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：US08620097B2

公开(公告)日：2013-12-31

申请号：US13568444

申请日：2012-08-07

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

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

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： 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

摘要： 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.

摘要翻译： 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。

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。

公开(公告)号：US20130128983A1

公开(公告)日：2013-05-23

申请号：US13814060

申请日：2011-12-27

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

CPC分类号： H04N19/52

摘要： An image coding method for deriving a predicted motion vector suitable for increasing the coding efficiency of a motion vector. An image coding method of coding a current block with prediction using a first motion vector and a second motion vector, the first motion vector indicating a position in a first reference picture included in a first reference picture list. The second motion vector indicating a position in a second reference picture included in a second reference picture list, the method including: adding the first motion vector to a candidate predicted motion vector list to be used for coding the second motion vector, as a candidate predicted motion vector; selecting a predicted motion vector to be used for coding the second motion vector, from the candidate predicted motion vector list; and coding the second motion vector using the selected predicted motion vector.

摘要翻译： 一种用于导出适于增加运动矢量的编码效率的预测运动矢量的图像编码方法。 一种使用第一运动矢量和第二运动矢量对具有预测的当前块进行编码的图像编码方法，所述第一运动矢量指示包括在第一参考图片列表中的第一参考图片中的位置。 所述第二运动矢量指示包括在第二参考图像列表中的第二参考图像中的位置，所述方法包括：将所述第一运动矢量与用于编码所述第二运动矢量的候选预测运动矢量列表相加，作为候选预测 运动矢量 从候选预测运动矢量列表中选择要用于编码第二运动矢量的预测运动矢量; 以及使用所选择的预测运动矢量对所述第二运动矢量进行编码。

公开(公告)号：US20130058408A1

公开(公告)日：2013-03-07

申请号：US13605043

申请日：2012-09-06

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

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

IPC分类号： H04N7/32

CPC分类号： H04N19/50 ,  H04N19/105 ,  H04N19/15 ,  H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/30 ,  H04N19/58 ,  H04N19/70

摘要： An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; selecting one of the buffer descriptions for each processing unit that is a picture or a slice, and writing buffer description selecting information for specifying the selected buffer description, into a first header of the processing unit which is included in the coded bitstream; and coding the processing unit using the selected buffer description, and the buffer description defining information includes long-term information for identifying, among a plurality of reference pictures indicated in the buffer descriptions, a reference picture to be assigned as a long-term reference picture.

公开(公告)号：US20130022112A1

公开(公告)日：2013-01-24

申请号：US13551686

申请日：2012-07-18

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

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

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/184 ,  H04N19/61

摘要： A filtering method is for performing deblocking filtering on the boundary between an IPCM block and a non-IPCM block adjacent to each other in an image and including: determining a first quantization parameter for the non-IPCM block; determining a second quantization parameter for the IPCM block, using the first quantization parameter; determining a filter strength for the boundary, using the first quantization parameter and the second quantization parameter; and performing the deblocking filtering on the boundary using the determined filter strength.

摘要翻译： 一种滤波方法，用于对图像中彼此相邻的IPCM块和非IPCM块之间的边界进行解块滤波，包括：确定非IPCM块的第一量化参数; 使用所述第一量化参数确定所述IPCM块的第二量化参数; 使用所述第一量化参数和所述第二量化参数来确定所述边界的滤波器强度; 并使用所确定的滤波器强度在边界上执行去块滤波。

公开(公告)号：US20130003850A1

公开(公告)日：2013-01-03

申请号：US13536309

申请日：2012-06-28

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： H04N7/32 ,  H04N7/36 ,  H04N7/34

CPC分类号： H04N19/105 ,  H04N19/147 ,  H04N19/176 ,  H04N19/52 ,  H04N19/573 ,  H04N19/70 ,  H04N19/96

摘要： An image decoding method for decoding, on a block-by-block basis, image data included in a coded bitstream includes: obtaining a fixed number of merging candidates each of which is a candidate set of a prediction direction, a motion vector, and a reference picture index which are to be referenced in decoding of a current block (S303); and obtaining, from the coded bitstream, an index for identifying a merging candidate for the current block (S304), wherein the fixed number of merging candidates include: one or more first candidates each derived based on a prediction direction, a motion vector, and a reference picture index which have been used for decoding a neighboring block spatially or temporally neighboring the current block; and one or more second candidates having a predetermined fixed. The fixed number is greater than or equal to two.