公开(公告)号：US07233348B2

公开(公告)日：2007-06-19

申请号：US10275474

申请日：2001-05-29

申请人： Alexandre J Bourret

发明人： Alexandre J Bourret

IPC分类号： H04N17/02

CPC分类号： H04N17/004

摘要： A non-intrusive test method for video sequences correlates a number of quality indicators derived from a sequence with a matrix of constants to predict a quality score for the sequence.

摘要翻译： 用于视频序列的非侵入性测试方法将从序列获得的多个质量指标与常数矩阵相关联以预测序列的质量得分。

公开(公告)号：US08508597B2

公开(公告)日：2013-08-13

申请号：US10560448

申请日：2004-06-04

申请人： Alexandre J Bourret ,  David S Hands ,  Damien Bayart ,  Andrew G Davis

发明人： Alexandre J Bourret ,  David S Hands ,  Damien Bayart ,  Andrew G Davis

IPC分类号： H04N17/00 ,  H04N17/02

CPC分类号： H04N17/004 ,  G06T7/001 ,  H04N17/02

摘要： A method and system for automated video quality assessment which reduces the adverse effects of sub-field/frame misalignments between the reference and test sequences. More particularly, the invention provides for misalignments down to a sub-field/frame level to be handled by individually matching sub-field/frame elements of a test video field/frame with sub-field/frame elements from a reference video field/frame. The use of a matching element size that is significantly smaller than the video field/frame size enables transient sub-field/frame misalignments to be effectively tracked.

摘要翻译： 一种用于自动视频质量评估的方法和系统，其减少了参考和测试序列之间的子场/帧失准的不利影响。 更具体地说，本发明提供了通过将来自测试视频场/帧的子场/帧元素与来自参考视频场/帧的子场/帧元素单独匹配来处理的子场/帧级别的未对准 。 使用明显小于视频字段/帧大小的匹配元素大小使得能够有效地跟踪瞬时子场/帧未对准。

公开(公告)号：US20100053336A1

公开(公告)日：2010-03-04

申请号：US12594436

申请日：2008-02-27

申请人： Alexandre J. Bourret

发明人： Alexandre J. Bourret

IPC分类号： H04N17/00

CPC分类号： H04N17/004

摘要： A system and method for evaluating a video signal comprising a plurality of video frames. In the plurality video frames, the number of pixels changed from one frame to the next are analysed and each frame is identified as being a repeat if a set proportion of the pixels present in the current frame match those present in the previous frame. The resultant pattern of repeat frames in the video signal is recorded. The resultant pattern is then scanned to determine whether or not a given repeat frame is part of a temporally repetitive pattern and those repeat frames not determined to be part of the temporally repetitive pattern are identified. As result of the above, video quality assessment is able to treat these two types of temporal artefact separately so as to distinguish between the almost invisible regular frame loss and the visually disturbing irregular frame loss.

摘要翻译： 一种用于评估包括多个视频帧的视频信号的系统和方法。 在多个视频帧中，分析从一帧到下一帧改变的像素数，并且如果当前帧中存在的像素的设定比例与前一帧中存在的像素的比例相同，则将每帧识别为重复。 记录视频信号中的重复帧的合成模式。 然后扫描所得到的图案以确定给定的重复帧是否是时间重复图案的一部分，并且识别出未被确定为时间重复图案的一部分的那些重复帧。 作为上述的结果，视频质量评估能够分别处理这两种类型的时间假象，以区分几乎看不见的常规帧丢失和视觉上扰乱的不规则帧丢失。

公开(公告)号：US08150234B2

公开(公告)日：2012-04-03

申请号：US12594436

申请日：2008-02-27

申请人： Alexandre J Bourret

发明人： Alexandre J Bourret

IPC分类号： H04N5/94 ,  H04N9/88 ,  H04N17/00 ,  H04N17/02

CPC分类号： H04N17/004

摘要： A system and method for evaluating a video signal comprising a plurality of video frames. In the plurality video frames, the number of pixels changed from one frame to the next are analysed and each frame is identified as being a repeat if a set proportion of the pixels present in the current frame match those present in the previous frame. The resultant pattern of repeat frames in the video signal is recorded. The resultant pattern is then scanned to determine whether or not a given repeat frame is part of a temporally repetitive pattern and those repeat frames not determined to be part of the temporally repetitive pattern are identified. As result of the above, video quality assessment is able to treat these two types of temporal artefact separately so as to distinguish between the almost invisible regular frame loss and the visually disturbing irregular frame loss.

摘要翻译： 一种用于评估包括多个视频帧的视频信号的系统和方法。 在多个视频帧中，分析从一帧到下一帧改变的像素数，并且如果当前帧中存在的像素的设定比例与前一帧中存在的像素的比例相同，则将每帧识别为重复。 记录视频信号中的重复帧的合成模式。 然后扫描所得到的图案以确定给定的重复帧是否是时间重复图案的一部分，并且识别出未被确定为时间重复图案的一部分的那些重复帧。 作为上述的结果，视频质量评估能够分别处理这两种类型的时间假象，以区分几乎看不见的常规帧丢失和视觉上扰乱的不规则帧丢失。

公开(公告)号：US07133066B2

公开(公告)日：2006-11-07

申请号：US10221780

申请日：2001-03-29

申请人： Alexandre J Bourret

发明人： Alexandre J Bourret

IPC分类号： H04N17/00

CPC分类号： H04N5/14 ,  G06K9/6203 ,  G06T7/32 ,  G06T7/38 ,  G06T2207/10016 ,  H04N5/073 ,  H04N17/004

摘要： A method of aligning a first image with a second image, the method includes approximately locating the second image; scaling the first image to the approximate size of the second image; positioning the scaled first image over the approximate location of the second image; generating a measure of fit between the first image and the second image; re-positioning the second image and repeating the above steps to obtain an increased measure of fit value. A method of synchronizing a first sequence of images with a second sequence of images includes creating a first index pointer identifying an image in the first sequence of images; creating a second index pointer identifying an image in the second sequence of images; comparing the image identified by the first index pointer with the image identified by the second index pointer; incrementing the first index pointer to identify the subsequent image in the first sequence of images; and repeating the above steps until the image identified by the first index pointer matches the image identified by the second index pointer.

摘要翻译： 一种将第一图像与第二图像对准的方法，该方法包括大致定位第二图像; 将第一图像缩放到第二图像的大致尺寸; 将缩放的第一图像定位在第二图像的大致位置上; 产生第一图像和第二图像之间的拟合度量; 重新定位第二图像并重复上述步骤以获得增加的拟合值测量值。 使第一图像序列与第二图像序列同步的方法包括：创建识别第一图像序列中的图像的第一索引指针; 创建识别第二图像序列中的图像的第二索引指针; 将由第一索引指示符标识的图像与由第二索引指针标识的图像进行比较; 增加第一索引指针以识别第一图像序列中的后续图像; 并重复上述步骤，直到由第一索引指示符标识的图像与由第二索引指针指定的图像相匹配。