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用于内容认证的半脆弱可逆视频水印算法

DOI: 10.11834/jig.20100802

Keywords: 视频水印,MPEG-4,半脆弱,可逆,篡改定位

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Abstract:

提出了一种运用哈希函数进行MPEG-4内容认证的半脆弱可逆视频水印算法。在YUV视频进行MPEG-4编码的I帧中嵌入两个水印,一个运用哈希函数进行内容完整性验证并嵌入帧序号进行帧间篡改定位,另一个基于直流系数和低频系数用于帧内篡改定位。实验结果表明,算法能够对视频内容进行验证并实现篡改定位,且对MPEG-4压缩具有鲁棒性。另外,算法具有可逆性,能够在视频内容可信的前提下进行无损恢复。

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