)日：2013-10-17

申请号：US13976637

申请日：2012-01-18

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： H04N7/26

CPC分类号： H04N19/00254 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/167 ,  H04N19/18

摘要： An image coding method for coding image data on a block-by-block basis includes: segmenting a block including coefficients of frequency components, into groups corresponding to frequency ranges based on types of the coefficients, and determining a context corresponding to each of the groups; performing, for each of the coefficients, binary arithmetic coding on the coefficient according to a probability information item corresponding to the context, the context being corresponding to the group having the coefficient; and updating, for each of probability information items, the probability information item corresponding to the context, based on the coefficient included in the group corresponding to the context, wherein in the segmenting, the block is segmented into the groups with various numbers of coefficients.

摘要翻译： 一种用于逐块地对图像数据进行编码的图像编码方法包括：基于系数的类型，将包括频率分量的系数的块分割成与频率范围对应的组，并且确定与每个组对应的上下文 ; 对于每个系数，对根据与上下文相对应的概率信息项对系数进行二进制算术编码，上下文对应于具有系数的组; 以及基于与所述上下文相对应的组中包括的系数，针对每个概率信息项更新与所述上下文相对应的概率信息项，其中在所述分段中，所述块被分段成具有不同数目系数的组。

公开(公告)号：US20130266069A1

公开(公告)日：2013-10-10

申请号：US13993230

申请日：2011-12-14

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

摘要： An image coding method for coding a current block, by assigning two or more reference picture indexes to one or more reference pictures that are different from a current picture which includes the current block, and the image coding method comprises the following when the two or more reference picture indexes are used to code the current block: determining whether or not reference pictures identified by two or more reference picture indexes are identical to each other; and switching, based on a result of the determining, between whether or not a prediction direction for coding the current block in a predetermined coding mode is fixed.

摘要翻译： 一种用于对当前块进行编码的图像编码方法，通过将两个或更多个参考图像索引分配给与包括当前块的当前图像不同的一个或多个参考图像，并且图像编码方法包括以下步骤： 参考图像索引用于对当前块进行编码：确定由两个或更多个参考图像索引识别的参考图片是否相同; 以及基于确定的结果，切换在预定编码模式中对当前块进行编码的预测方向是否固定。

公开(公告)号：US20130142253A1

公开(公告)日：2013-06-06

申请号：US13816341

申请日：2012-02-17

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： H04N7/26

CPC分类号： H04N19/13 ,  H03M7/4018 ,  H04N19/157 ,  H04N19/167 ,  H04N19/197 ,  H04N19/44

摘要： 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.

摘要翻译： 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。