公开(公告)号：US20130136373A1

公开(公告)日：2013-05-30

申请号：US13813759

申请日：2012-03-01

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： G06T9/00

CPC分类号： H04N19/51 ,  G06T9/004 ,  H04N19/105 ,  H04N19/117 ,  H04N19/137 ,  H04N19/139 ,  H04N19/167 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/52

摘要： An image decoding method for decoding an image including slices while reducing both a decrease in image quality and a decrease in coding efficiency is provided. The image decoding method includes: decoding a current motion vector which is a motion vector of a current block to be decoded and specifies a reference block included in a reference picture, and a difference image block indicating a difference between the current block and a prediction image block; generating the prediction image block by allocating, to an outside pixel that is a pixel included in the reference block and located outside an associated slice that is a slice corresponding to a current slice to be decoded which includes the current block, a value of an inside pixel that is a pixel located inside the associated slice; and adding up the difference image block and the prediction image block to reconstruct the current block.

摘要翻译： 提供一种图像解码方法，用于对包括切片的图像进行解码，同时减少图像质量的降低和编码效率的降低。 图像解码方法包括：对作为要解码的当前块的运动矢量的当前运动矢量进行解码，并指定参考图像中包含的参考块，以及指示当前块与预测图像之间的差的差分图像块 块; 通过将包括在参考块中并且位于与包括当前块的要解码的当前切片相对应的切片的关联切片外的位置的外部像素分配给内部的值，生成预测图像块 像素，其是位于相关联的切片内的像素; 并且将差分图像块和预测图像块相加以重构当前块。

公开(公告)号：US20130136170A1

公开(公告)日：2013-05-30

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

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：US08451890B2

公开(公告)日：2013-05-28

申请号：US12792899

申请日：2010-06-03

申请人： Chong Soon Lim ,  Takahiro Nishi ,  Youji Shibahara

发明人： Chong Soon Lim ,  Takahiro Nishi ,  Youji Shibahara

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

CPC分类号： H04N19/597 ,  H04N13/161 ,  H04N13/178 ,  H04N19/112 ,  H04N19/124 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/70

摘要： A method of decoding includes decoding a coded stream obtained by coding first and second groups for each access unit including a picture of the first group and a corresponding picture of the second group, wherein the first and second groups are captured at different view points. The method includes determining whether the picture of the first group is synchronized with the picture of the second group, within the access unit, and decoding the picture of the first group using a generated predictive picture of the first group. The method also includes decoding the picture of the second group, using one of (i) a predictive picture generated from the second group and (ii) the predictive picture generated from the first group.

摘要翻译： 一种解码方法包括对包括第一组的图像和第二组的相应图像的每个存取单元对第一组和第二组进行编码而获得的编码流进行解码，其中第一组和第二组在不同的视点被捕获。 所述方法包括：确定所述第一组的图像是否与所述第二组的图像在所述存取单元内同步，以及使用所生成的第一组的预测图像来解码所述第一组的图像。 该方法还包括使用（i）从第二组生成的预测图像和（ii）从第一组产生的预测图像中的一个解码第二组的图像。

公开(公告)号：US20130034165A1

公开(公告)日：2013-02-07

申请号：US13639524

申请日：2011-04-12

申请人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara

发明人： Hisao Sasai ,  Takahiro Nishi ,  Youji Shibahara

IPC分类号： H04N7/32

CPC分类号： H04N19/117 ,  H04N19/122 ,  H04N19/176 ,  H04N19/18 ,  H04N19/513 ,  H04N19/86

摘要： An image coding method for coding an input image per block to generate a coded image signal includes: predicting for each prediction unit which is an area obtained by partitioning a target block to generate a prediction image of the target block; comparing a transform unit which is an area obtained by partitioning the target block and is a processing unit for frequency transform with the prediction unit, to detect part of a boundary of the prediction unit, the boundary being located within the transform unit; performing boundary filtering on the detected part of the boundary in the generated prediction image; calculating a difference between a filtered prediction image and the input image to generate a difference image of the target block; and performing frequency transform on the difference image for each transform unit.

摘要翻译： 一种用于编码每个块的输入图像以生成编码图像信号的图像编码方法包括：对作为通过划分目标块而获得的区域的每个预测单元预测生成目标块的预测图像; 比较作为通过划分目标块而获得的区域的变换单元，并且是用于与预测单元进行频率变换的处理单元，以检测位于变换单元内的边界的预测单元的边界的一部分; 对生成的预测图像中的检测出的边界部分进行边界滤波; 计算滤波后的预测图像和输入图像之间的差以产生目标块的差分图像; 并对每个变换单元对差分图像进行频率变换。

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：US20120251015A1

公开(公告)日：2012-10-04

申请号：US13503782

申请日：2010-10-29

申请人： Chong Soon Lim ,  Min Li ,  Hai Wei Sun ,  Youji Shibahara ,  Takahiro Nishi

发明人： Chong Soon Lim ,  Min Li ,  Hai Wei Sun ,  Youji Shibahara ,  Takahiro Nishi

IPC分类号： G06K9/36

CPC分类号： H04N19/126 ,  H04N19/172 ,  H04N19/196 ,  H04N19/30 ,  H04N19/46 ,  H04N19/61

摘要： A decoding method includes: obtaining a plurality of quantization parameter sets from a header of a coded stream (S400); parsing an identifier from a header of a coded picture included in the coded stream (S402); selecting at least one quantization parameter set from among the plurality of quantization parameter sets, based on the parsed identifier (S404); determining whether a flag parsed from the header of the coded picture has a predetermined value (S408); generating a new quantization matrix from another quantization matrix when the flag has the predetermined value (S410); decoding the coded picture by inversely quantizing the coded picture using the generated new quantization matrix (S412); and decoding the coded picture by inversely quantizing the coded picture using a quantization matrix included in the selected quantization parameter set when the flag does not have the predetermined value (S414).

摘要翻译： 解码方法包括：从编码流的头部获取多个量化参数集（S400）; 从编码流中包含的编码图像的标题中解析标识符（S402）; 基于所解析的标识符，从所述多个量化参数集中选择至少一个量化参数集（S404）; 确定从编码图像的标题解析的标志是否具有预定值（S408）; 当标志具有预定值时，从另一个量化矩阵生成新的量化矩阵（S410）; 通过使用所生成的新量化矩阵对编码图像进行逆量化来解码编码图像（S412）; 以及当所述标志不具有所述预定值时，使用包括在所选择的量化参数集中的量化矩阵对所述编码图像进行逆量化，对所述编码图像进行解码（S414）。

公开(公告)号：US20120163457A1

公开(公告)日：2012-06-28

申请号：US13337416

申请日：2011-12-27

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

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

IPC分类号： H04N7/32

CPC分类号： H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/46 ,  H04N19/521 ,  H04N19/593

摘要： A moving picture decoding method according to the present invention includes: performing intra prediction on a target block to calculate values of predicted samples of the target block; and calculating reconstructed samples of the target block by adding difference data and the values of the predicted samples of the target block, wherein in the performing of intra prediction, validity of each of reference samples that are located one of immediately above and immediately to the left of the target block is determined, and when the reference samples include both a valid reference sample and an invalid reference sample, the intra prediction is performed using the valid reference sample, and an intra-predicted reference sample is determined as a valid reference sample, and an inter-predicted reference sample is determined as an invalid reference sample.

摘要翻译： 根据本发明的运动图像解码方法包括：对目标块执行帧内预测以计算目标块的预测样本的值; 以及通过添加差分数据和所述目标块的预测样本的值来计算所述目标块的重建样本，其中在执行帧内预测时，每个参考样本的位于上方之一并且立即在左侧的有效性 确定目标块的参考样本，并且当参考样本包括有效参考样本和无效参考样本时，使用有效参考样本执行帧内预测，​​并且将预测内参考样本确定为有效参考样本， 并且将预测间参考样本确定为无效参考样本。

公开(公告)号：US20120128066A1

公开(公告)日：2012-05-24

申请号：US13388368

申请日：2010-08-06

申请人： Youji Shibahara ,  Takahiro Nishi ,  Hisao Sasai ,  Kyoto Tanikawa ,  Matthias Narroschke ,  Virginie Drugeon ,  Steffen Wittman

发明人： Youji Shibahara ,  Takahiro Nishi ,  Hisao Sasai ,  Kyoto Tanikawa ,  Matthias Narroschke ,  Virginie Drugeon ,  Steffen Wittman

IPC分类号： H04N7/30

CPC分类号： H04N19/42 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/18 ,  H04N19/60 ,  H04N19/91

摘要： A coding method comprises: transforming an input signal; quantizing a transformed output signal; and entropy coding quantized coefficients, wherein the transforming includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient; and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal which is a part of the first transformed output signal, and outputting the transformed output signal including the generated second transformed output signal and a second partial signal which is the remaining part of the first transformed output signal other than the first partial signal, and wherein, in the generating and outputting, at least one of (i) the first partial signal that is a target signal range for the second transform and (ii) the second transform coefficient is adaptively determined temporally or spatially.

摘要翻译： 编码方法包括：变换输入信号; 量化变换的输出信号; 熵编码量化系数，其中所述变换包括：通过使用第一变换系数对所述输入信号执行第一变换来产生第一变换输出信号; 以及通过使用第二变换系数对作为所述第一变换输出信号的一部分的第一部分信号进行第二变换，并且输出包括所生成的第二变换输出信号的变换输出信号和产生第二变换输出信号，生成第二变换输出信号 第二部分信号，其是除了第一部分信号之外的第一变换输出信号的剩余部分，并且其中，在生成和输出中，以下中的至少一个：（i）作为第二部分信号的目标信号范围 变换和（ii）第二变换系数在时间或空间上自适应地确定。

公开(公告)号：US20110249755A1

公开(公告)日：2011-10-13

申请号：US13139749

申请日：2009-12-16

申请人： Youji Shibahara ,  Takahiro Nishi ,  Hisao Sasai ,  Steffen Wittmann ,  Virginie Drugeon ,  Matthias Narroschke

发明人： Youji Shibahara ,  Takahiro Nishi ,  Hisao Sasai ,  Steffen Wittmann ,  Virginie Drugeon ,  Matthias Narroschke

IPC分类号： H04N7/30

CPC分类号： H04N19/61 ,  H04N19/129

摘要： The coding method includes: transforming pixel values of an image into a two-dimensional matrix including N coefficients in a frequency domain; quantizing the N coefficients to generate N quantized coefficients; generating a one-dimensional sequence based on the two-dimensional matrix and tree structure information that defines a binary tree; and coding the one-dimensional sequence and at least some of the N quantized coefficients. The generating includes: determining, based on the two-dimensional matrix, a reference destination information item indicating positions of the N quantized coefficients in the two-dimensional matrix to be referenced to by the N leaf nodes, respectively (S31); assigning one of a first value and a second value to each of the nodes of the binary tree, based on the two-dimensional matrix and the reference destination information item (S32); and arranging, in preorder, the values assigned to the respective nodes to generate the one-dimensional sequence (S33).

摘要翻译： 编码方法包括：将图像的像素值变换为包括频域中的N个系数的二维矩阵; 量化N个系数以产生N个量化系数; 基于定义二叉树的二维矩阵和树结构信息生成一维序列; 以及对所述一维序列和所述N个量化系数中的至少一些进行编码。 该生成包括：分别基于二维矩阵确定指示由N个叶节点参考的二维矩阵中的N个量化系数的位置的参考目的地信息项（S31）; 基于所述二维矩阵和所述参考目的地信息项（S32），向所述二叉树的每个节点分配第一值和第二值中的一个值（S32）。 以及预先排列分配给各节点的值以生成一维序列（S33）。