发明名称 |
METHOD AND SYSTEM FOR THE ESTIMATION AND COMPENSATION OF BRIGHTNESS CHANGES FOR OPTICAL FLOW CALCULATIONS |
摘要 |
In a video processing system scene shifts are detected and the need for adjusting the brightness between pairs of adjacent frames of a video motion picture is assessed. The need for brightness adjustment is assessed and a possible scene shift is detected by identifying homogeneous pixels in at least one frame of a pair of adjacent frames of the motion picture. The brightness of one of the adjacent frames is then adjusted and a scene shift is detected based on the ratio of the number of homogeneous pixels undergoing a substantial change in brightness relative to the total number of homogeneous pixels identified. When a need for a brightness adjustment is determined the brightness of one of the frames is adjusted before estimating optical flow between the frames. |
申请公布号 |
WO02077920(A2) |
申请公布日期 |
2002.10.03 |
申请号 |
WO2002US08841 |
申请日期 |
2002.03.25 |
申请人 |
DYNAPEL SYSTEMS, INC. |
发明人 |
GRIESSL, MAX;WITTKOP, MARKUS;WONNEBERGER, SIEGFRIED |
分类号 |
G06K9/40;G06K15/00;G06T;G06T5/00;G06T7/20;H04N1/46;H04N5/14 |
主分类号 |
G06K9/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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