公开(公告)号：US08446958B2

公开(公告)日：2013-05-21

申请号：US13130286

申请日：2010-09-21

申请人： Yoshiichiro Kashiwagi ,  Tao Chen ,  Takahiro Nishi

发明人： Yoshiichiro Kashiwagi ,  Tao Chen ,  Takahiro Nishi

IPC分类号： H04B1/66 ,  G06K9/36

CPC分类号： H04N19/36 ,  H04N19/136 ,  H04N19/184 ,  H04N19/187 ,  H04N19/34 ,  H04N19/56 ,  H04N19/597

摘要： An image coding apparatus using an encoder which places restrictions on the bit depth to codes a current image to be coded having a bit depth greater than a predetermined bit depth, and includes: a down-converter (102) which down-converts the current image into a base view image having a bit depth equal to or less than the predetermined bit depth; an MVC (multiview video coding) encoder (101) which codes the base view image and decodes the coded base view image to generate a reconstructed image; and a subtracter (103) which calculates differences between characteristics of pixel values of the pre-down-conversion current image and characteristics of the corresponding pixel values of the reconstructed image, and generates, using the calculated differences, a non-base view image having a bit depth equal to or less than the predetermined bit depth, wherein the MVC encoder (101) further codes the non-base view image.

摘要翻译： 一种使用编码器的图像编码装置，其对位深度进行限制，以对具有大于预定位深度的位深度进行编码的当前图像编码，并且包括：下变频器（102），其对当前图像进行下变频 成为具有等于或小于预定位深度的位深度的基本视图图像; 用于对基本视图图像进行编码并解码编码的基本视图图像以生成重建图像的MVC（多视角视频编码）编码器（101） 以及减法器（103），其计算所述下变频当前图像的像素值的特性与所述重构图像的对应像素值的特性之间的差异，并且使用所计算出的差异生成具有 等于或小于预定位深度的位深度，其中MVC编码器（101）还对非基本视图图像进行编码。

公开(公告)号：US20110222605A1

公开(公告)日：2011-09-15

申请号：US13130286

申请日：2010-09-21

申请人： Yoshiichiro Kashiwagi ,  Tao Chen ,  Takahiro Nishi

发明人： Yoshiichiro Kashiwagi ,  Tao Chen ,  Takahiro Nishi

IPC分类号： H04N7/32 ,  H04N7/26

CPC分类号： H04N19/36 ,  H04N19/136 ,  H04N19/184 ,  H04N19/187 ,  H04N19/34 ,  H04N19/56 ,  H04N19/597

摘要： An image coding apparatus using an encoder which places restrictions on the bit depth to codes a current image to be coded having a bit depth greater than a predetermined bit depth, and includes: a down-converter (102) which down-converts the current image into a base view image having a bit depth equal to or less than the predetermined bit depth; an MVC (multiview video coding) encoder (101) which codes the base view image and decodes the coded base view image to generate a reconstructed image; and a subtracter (103) which calculates differences between characteristics of pixel values of the pre-down-conversion current image and characteristics of the corresponding pixel values of the reconstructed image, and generates, using the calculated differences, a non-base view image having a bit depth equal to or less than the predetermined bit depth, wherein the MVC encoder (101) further codes the non-base view image.

摘要翻译： 一种使用编码器的图像编码装置，其对位深度进行限制，以对具有大于预定位深度的位深度进行编码的当前图像编码，并且包括：下变频器（102），其对当前图像进行下变频 成为具有等于或小于预定位深度的位深度的基本视图图像; 用于对基本视图图像进行编码并解码编码的基本视图图像以生成重建图像的MVC（多视角视频编码）编码器（101） 以及减法器（103），其计算所述下变频当前图像的像素值的特性与所述重构图像的对应像素值的特性之间的差异，并且使用所计算出的差异生成具有 等于或小于预定位深度的位深度，其中MVC编码器（101）还对非基本视图图像进行编码。

公开(公告)号：US10404998B2

公开(公告)日：2019-09-03

申请号：US13985315

申请日：2012-02-17

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 ,  H04N19/56 ,  H04N19/51 ,  H04N19/513

摘要： A moving picture coding method includes: determining whether or not a first block has two reference motion vectors for referencing a same direction that is one of a forward direction and a backward direction in display order, the first block being included in a first picture different from the current picture and being co-located, in the first picture, with the current block within the current picture; and calculating, when it is determined in the determining that the first block has the two reference motion vectors, first and second motion vector predictor candidates that are candidates for a motion vector for the current block, by scaling the two reference motion vectors.

公开(公告)号：US10027957B2

公开(公告)日：2018-07-17

申请号：US13978633

申请日：2012-01-12

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

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

IPC分类号： H04N7/36 ,  H04N19/583 ,  H04N19/46 ,  H04N19/573 ,  H04N19/58

摘要： A method of encoding video using a plurality of reference pictures is provided. The method includes: writing one of a parameter or a flag into one or more reference pictures of the plurality of reference pictures, creating a first list of reference pictures comprising the plurality of reference pictures sorted based on the parameter or flag, and encoding a current picture of the video using at least the first list of reference pictures. A method of decoding video using a plurality of reference pictures is also provided. The method includes parsing one of a parameter or flag from one or more reference pictures of the plurality of reference pictures, creating a first list of reference pictures comprising the plurality of reference pictures sorted based on the parameter or flag, and decoding a current picture of the video using at least the first list of reference pictures. In addition, there are provided corresponding apparatuses for encoding and decoding video.

公开(公告)号：US09749630B2

公开(公告)日：2017-08-29

申请号：US13818702

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： H04N7/50 ,  H04N19/124 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/42 ,  H04N19/147 ,  H04N19/12 ,  H04N19/44

摘要： An image decoding method which can improve both image quality and coding efficiency is an image decoding method for decoding a coded stream which includes a plurality of processing units and a header for the processing units, the coded stream being generated by coding a moving picture, the processing units including at least one processing unit layered to be split into a plurality of smaller processing units, the image decoding method including specifying a hierarchical layer having a processing unit in which a parameter necessary for decoding is stored, by parsing hierarchy depth information stored in the header, and decoding the processing unit using the parameter stored in the processing unit located at the specified hierarchical layer.

公开(公告)号：US09369718B2

公开(公告)日：2016-06-14

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： H04N19/126 ,  H04N19/172 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/30

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; parsing an identifier from a header of a coded picture included in the coded stream; selecting at least one quantization parameter set from among the plurality of quantization parameter sets, based on the parsed identifier; determining whether a flag parsed from the header of the coded picture has a predetermined value; generating a new quantization matrix from another quantization matrix when the flag has the predetermined value; decoding the coded picture by inversely quantizing the coded picture using the generated new quantization matrix; 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.

摘要翻译： 解码方法包括：从编码流的报头获取多个量化参数集; 从包括在编码流中的编码图像的头部解析标识符; 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; 确定从编码图像的标题解析的标志是否具有预定值; 当所述标志具有所述预定值时，从另一个量化矩阵生成新的量化矩阵; 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; 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。

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：US09083981B2

公开(公告)日：2015-07-14

申请号：US13347721

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： H04N7/34 ,  H04N19/52

CPC分类号： H04N19/513 ,  H04N19/31 ,  H04N19/52 ,  H04N19/573

摘要： A moving picture coding apparatus includes: an inter prediction control unit which determines to code a motion vector using, among candidate predicted motion vectors, a candidate predicted motion vector having the least error with relative to a motion vector derived by motion estimation; a picture type determination unit which generates picture type information; a temporal direction vector calculation unit which derives a candidate predicted motion vector in temporal direct; and a co-located reference direction determination unit which generates, for each picture, a co-located reference direction flag.

摘要翻译： 运动图像编码装置包括：帧间预测控制单元，其使用候选预测运动矢量中的运动矢量对相对于由运动估计导出的运动矢量具有最小误差的候选预测运动矢量进行编码; 图像类型确定单元，其生成图像类型信息; 时间方向矢量计算单元，其在时间上直接导出候选预测运动矢量; 以及共同定位的基准方向确定单元，其针对每个图像生成共同定位的参考方向标志。

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：US09049455B2

公开(公告)日：2015-06-02

申请号：US13336353

申请日：2011-12-23

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： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/577 ,  H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N19/107 ,  H04N19/137 ,  H04N19/567 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70 ,  H04N19/51

CPC分类号： H04N19/107 ,  H04N19/105 ,  H04N19/124 ,  H04N19/137 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/52 ,  H04N19/56 ,  H04N19/567 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/61 ,  H04N19/70

摘要： An image coding method includes: adding, to a candidate list, a first adjacent motion vector as a candidate for a predicted motion vector to be used for coding the current motion vector; selecting the predicted motion vector from the candidate list; and coding the current motion vector, wherein in the adding, the first adjacent motion vector indicating a position in a first reference picture included in a first reference picture list is added to the candidate list for the current motion vector indicating a position in a second reference picture included in a second reference picture list.

摘要翻译： 图像编码方法包括：向候选列表添加第一相邻运动矢量作为用于编码当前运动矢量的预测运动矢量的候选; 从候选列表中选择预测运动矢量; 并且对当前运动矢量进行编码，其中在相加中，指示包括在第一参考图像列表中的第一参考图像中的位置的第一相邻运动矢量被添加到用于指示第二参考中的位置的当前运动矢量的候选列表 图片包括在第二参考图片列表中。