公开(公告)号：US08526498B2

公开(公告)日：2013-09-03

申请号：US12027404

申请日：2008-02-07

申请人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Youji Shibahara ,  Takahiro Nishi ,  Toshiyasu Sugio ,  Kazuya Takagi

发明人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Youji Shibahara ,  Takahiro Nishi ,  Toshiyasu Sugio ,  Kazuya Takagi

IPC分类号： H04B1/66

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/159 ,  H04N19/16 ,  H04N19/177 ,  H04N19/19 ,  H04N19/51 ,  H04N19/567

摘要： A video coding apparatus is provided to reduce pulsing artifacts. The video coding apparatus includes a correlation calculation unit calculating a correlation value indicating a correlation degree of correlation between: a first block; and a second block or a third block. The first block includes pixels included in a first original picture in an original picture sequence of original pictures, the second block includes pixels included in a second original picture which precedes the first original picture, and the third block is obtained by coding and reconstructing the second block. The video coding apparatus also includes a correlation judgment unit judging whether the correlation value exceeds a first threshold, and judging that the correlation is high when the correlation value exceeds the first threshold, and includes a blending unit blending the first block and the third block when the correlation judgment unit judges that the correlation is high.

摘要翻译： 提供一种视频编码装置以减少脉冲伪像。 视频编码装置包括：相关计算部，计算表示第一块的相关度的相关值的相关值; 和第二块或第三块。 第一块包括原始图像的原始图像序列中包含在第一原始图像中的像素，第二块包括在第一原始图像之前的第二原始图像中包括的像素，并且通过对第二原始​​图像进行编码和重建来获得第三块 块。 视频编码装置还包括相关判断单元，判断相关值是否超过第一阈值，并且当相关值超过第一阈值时判断相关性高，并且包括混合单元，当混合单元混合第一块和第三块时 相关判断单元判断为相关性高。

公开(公告)号：US20080192824A1

公开(公告)日：2008-08-14

申请号：US12026729

申请日：2008-02-06

申请人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kazuya Takagi

发明人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kazuya Takagi

IPC分类号： H04N7/26

CPC分类号： H04N19/19 ,  H04N19/124 ,  H04N19/147 ,  H04N19/17 ,  H04N19/177

摘要： To provide a method and an apparatus for adaptively improving the image quality of current images to be coded by reducing effects due to pulsing artifacts. The video coding method of the present invention is intended for coding a video on a per predetermined block basis using one or more predetermined quantization control variables, and includes: calculating a correlation degree indicating the correlation between an original block in a current original picture to be coded and a prediction block in a previous uncompressed picture; changing a first predetermined quantization control variable to a second predetermined quantization control variable so as to reduce a quantization step size in the case where the correlation degree is greater than a predetermined threshold; and determining the quantization step size based on the second quantization control variable, and coding the original block on the determined quantization step size basis using a predetermined image coding tool.

摘要翻译： 提供一种用于通过减少由于脉冲伪影引起的影响来自适应地改善要编码的当前图像的图像质量的方法和装置。 本发明的视频编码方法是用于使用一个或多个预定量化控制变量对每个预定块的视频进行编码，并且包括：计算表示当前原始图像中的原始块之间的相关性的相关度为 编码和预先未压缩图像中的预测块; 将第一预定量化控制变量改变为第二预定量化控制变量，以便在相关度大于预定阈值的情况下减小量化步长; 以及基于所述第二量化控制变量来确定所述量化步长，并且使用预定的图像编码工具以所确定的量化步长对所述原始块进行编码。

公开(公告)号：US08279923B2

公开(公告)日：2012-10-02

申请号：US12026729

申请日：2008-02-06

申请人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kazuya Takagi

发明人： Chong Soon Lim ,  Viktor Wahadaniah ,  Teo Han Boon ,  Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kazuya Takagi

IPC分类号： H04N7/12

CPC分类号： H04N19/19 ,  H04N19/124 ,  H04N19/147 ,  H04N19/17 ,  H04N19/177

摘要： A method and an apparatus are provided for adaptively improving an image quality of current images to be coded by reducing effects due to pulsing artifacts. The video coding method is intended for coding a video on a per predetermined block basis using one or more predetermined quantization control variables. The method includes calculating a correlation degree indicating a correlation between an original block in a current original picture to be coded and a prediction block in a previous uncompressed picture, and includes changing a first predetermined quantization control variable to a second predetermined quantization control variable, so as to reduce a quantization step size when the correlation degree is greater than a predetermined threshold. The method also includes determining the quantization step size based on the second quantization control variable, and coding the original block based on the determined quantization step size using a predetermined image coding tool.

摘要翻译： 提供了一种方法和装置，用于通过减少由于脉冲伪像引起的影响来自适应地改善要编码的当前图像的图像质量。 视频编码方法旨在使用一个或多个预定量化控制变量在每个预定块的基础上编码视频。 该方法包括：计算指示当前待编码的原始图像中的原始块与先前未压缩图像中的预测块之间的相关性的相关度，并且包括将第一预定量化控制变量改变为第二预定量化控制变量，因此 以便当相关度大于预定阈值时减小量化步长。 该方法还包括基于第二量化控制变量来确定量化步长，并且使用预定的图像编码工具，基于所确定的量化步长对原始块进行编码。

公开(公告)号：US20080291998A1

公开(公告)日：2008-11-27

申请号：US12027404

申请日：2008-02-07

申请人： Chong Soon LIM ,  Viktor Wahadaniah ,  Teo Han Boon ,  Youji Shibahara ,  Takahiro Nishi ,  Toshiyasu Sugio ,  Kazuya Takagi

发明人： Chong Soon LIM ,  Viktor Wahadaniah ,  Teo Han Boon ,  Youji Shibahara ,  Takahiro Nishi ,  Toshiyasu Sugio ,  Kazuya Takagi

IPC分类号： H04N7/32 ,  H04N7/26

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/159 ,  H04N19/16 ,  H04N19/177 ,  H04N19/19 ,  H04N19/51 ,  H04N19/567

摘要： The video coding apparatus of the present invention for reducing pulsing artifacts includes: a correlation calculation unit which calculates a correlation value indicating a correlation degree of correlation between: a first block; and a second block or a third block. The first block including pixels included in a first original picture in an original picture sequence of original pictures, the second block including pixels included in a second original picture which precedes the first original picture, and the third block being obtained by coding and reconstructing the second block. The video coding apparatus includes a correlation judgment unit which judges whether the correlation value exceeds a first threshold, and judge that the correlation is high when the correlation value exceeds the first threshold; and a blending unit which blends the first block and the third block when the correlation judgment unit judges that the correlation is high.

摘要翻译： 本发明的用于减少脉冲伪影的视频编码装置包括：相关计算单元，计算表示第一块的相关度的相关值的相关值; 和第二块或第三块。 第一块包括原始图像的原始图像序列中包括在第一原始图像中的像素，第二块包括包括在第一原始图像之前的像素，并且第三块是通过对第二原始​​图像进行编码和重建而获得的 块。 视频编码装置包括：相关判断单元，其判断相关值是否超过第一阈值，并且当相关值超过第一阈值时判断相关性高; 以及混合单元，其在相关判断单元判断相关性高时，混合第一块和第三块。

公开(公告)号：US20080080618A1

公开(公告)日：2008-04-03

申请号：US11905061

申请日：2007-09-27

申请人： Kazuya Takagi ,  Takahiro Nishi

发明人： Kazuya Takagi ,  Takahiro Nishi

IPC分类号： H04B1/66

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/16 ,  H04N19/61

摘要： A video decoding apparatus which decodes a bitstream on an area-by-area basis. The area is included in a picture of an interlace format. The bitstream is coded by switching coding types between field coding and frame coding. The apparatus includes: a filter processing unit which performs post filtering for removing noise; a coding type identifying unit which identifies the coding type of a current area and further identifies the coding type of either the area contained in a picture temporally continuous to the current picture and colocated with the current area or the area spatially adjacent to the current area; and a noise removing strength determination unit which determines strength for removing noise according to whether the identified coding type is the frame coding or the field coding. The processing unit performs post filtering on the current area according to the noise removing strength.

摘要翻译： 一种视频解码装置，其逐个区域地对比特流进行解码。 该区域包含在交错格式的图片中。 通过在场编码和帧编码之间切换编码类型对比特流进行编码。 该装置包括：滤波处理单元，其执行用于去除噪声的后置滤波; 编码类型识别单元，其识别当前区域的编码类型，并且还识别与当前图像暂时连续的图像中包含的区域的编码类型，并与当前区域或与当前区域空间相邻的区域共同定位; 以及噪声消除强度确定单元，其根据所识别的编码类型是帧编码还是场编码来确定去除噪声的强度。 处理单元根据噪声消除强度对当前区域进行后置滤波。

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。