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用于视频镜头突变切换检测的二次差分法和像素点匹配二次差分法

DOI: 10.11834/jig.20030264

Keywords: 计算机图象处理,镜头突变切换检测,二次差分法,像素点匹配法,像素点匹配二次差分法

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Abstract:

镜头切换检测是视频检索研究领域中一项基本的、重要的技术.对于数字视频镜头突变切换的检测,一般有模板匹配法、直方图法等基本算法,但这些算法在实际检测中通常达不到较高的检测精度.为此,提出了一种新的用以消除视频运动对镜头切换检测影响的检测算法,即二次差分法,和一种新的计算两帧图象帧间差的算法,即像素点匹配法,实验结果表明,二次差分法较之直接帧间差算法,明显地提高了镜头突变切换检测的检测精度,像素点匹配法较之现有基本帧间差算法总体地提高了检测精度,而像素点匹配二次差分法达到了最好的检测精度,它能够实现在无虚检或只有很小虚检的条件下,对镜头突变切换的无漏检检测.

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