公开(公告)号：US08036485B2

公开(公告)日：2011-10-11

申请号：US12058474

申请日：2008-03-28

申请人： Kevin M. Ferguson ,  Jiuhuai Lu

发明人： Kevin M. Ferguson ,  Jiuhuai Lu

IPC分类号： G06K9/40

CPC分类号： H04N19/86 ,  H04N19/14 ,  H04N19/176 ,  H04N19/61

摘要： Picture quality measurement systems and methods are provided for measuring DC blockiness within video blocks. Block boundaries are located within a test video frame. The relative AC differences within each block are measured using a reference video frame, a statistically estimated reference or a default value of the white video level divided by two. An objective DC blockiness map, a subjective DC blockiness map or both may be generated.

摘要翻译： 提供了图像质量测量系统和方法来测量视频块内的直流阻塞。 块边界位于测试视频帧内。 使用参考视频帧，统计估计参考或白色视频级别的默认值除以2来测量每个块内的相对AC差异。 可以生成目标直流阻塞图，主观直流阻塞图或两者。

公开(公告)号：US20120039390A1

公开(公告)日：2012-02-16

申请号：US13281163

申请日：2011-10-25

申请人： Jiuhuai Lu ,  Yoshiichiro Kashiwagi ,  Masayuki Kozuka ,  Shinya Kadono

发明人： Jiuhuai Lu ,  Yoshiichiro Kashiwagi ,  Masayuki Kozuka ,  Shinya Kadono

IPC分类号： H04N7/26

CPC分类号： H04N19/105 ,  H04N19/119 ,  H04N19/126 ,  H04N19/136 ,  H04N19/137 ,  H04N19/139 ,  H04N19/146 ,  H04N19/162 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/186 ,  H04N19/194 ,  H04N19/44 ,  H04N19/46 ,  H04N19/48 ,  H04N19/60 ,  H04N19/70

摘要： The picture coding method of the present invention is a picture coding method for coding a picture on a block-by-block basis, comprising: a selection step of selecting one of at least two sizes as a size of a block on which orthogonal transformation should be performed; a transformation step of performing orthogonal transformation on a block having the selected size; a coding step of coding data of said block obtained in the transformation step; and a generation step of generating a coded stream that includes the coded data of the block and size information concerning the size selected in the selection step, wherein the size information indicates whether or not the size is a fixed block size within a predetermined section in the coded stream, and the predetermined section is one of a sequence, a group of pictures, a picture, a slice, and a macroblock.

摘要翻译： 本发明的图像编码方法是用于逐块地对图像进行编码的图像编码方法，包括：选择步骤，将至少两个尺寸中的一个选择为正交变换的块的大小 被执行 对具有所选择的大小的块执行正交变换的变换步骤; 对在所述变换步骤中获得的所述块的数据进行编码的编码步骤; 以及生成步骤，生成包括所述块的编码数据和与所述选择步骤中选择的尺寸有关的尺寸信息的编码流，其中，所述尺寸信息指示所述尺寸是否是所述尺寸在所述选择步骤中的预定部分内的固定块尺寸 编码流，并且预定部分是序列，一组图片，图片，切片和宏块之一。

公开(公告)号：US06751360B1

公开(公告)日：2004-06-15

申请号：US09712009

申请日：2000-11-14

申请人： Jiuhuai Lu

发明人： Jiuhuai Lu

IPC分类号： G06K936

CPC分类号： H04N17/004 ,  H04N17/00

摘要： A fast temporal alignment estimation method for temporally aligning a distorted video with a corresponding source video in order to perform accurate video quality measurements transforms each video into a corresponding signature curve by calculating a data point for each frame. The data points are calculated as a cross-correlation between a present frame and a subsequent frame in the video. The signature curves are then matched using a normalized cross-correlation algorithm to compute the temporal misalignment between the videos so that the video signals may be temporally aligned. Fast spatial alignment may then be performed and accurate video quality measurements made.

摘要翻译： 为了执行精确的视频质量测量，用于将失真的视频与对应的源视频暂时对准的快速时间对准估计方法通过计算每个帧的数据点将每个视频转换成对应的签名曲线。 数据点被计算为视频中当前帧和后续帧之间的互相关。 然后使用归一化互相关算法来匹配特征曲线以计算视频之间的时间偏差，使得视频信号可以在时间上对准。 然后可以执行快速的空间对准，并进行准确的视频质量测量。

公开(公告)号：US08401074B2

公开(公告)日：2013-03-19

申请号：US12607777

申请日：2009-10-28

申请人： Tao Chen ,  Jiuhuai Lu ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

发明人： Tao Chen ,  Jiuhuai Lu ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N19/42 ,  H04N19/126 ,  H04N19/46 ,  H04N19/61

摘要： The picture decoding method according to the present invention is a decoding method for decoding coded pictures by inverse quantization and inverse orthogonal transformation, in which a quantization matrix which defines a scaling ratio of a quantization step for each component is multiplied by a multiplier, which is a coefficient for frequency transformation or a quantization step, and also, a result of the multiplication is multiplied by a quantized value, as a process of inverse quantization.

公开(公告)号：US20110150083A1

公开(公告)日：2011-06-23

申请号：US13039104

申请日：2011-03-02

申请人： Jiuhuai Lu ,  Tao Chen ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

发明人： Jiuhuai Lu ,  Tao Chen ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

IPC分类号： H04N7/26

CPC分类号： H04N19/188 ,  H04N19/126 ,  H04N19/159 ,  H04N19/169 ,  H04N19/186 ,  H04N19/61 ,  H04N19/70

摘要： A moving picture coding apparatus 1 includes: a quantization matrix holding unit (112) that holds a quantization matrix (WM) which has already been transmitted in a parameter set and a matrix ID for identifying the quantization matrix (WM), which are associated with each other; and a variable length coding unit (111) that obtains the matrix ID corresponding to the quantization matrix (WM) used for quantization from the quantization matrix holding unit (112) and places the matrix ID in a coded stream Str.

公开(公告)号：US20080089410A1

公开(公告)日：2008-04-17

申请号：US10569872

申请日：2005-01-26

申请人： Jiuhuai Lu ,  Tao Chen ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

发明人： Jiuhuai Lu ,  Tao Chen ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

IPC分类号： H04N7/12

CPC分类号： H04N19/188 ,  H04N19/126 ,  H04N19/159 ,  H04N19/169 ,  H04N19/186 ,  H04N19/61 ,  H04N19/70

摘要： A moving picture coding apparatus 1 includes: a quantization matrix holding unit (112) that holds a quantization matrix (WM) which has already been transmitted in a parameter set and a matrix ID for identifying the quantization matrix (WM), which are associated with each other; and a variable length coding unit (111) that obtains the matrix ID corresponding to the quantization matrix (WM) used for quantization from the quantization matrix holding unit (112) and places the matrix ID in a coded stream Str.

摘要翻译： 运动图像编码装置1包括：量化矩阵保持单元，其保存已经在参数集中发送的量化矩阵（WM）和用于识别量化矩阵（WM）的矩阵ID，其与 彼此; 以及可变长度编码单元（111），其从量化矩阵保持单元（112）获得与用于量化的量化矩阵（WM）相对应的矩阵ID，并将矩阵ID放置在编码流Str中。

公开(公告)号：US08194734B2

公开(公告)日：2012-06-05

申请号：US13039104

申请日：2011-03-02

申请人： Jiuhuai Lu ,  Tao Chen ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

发明人： Jiuhuai Lu ,  Tao Chen ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

IPC分类号： H04N7/26 ,  H04N11/04 ,  H04N5/44

CPC分类号： H04N19/188 ,  H04N19/126 ,  H04N19/159 ,  H04N19/169 ,  H04N19/186 ,  H04N19/61 ,  H04N19/70

摘要： A moving picture decoding apparatus includes: a quantization matrix holding unit (202) that holds a quantization matrix (WM) which has already been transmitted in a parameter set and a matrix ID for identifying the quantization matrix (WM), which are associated with each other; and a variable length decoding unit (201) that obtains the matrix ID corresponding to the quantization matrix (WM) used for quantization from the quantization matrix holding unit (202) and places the matrix ID in a coded stream Str.

摘要翻译： 运动图像解码装置包括：量化矩阵保持单元，其保存已经在参数集中发送的量化矩阵（WM）和用于识别量化矩阵（WM）的矩阵ID，其与每个相关联 其他; 以及可变长度解码单元，其从量化矩阵保持单元（202）获得与用于量化的量化矩阵（WM）相对应的矩阵ID，并将矩阵ID放置在编码流Str中。

公开(公告)号：US07995650B2

公开(公告)日：2011-08-09

申请号：US13004786

申请日：2011-01-11

申请人： Shinya Kadono ,  Yoshiichiro Kashiwagi ,  Jiuhuai Lu ,  Chong Soon Lim ,  Tao Chen

发明人： Shinya Kadono ,  Yoshiichiro Kashiwagi ,  Jiuhuai Lu ,  Chong Soon Lim ,  Tao Chen

IPC分类号： H04N11/02 ,  G06K9/36

CPC分类号： H04N19/136 ,  H04N19/126 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/61 ,  H04N19/91

摘要： The picture coding method according to the present invention is a picture coding method for coding a picture on a block-by-block basis through orthogonal transformation and quantization, and coding a quantization matrix that is used to derive quantization steps for frequencies of orthogonal transformation coefficients, the method comprising: calculating a difference value between each of frequency components included in the quantization matrix and a predetermined value corresponding to said each of the frequency components; and coding the difference value into a variable length code, wherein a code length of the variable length code is shorter as the difference value is smaller, or equal to a code length of a neighboring difference value of said difference value.

摘要翻译： 根据本发明的图像编码方法是一种图像编码方法，用于通过正交变换和量化在逐块的基础上编码图像，并且对用于导出正交变换系数的频率的量化步长的量化矩阵进行编码 该方法包括：计算包括在量化矩阵中的每个频率分量与对应于所述每个频率分量的预定值之间的差值; 以及将所述差值编码为可变长度码，其中所述可变长度码的码长度随着所述差值较小而变短，或等于所述差值的相邻差值的码长。

公开(公告)号：US20110110423A1

公开(公告)日：2011-05-12

申请号：US13004786

申请日：2011-01-11

申请人： Shinya Kadono ,  Yoshiichiro Kashiwagi ,  Jiuhuai Lu ,  Chong Soon Lim ,  Tao Chen

发明人： Shinya Kadono ,  Yoshiichiro Kashiwagi ,  Jiuhuai Lu ,  Chong Soon Lim ,  Tao Chen

IPC分类号： H04N7/26

CPC分类号： H04N19/136 ,  H04N19/126 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/61 ,  H04N19/91

摘要： The picture coding method according to the present invention is a picture coding method for coding a picture on a block-by-block basis through orthogonal transformation and quantization, and coding a quantization matrix that is used to derive quantization steps for frequencies of orthogonal transformation coefficients, the method comprising: calculating a difference value between each of frequency components included in the quantization matrix and a predetermined value corresponding to said each of the frequency components; and coding the difference value into a variable length code, wherein a code length of the variable length code is shorter as the difference value is smaller, or equal to a code length of a neighboring difference value of said difference value.

摘要翻译： 根据本发明的图像编码方法是一种图像编码方法，用于通过正交变换和量化在逐块的基础上编码图像，并且对用于导出正交变换系数的频率的量化步长的量化矩阵进行编码 该方法包括：计算包括在量化矩阵中的每个频率分量与对应于所述每个频率分量的预定值之间的差值; 以及将所述差值编码为可变长度码，其中所述可变长度码的码长度随着所述差值较小而变短，或等于所述差值的相邻差值的码长。

公开(公告)号：US20100054330A1

公开(公告)日：2010-03-04

申请号：US12607777

申请日：2009-10-28

申请人： Tao Chen ,  Jiuhuai Lu ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

发明人： Tao Chen ,  Jiuhuai Lu ,  Yoshiichiro Kashiwagi ,  Shinya Kadono ,  Chong Soon Lim

IPC分类号： H04N7/26

CPC分类号： H04N19/42 ,  H04N19/126 ,  H04N19/46 ,  H04N19/61

摘要： The picture decoding method according to the present invention is a decoding method for decoding coded pictures by inverse quantization and inverse orthogonal transformation, in which a quantization matrix which defines a scaling ratio of a quantization step for each component is multiplied by a multiplier, which is a coefficient for frequency transformation or a quantization step, and also, a result of the multiplication is multiplied by a quantized value, as a process of inverse quantization.

摘要翻译： 根据本发明的图像解码方法是用于通过逆量化和逆正交变换对编码图像进行解码的解码方法，其中定义每个分量的量化步长的缩放比的量化矩阵乘以乘数，乘法器是 用于频率变换的系数或量化步长，并且乘法的结果乘以量化值作为逆量化的处理。