公开(公告)号：US08134598B2

公开(公告)日：2012-03-13

申请号：US11712428

申请日：2007-03-01

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

IPC分类号： H04N17/00 ,  H04N17/02 ,  H04N7/173

CPC分类号： H04N17/02

摘要： Picture having a band of 6 MHz is distributed to the set-top box (STB) 14 via the compression encoder 11, the distribution server 12, and the network 13. The low-pass filter 151 in the picture quality monitoring apparatus 15 removes high-frequency components of an inputted digital signal and inputs luminance signal, the band of which is limited to 4 MHz, into the PSNR calculator 153. The Y/C separator 152 separates a luminance signal from NTSC analog composite signal, which are sent out from the set-top box 14. The separated luminance signal has a band of 4 MHz. The PSNR calculator 153 calculates PSNR between the luminance signal from the low-pass filter 151 and the luminance signal from the Y/C separator 152.

摘要翻译： 具有6MHz的频带的图像经由压缩编码器11，分发服务器12和网络13分配到机顶盒（STB）14。图像质量监视装置15中的低通滤波器151去除高 输入数字信号的频率分量，并将其频带限制为4MHz的亮度信号输入到PSNR计算器153中.Y / C分离器152将从NTSC模拟复合信号中分离出的亮度信号从 分离的亮度信号具有4MHz的频带。 PSNR计算器153计算来自低通滤波器151的亮度信号和来自Y / C分离器152的亮度信号之间的PSNR。

公开(公告)号：US07385627B2

公开(公告)日：2008-06-10

申请号：US10901186

申请日：2004-07-29

申请人： Osamu Sugimoto ,  Ryoichi Kawada ,  Atsushi Koike

发明人： Osamu Sugimoto ,  Ryoichi Kawada ,  Atsushi Koike

IPC分类号： H04N17/00 ,  H04N17/02 ,  G06K9/66 ,  G06K9/46

CPC分类号： H04N17/004 ,  H04N19/14 ,  H04N19/154 ,  H04N19/85

摘要： This invention is intended to reduce a line rate of a monitoring line necessary for transmission of a picture feature without complicating a system. A video signal xi (n0, n1) of each block is subjected to spread spectrum by multiplying the video signal xi(n0, n1) by a PN sequences SPN1 (n0, n1) (in a step S1). The resultant video signal is orthogonally transformed by DFT, DCT, WHT, or the like (in a step S2). An amplitude component Ai=|Xi(SE0, SE1)| of an arbitrary component (SE0, SE1) in a coefficient Xi(S0, S1) obtained by the steps S1 and S2 is extracted (in a step S3), and the extracted amplitude component is quantized with a step size M (in a step S4). The picture feature F[i] is given as a residue obtained under a modulus Nm of a quantized typical value obtained by the quantization (in the step S4) (in a step S5).

摘要翻译： 本发明旨在降低传输图像特征所需的监视线的线路速率，而不会使系统复杂化。 每个块的视频信号x 1（n 0，n 1，n 1，...）通过将视频信号x < （n> 0，...，n）（n> 0，...，n） （在步骤S1中）。 所得到的视频信号通过DFT，DCT，WHT等进行正交变换（步骤S 2）。 振幅分量A 1（X E 1，...，E 1）| | 在系数X 1（S 0，S 3）中的任意分量（S E E，S 1，E 2） 提取通过步骤S1和S2获得的（SUB> 1）（在步骤S3中），并且以步长M量化提取的振幅分量（在步骤S 4中）。 给出图像特征F [i]作为通过量化获得的量化典型值（在步骤S 4中）（在步骤S 5中）获得的在模数N N m下获得的残差。

公开(公告)号：US07199819B2

公开(公告)日：2007-04-03

申请号：US10781632

申请日：2004-02-20

申请人： Osamu Sugimoto ,  Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada

发明人： Osamu Sugimoto ,  Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada

IPC分类号： H04N17/00

CPC分类号： H04N17/00

摘要： Feature quantities of a transmitted picture and a received picture are extracted from a first and second block-by-block feature quantity extraction parts which are provided on a transmitting and receiving sides, respectively. The extracted feature quantities are transmitted to a block degradation calculation part which compares the transmitted feature quantities and finds the degree of picture quality degradation for each block. Next, a median filter replaces the degree of picture quality degradation for the each block with a median of the degrees of picture quality degradation among the neighboring blocks of the each block. Then, a degraded block detection part compares the median with a predetermined threshold and detects a degraded block. Finally, a degraded region detection part removes an isolated degraded block and detects a degraded region. According to the invention, local picture quality degradation in a frame caused by transmission failure can be automatically detected with high accuracy.

摘要翻译： 从发送和接收侧分别提供的第一和第二逐块特征量提取部分提取发送图像和接收图像的特征量。 提取的特征量被发送到块劣化计算部分，其比较发送的特征量并且找出每个块的图像质量劣化程度。 接下来，中值滤波器用每个块的相邻块之间的图像质量劣化程度的中值替代每个块的图像质量劣化程度。 然后，劣化块检测部分将中值与预定阈值进行比较，并检测劣化块。 最后，劣化区域检测部分去除孤立的降级块并检测劣化区域。 根据本发明，可以以高精度自动检测由传输失败引起的帧中的局部图像质量劣化。

公开(公告)号：US07773674B2

公开(公告)日：2010-08-10

申请号：US11905281

申请日：2007-09-28

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Atsushi Koike

IPC分类号： H04B1/66

CPC分类号： H04N5/145 ,  G06T7/223 ,  G06T2207/10016 ,  G06T2207/10021 ,  H04N7/014

摘要： A matching section performs motion estimation upon a predetermined processing unit of input video (p) by, e.g., an iterative gradient method. A motion vector (v) obtained by the iterative gradient method is obtained by the expression v=α·Δv+v0 (wherein v0 indicates an initial displacement motion vector and Δv indicates a differential vector). A characteristic amount extraction section extracts a characteristic amount from the distribution of motion vectors obtained by the motion estimation. A parameter determination section determines a conversion parameter α applied to the next processing unit by the characteristic amount. If the characteristic amount is equal to or larger than a predetermined threshold, the conversion parameter α is determined to be larger (e.g., α=1). If the characteristic amount is smaller than the threshold, the conversion parameter α is determined to be smaller (e.g., α=0.1).

摘要翻译： 匹配部分通过例如迭代梯度法在输入视频（p）的预定处理单元上执行运动估计。 通过表达式v =α·＆Dgr; v + v0（其中v0表示初始位移运动矢量，＆Dgr; v表示微分矢量）获得通过迭代梯度法获得的运动矢量（v）。 特征量提取部从通过运动估计获得的运动矢量的分布中提取特征量。 参数确定部分通过特征量确定应用于下一处理单元的转换参数α。 如果特征量等于或大于预定阈值，则转换参数α被确定为较大（例如，α= 1）。 如果特征量小于阈值，则转换参数α被确定为较小（例如，α= 0.1）。

公开(公告)号：US20080031339A1

公开(公告)日：2008-02-07

申请号：US11905281

申请日：2007-09-28

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Atsushi Koike

IPC分类号： H04N7/12

CPC分类号： H04N5/145 ,  G06T7/223 ,  G06T2207/10016 ,  G06T2207/10021 ,  H04N7/014

摘要： A matching section performs motion estimation upon a predetermined processing unit of input video (p) by, e.g., an iterative gradient method. A motion vector (v) obtained by the iterative gradient method is obtained by the expression v=α·Δv+v0 (wherein v0 indicates an initial displacement motion vector and Δv indicates a differential vector). A characteristic amount extraction section extracts a characteristic amount from the distribution of motion vectors obtained by the motion estimation. A parameter determination section determines a conversion parameter α applied to the next processing unit by the characteristic amount. If the characteristic amount is equal to or larger than a predetermined threshold, the conversion parameter α is determined to be larger (e.g., α=1). If the characteristic amount is smaller than the threshold, the conversion parameter α is determined to be smaller (e.g., α=0.1).

摘要翻译： 匹配部分通过例如迭代梯度法在输入视频（p）的预定处理单元上执行运动估计。 通过迭代梯度方法获得的运动矢量（v）通过表达式v = alpha.Deltav + v 0 0获得（其中v 0表示初始位移运动矢量， Deltav表示差分向量）。 特征量提取部从通过运动估计获得的运动矢量的分布中提取特征量。 参数确定部分根据特征量确定应用于下一处理单元的转换参数α。 如果特征量等于或大于预定阈值，则将转换参数α确定为较大（例如，α= 1）。 如果特征量小于阈值，则将转换参数α确定为较小（例如，α= 0.1）。

公开(公告)号：US07305032B2

公开(公告)日：2007-12-04

申请号：US10620350

申请日：2003-07-17

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Atsushi Koike

IPC分类号： H04B1/66

CPC分类号： H04N5/145 ,  G06T7/223 ,  G06T2207/10016 ,  G06T2207/10021 ,  H04N7/014

摘要： A matching section performs motion estimation upon a predetermined processing unit of input video (p) by, e.g., an iterative gradient method. A motion vector (v) obtained by the iterative gradient method is obtained by the expression v=α·Δv+v0 (wherein v0 indicates an initial displacement motion vector and Δv indicates a differential vector). A characteristic amount extraction section extracts a characteristic amount from the distribution of motion vectors obtained by the motion estimation. A parameter determination section determines a conversion parameter α applied to the next processing unit by the characteristic amount. If the characteristic amount is equal to or larger than a predetermined threshold, the conversion parameter α is determined to be larger (e.g., α=1). If the characteristic amount is smaller than the threshold, the conversion parameter α is determined to be smaller (e.g., α=0.1).

摘要翻译： 匹配部分通过例如迭代梯度法在输入视频（p）的预定处理单元上执行运动估计。 通过迭代梯度方法获得的运动矢量（v）通过表达式v = alpha.Deltav + v 0 0获得（其中v 0表示初始位移运动矢量， Deltav表示差分向量）。 特征量提取部从通过运动估计获得的运动矢量的分布中提取特征量。 参数确定部分根据特征量确定应用于下一处理单元的转换参数α。 如果特征量等于或大于预定阈值，则将转换参数α确定为较大（例如，α= 1）。 如果特征量小于阈值，则将转换参数α确定为较小（例如，α= 0.1）。

公开(公告)号：US20050206732A1

公开(公告)日：2005-09-22

申请号：US11059543

申请日：2005-02-17

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

IPC分类号： H04N17/00 ,  H04N7/01

CPC分类号： H04N7/01 ,  H04N17/004

摘要： A picture of 625/50 format is converted to a picture of 525/60 format by a format converter provided halfway of the transmission link (1). By thinning scanning lines from the 625/50 format with a scanning line thinning means (2) on an input side of the transmission link (1) and then thinning fields from the format of 525/60 with a field (frame) thinning means (4) on an output side, the formats are matched with each other. After that, a picture quality characteristic amount is extracted by picture quality characteristic amount extracting portions (3), (5) and transmitted to a central monitoring room (6). A comparing means (7) of the central monitoring room (6) compares received picture quality characteristic amount so as to monitor a transmitted picture quality on a transmission link.

摘要翻译： 通过传输链路（1）中途的格式转换器将625/50格式的图像转换为525/60格式的图像。 通过在传输链路（1）的输入侧上用扫描线稀疏装置（2）从625/50格式中稀疏扫描线，然后用场（帧）稀疏装置（525/60）的格式， 4）在输出侧，格式相互匹配。 之后，通过图像质量特征量提取部（3），（5）提取图像质量特征量，并将其发送到中央监视室（6）。 中央监控室（6）的比较装置（7）比较接收的图像质量特征量，以便监视传输链路上传输的图像质量。

公开(公告)号：US07551198B2

公开(公告)日：2009-06-23

申请号：US11059543

申请日：2005-02-17

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

IPC分类号： H04N17/00

CPC分类号： H04N7/01 ,  H04N17/004

摘要： A picture of 625/50 format is converted to a picture of 525/60 format by a format converter provided halfway of the transmission link (1). By thinning scanning lines from the 625/50 format with a scanning line thinning means (2) on an input side of the transmission link (1) and then thinning fields from the format of 525/60 with a field (frame) thinning means (4) on an output side, the formats are matched with each other. After that, a picture quality characteristic amount is extracted by picture quality characteristic amount extracting portions (3), (5) and transmitted to a central monitoring room (6). A comparing means (7) of the central monitoring room (6) compares received picture quality characteristic amount so as to monitor a transmitted picture quality on a transmission link.

摘要翻译： 通过传输链路（1）中途的格式转换器将625/50格式的图像转换为525/60格式的图像。 通过在传输链路（1）的输入侧上用扫描线稀疏装置（2）从625/50格式中稀疏扫描线，然后用场（帧）稀疏装置（525/60）的格式， 4）在输出侧，格式相互匹配。 之后，通过图像质量特征量提取部（3），（5）提取图像质量特征量，并将其发送到中央监视室（6）。 中央监控室（6）的比较装置（7）比较接收的图像质量特征量，以便监视传输链路上传输的图像质量。

公开(公告)号：US20070206095A1

公开(公告)日：2007-09-06

申请号：US11712428

申请日：2007-03-01

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Atsushi Koike

IPC分类号： H04N17/00

CPC分类号： H04N17/02

摘要： Picture having a band of 6 MHz is distributed to the set-top box (STB) 14 via the compression encoder 11, the distribution server 12, and the network 13. The low-pass filter 151 in the picture quality monitoring apparatus 15 removes high-frequency components of an inputted digital signal and inputs luminance signal, the band of which is limited to 4 MHz, into the PSNR calculator 153. The Y/C separator 152 separates a luminance signal from NTSC analog composite signal, which are sent out from the set-top box 14. The separated luminance signal has a band of 4 MHz. The PSNR calculator 153 calculates PSNR between the luminance signal from the low-pass filter 151 and the luminance signal from the Y/C separator 152.

摘要翻译： 具有6MHz的频带的图像经由压缩编码器11，分发服务器12和网络13分配到机顶盒（STB）14。图像质量监视装置15中的低通滤波器151去除高 输入数字信号的频率分量，并将其频带限制为4MHz的亮度信号输入到PSNR计算器153中.Y / C分离器152将从NTSC模拟复合信号中分离出的亮度信号从 分离的亮度信号具有4MHz的频带。 PSNR计算器153计算来自低通滤波器151的亮度信号和来自Y / C分离器152的亮度信号之间的PSNR。

公开(公告)号：US20050031226A1

公开(公告)日：2005-02-10

申请号：US10901186

申请日：2004-07-29

申请人： Osamu Sugimoto ,  Ryoichi Kawada ,  Atsushi Koike

发明人： Osamu Sugimoto ,  Ryoichi Kawada ,  Atsushi Koike

IPC分类号： H04N19/60 ,  G06K9/36 ,  G06K9/46 ,  H03M7/30 ,  H04N17/00 ,  H04N19/625

CPC分类号： H04N17/004 ,  H04N19/14 ,  H04N19/154 ,  H04N19/85

摘要： This invention is intended to reduce a line rate of a monitoring line necessary for transmission of a picture feature without complicating a system. A video signal xi (n0, n1) of each block is subjected to spread spectrum by multiplying the video signal xi(n0, n1) by a PN sequences SPN1 (n0, n1) (in a step S1). The resultant video signal is orthogonally transformed by DFT, DCT, WHT, or the like (in a step S2). An amplitude component Ai=|Xi(SE0, SE1)| of an arbitrary component (SE0, SE1) in a coefficient Xi(S0, S1) obtained by the steps S1 and S2 is extracted (in a step S3), and the extracted amplitude component is quantized with a step size M (in a step S4). The picture feature F[i] is given as a residue obtained under a modulus Nm of a quantized typical value obtained by the quantization (in the step S4) (in a step S5).

摘要翻译： 本发明旨在降低传输图像特征所需的监视线的线路速率，而不会使系统复杂化。 通过将视频信号xi（n0，n1）乘以PN序列SPN1（n0，n1）（步骤S1），对每个块的视频信号xi（n0，n1）进行扩频。 所得视频信号通过DFT，DCT，WHT等进行正交变换（步骤S2）。 振幅分量Ai = | Xi（SE0，SE1）| 提取通过步骤S1和S2获得的系数Xi（S0，S1）中的任意分量（SE0，SE1）（在步骤S3中），并且以步长M量化提取的振幅分量（步骤 S4）。 给出图像特征F [i]作为通过量化获得的量化典型值的模数Nm（在步骤S4中）（在步骤S5中）获得的残差。