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基于MSSIM商一致性的视频插帧和删帧篡改检测

DOI: 10.13190/j.jbupt.2015.04.018, PP. 86-90

Keywords: 视频取证,插帧和删帧篡改,结构相似度均值,切比雪夫不等式

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Abstract:

插帧和删帧是常见的视频帧间篡改方式,针对此研究问题,提出一种基于结构相似度均值(MSSIM)商的一致性检测算法.对于一段连续拍摄的视频,由于视频内容的连续性,相邻帧之间的MSSIM商具有连续现象.而对于经过插帧或删帧篡改的视频,其篡改点位置的MSSIM商会发生突变,从而破坏其一致性.为此,该算法首先计算每相邻两帧间的MSSIM值,之后对相邻MSSIM求商并以此作为特征,而后两次利用切比雪夫不等式及阈值法对提取特征进行异常点检测,从而实现对视频插帧和删帧的篡改检测及定位.实验结果表明,该算法对视频插帧和删帧篡改具有较高的检测率.

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