| 基于可变窗的镜头边界检测算法 |
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| 引用本文： | 蒋兴浩,孙锬锋,方之昕,李荣杰,冯冰.基于可变窗的镜头边界检测算法[J].上海交通大学学报,2009(11). |
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| 作者姓名： | 蒋兴浩 孙锬锋 方之昕 李荣杰 冯冰 |
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| 作者单位： | 上海交通大学信息安全工程学院;上海市信息安全综合管理技术研究重点实验室; |
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| 基金项目： | 国家自然科学基金项目(60702042,60802057); 国家高技术研究发展计划(863)项目(2009AA01Z407) |
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| 摘 要： | 为了解决传统镜头边界检测算法的漏检和误检问题,对判决方法进行研究,提出了可变窗概念.当一个镜头中画面变化激烈时,减少窗口跨度;在平缓画面的镜头通过渐变过渡到另一个镜头时,增加窗口跨度.该算法统计各帧的分块直方图作为特征,结合可变窗判别机制,对非压缩域中的视频帧进行镜头边界检测.实验证明,该算法提高了整体镜头查全率,同时也降低了由于镜头画面激烈而发生的误检率.
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| 关 键 词： | 可变窗 不连续度 分块直方图 镜头边界检测 |
A Video Shot Boundary Detection Method Based on Variable-Size Window |
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| JIANG Xing-hao,SUN Tan-feng.A Video Shot Boundary Detection Method Based on Variable-Size Window[J].Journal of Shanghai Jiaotong University,2009(11). |
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| Authors: | JIANG Xing-hao SUN Tan-feng |
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| Institution: | JIANG Xing-hao~(1,2),SUN Tan-feng~(1,FANG Zhi-xin~1,LI Rongjie~1,FENG Bing~1(1.School of Information Security Engineering,Shanghai Jiaotong University,Shanghai 200240,China,2.Shanghai Information Security Management and Technology Research Key Laboratory,China) |
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| Abstract: | This article introducd the variable-size window to solve the false and leak detections in traditional shot boundary detection methods.It can reduce its size when there is fierce change in the frame within a shot and increase its size when the one shot transforms into another shot through gradual transform. This method calculates the sub-frame histogram in every uncompressed frame and use variable-size window to detect the shot boundary.The experiments verify that this method can reduce leak detections and f... |
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| Keywords: | variable-size window discontinuity sub-frame histogram shot boundary detection |
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