keyframe
代码说明：
视频的关键帧计算，和关键帧提取，附有实验报告(Video key frame basis, and key frame extraction, with test report)
文件列表：
KeyFrameDiff
............\241.png,26001,2010-05-20
............\247.png,25913,2010-05-20
............\253.png,25929,2010-05-20
............\270.png,23177,2010-05-20
............\29.png,25213,2010-05-20
............\31.png,95558,2010-05-20
............\36.png,25736,2010-05-20
............\56.png,99383,2010-05-20
............\60.png,94066,2010-05-20
............\64.png,99220,2010-05-20
............\EulerDistance.m,371,2009-05-28
............\EulerDistanceDiff.asv,380,2009-05-27
............\EulerDistanceDiff.m,281,2009-05-28
............\ExtractKeyFrame.asv,2766,2010-05-18
............\ExtractKeyFrame.m,2766,2010-05-18
............\extremum.m,463,2009-05-22
............\FrameDiffMean.m,167,2009-05-27
............\FrameDiffVar.m,165,2009-05-27
............\FrameNum.m,57,2009-06-01
............\psintrowalk.avi,2336918,2007-05-21
............\road.avi,19463168,2010-05-17
............\roadkey.avi,578560,2010-05-20
............\SimilarRatioDiff.m,304,2009-05-27
............\untitled.asv,5795,2010-05-20
............\untitled.fig,3731,2010-05-20
............\untitled.m,5879,2010-05-20
............\vipmen.avi,16442880,2010-05-17
............\vipmenkey.avi,578560,2010-05-20
report.doc,792576,2010-07-19
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