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：US06943827B2

公开(公告)日：2005-09-13

申请号：US10118261

申请日：2002-04-09

申请人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Shuichi Matsumoto

发明人： Ryoichi Kawada ,  Osamu Sugimoto ,  Masahiro Wada ,  Shuichi Matsumoto

IPC分类号： H04N17/00 ,  H04N17/02

CPC分类号： H04N17/00

摘要： A first characteristic value extracting unit extracts a characteristic value from a picture transmitted from a transmission side, and a second characteristic value extracting unit extracts a characteristic value from a picture received on a reception side. These extracted characteristic values are supplied to a central monitoring unit through low speed lines, respectively. In the central monitoring unit, an MSE (mean square error) is assessed from the data by an MSE assessing unit. The first and second characteristic value extracting units divide an input picture into blocks, subject the blocks to an orthogonal transformation, or subject the blocks to PN sequence multiplication before the orthogonal transformation, and extract and output orthogonal transformation coefficients. The MSE assessing unit determines the differences between corresponding coefficients on the transmission side and the reception side and squares the differences, adds the squared differences for every coefficients or every blocks, and assess an MSE based on the added values referred to a table. With this operation, the MSE can be effectively assessed using a smaller amount of extracted data (accordingly, slower speed lines can be used in the central monitoring unit).

摘要翻译： 第一特征值提取单元从从发送侧发送的图像中提取特征值，第二特征值提取单元从在接收侧接收的图像中提取特征值。 这些提取的特征值分别通过低速线路提供给中央监控单元。 在中央监测单位，MSE评估单位从数据评估MSE（均方误差）。 第一特征值提取单元和第二特征值提取单元将输入图像划分成块，将块进行正交变换，或者在正交变换之前对块进行PN序列乘法，并提取和输出正交变换系数。 MSE评估单元确定发送侧和接收侧的相应系数之间的差异，对差异进行平方，对每个系数或每个块添加平方差，并根据参考表的附加值来评估MSE。 通过此操作，可以使用较少量的提取数据有效地评估MSE（因此，中央监控单元可以使用较慢的速度线）。

公开(公告)号：US07738664B2

公开(公告)日：2010-06-15

申请号：US10957574

申请日：2004-10-05

申请人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

发明人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

IPC分类号： H04B3/00

CPC分类号： H04H20/12 ,  H04H20/22 ,  H04N5/04 ,  H04N5/60 ,  H04N21/439 ,  H04N21/44209

摘要： Characteristic amounts in each small region of audio signals transmitted in the working system and the standby system are extracted by characteristic amount calculators 6-1, 6-2. A characteristic amount comparator 7 compares the characteristic amounts and judges occurrence of a fault. Characteristic amount difference calculators 9-1, 9-2, ∥D∥ comparator 10, and faulty system judging unit 11 judges the system having a fault. Majority decision processor 12 and significance judging unit 13 enhance the reliability of the judgment. Delay difference of audio signals between systems is roughly detected by sub-sampling audio signals of two systems and comparing them, and then accurately detected without sub-sampling. Delay difference between audio signals is adjusted by the detected delay difference.

摘要翻译： 通过特征量计算器6-1,6-2提取在工作系统和备用系统中发送的音频信号的每个小区域中的特征量。 特征量比较器7比较特征量并判断故障的发生。 特征量计算器9-1,9-2，∥D‖比较器10和故障系统判断单元11判断具有故障的系统。 多数决定处理器12和有效性判断单元13提高判断的可靠性。 通过对两个系统的子采样音频信号进行比较，大致检测出系统之间音频信号的延迟差异，然后在不进行子采样的情况下准确检测。 通过检测到的延迟差来调整音频信号之间的延迟差。

公开(公告)号：US20090052679A1

公开(公告)日：2009-02-26

申请号：US12285272

申请日：2008-10-01

申请人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

发明人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

IPC分类号： H04R29/00

CPC分类号： H04H20/12 ,  H04H20/22 ,  H04N5/04 ,  H04N5/60 ,  H04N21/439 ,  H04N21/44209

摘要： Characteristic amounts in each small region of audio signals transmitted in the working system and the standby system are extracted by characteristic amount calculators 6-1, 6-2. A characteristic amount comparator 7 compares the characteristic amounts and judges occurrence of fault of a fault. Characteristic amount difference calculators 9-1, 9-2, ∥D∥ comparator 10, and faulty system judging unit 11 judges the system having a fault. Majority decision processor 12 and significance judging unit 13 enhance the reliability of the judgement. Delay difference of audio signals between systems is roughly detected by sub-sampling audio signals of two systems and comparing them, and then accurately detected without sub-sampling. Delay difference between audio signals is adjusted by the detected delay difference.

摘要翻译： 通过特征量计算器6-1,6-2提取在工作系统和备用系统中发送的音频信号的每个小区域中的特征量。 特征量比较器7比较特征量并判断故障的发生。 特征量计算器9-1,9-2，∥D‖比较器10和故障系统判断单元11判断具有故障的系统。 多数决定处理器12和有效性判断单元13提高判断的可靠性。 通过对两个系统的子采样音频信号进行比较，大致检测出系统之间音频信号的延迟差异，然后在不进行子采样的情况下准确检测。 通过检测到的延迟差来调整音频信号之间的延迟差。

公开(公告)号：US07876907B2

公开(公告)日：2011-01-25

申请号：US12285272

申请日：2008-10-01

申请人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

发明人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

IPC分类号： H04R29/00

CPC分类号： H04H20/12 ,  H04H20/22 ,  H04N5/04 ,  H04N5/60 ,  H04N21/439 ,  H04N21/44209

摘要： Characteristic amounts in each small region of audio signals transmitted in the working system and the standby system are extracted by characteristic amount calculators 6-1, 6-2. A characteristic amount comparator 7 compares the characteristic amounts and judges occurrence of fault of a fault. Characteristic amount difference calculators 9-1, 9-2, ∥D∥ comparator 10, and faulty system judging unit 11 judges the system having a fault. Majority decision processor 12 and significance judging unit 13 enhance the reliability of the judgement. Delay difference of audio signals between systems is roughly detected by sub-sampling audio signals of two systems and comparing them, and then accurately detected without sub-sampling. Delay difference between audio signals is adjusted by the detected delay difference.

摘要翻译： 通过特征量计算器6-1,6-2提取在工作系统和备用系统中发送的音频信号的每个小区域中的特征量。 特征量比较器7比较特征量并判断故障的发生。 特征量计算器9-1,9-2，∥D‖比较器10和故障系统判断单元11判断具有故障的系统。 多数决定处理器12和有效性判断单元13提高判断的可靠性。 通过对两个系统的子采样音频信号进行比较，大致检测出系统之间音频信号的延迟差异，然后在不进行子采样的情况下准确检测。 通过检测到的延迟差来调整音频信号之间的延迟差。

公开(公告)号：US20050154952A1

公开(公告)日：2005-07-14

申请号：US10957574

申请日：2004-10-05

申请人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

发明人： Ryoichi Kawada ,  Atsushi Koike ,  Masahiro Wada ,  Shuichi Matsumoto

IPC分类号： G01R31/28 ,  G06F11/00 ,  H04N5/04 ,  H04N5/60

CPC分类号： H04H20/12 ,  H04H20/22 ,  H04N5/04 ,  H04N5/60 ,  H04N21/439 ,  H04N21/44209

摘要： Characteristic amounts in each small region of audio signals transmitted in the working system and the standby system are extracted by characteristic amount calculators 6-1, 6-2. A characteristic amount comparator 7 compares the characteristic amounts and judges occurrence of a fault. Characteristic amount difference calculators 9-1, 9-2, ∥D∥ comparator 10, and faulty system judging unit 11 judges the system having a fault. Majority decision processor 12 and significance judging unit 13 enhance the reliability of the judgment. Delay difference of audio signals between systems is roughly detected by sub-sampling audio signals of two systems and comparing them, and then accurately detected without sub-sampling. Delay difference between audio signals is adjusted by the detected delay difference.

摘要翻译： 在工作系统和备用系统中发送的音频信号的每个小区域中的特征量由特征量计算器6-1,6-2提取。 特征量比较器7比较特征量并判断故障的发生。 特征量差计算器9-1,9-2，‖D‖比较器10和故障系统判断单元11判断具有故障的系统。 多数决定处理器12和有效性判断单元13提高判断的可靠性。 通过对两个系统的子采样音频信号进行比较，大致检测出系统之间音频信号的延迟差异，然后在不进行子采样的情况下准确检测。 通过检测到的延迟差来调整音频信号之间的延迟差。

公开(公告)号：US07068304B2

公开(公告)日：2006-06-27

申请号：US09934539

申请日：2001-08-23

申请人： Ryoichi Kawada ,  Masahiro Wada ,  Shuichi Matsumoto

发明人： Ryoichi Kawada ,  Masahiro Wada ,  Shuichi Matsumoto

IPC分类号： H04N17/00

CPC分类号： H04N17/00

摘要： In a transmission chain having series-connected a TSC unit, an encoder, a transmission path, a decoder, and an up-converter, characteristic value extracting units are connected to input/output points A, B, C, and D of these transmission processing units respectively. Each characteristic value extracting unit extracts characteristics like an average value m and a variance σ2 of luminance of a picture, for example. These characteristic values are transmitted to a central monitoring unit via a low-speed line. A characteristic value comparator compares the characteristic values. When a difference equal to or larger than a predetermined threshold value has occurred in the characteristic values, the characteristic value comparator decides that an abnormality has occurred in the image in transmission. According to the present invention, it is possible to provide an apparatus for assessing quality of a picture in transmission and an apparatus for remote-monitoring picture quality of a picture in transmission that are capable of assessing the picture quality of a transmission picture in high precision, during an actual transmission of the picture.

摘要翻译： 在具有串联连接的TSC单元，编码器，传输路径，解码器和上变频器的传输链中，特征值提取单元连接到这些传输的输入/输出点A，B，C和D 处理单位。 每个特征值提取单元例如提取像图像的亮度的平均值m和方差σ ^{2的特性。 这些特征值通过低速线路发送到中央监控单元。 特征值比较器比较特征值。 当在特征值中发生了等于或大于预定阈值的差异时，特征值比较器判定在发送中的图像中已经发生异常。 根据本发明，可以提供一种用于评估传输中的图像质量的装置和用于远程监视传输中的图像的图像质量的装置，其能够以高精度评估传输图像的图像质量 ，在图片的实际传输过程中。}