用于内容认证的半脆弱可逆视频水印算法

曾  骁; 陈真勇; 范  围; 陈  辉; 熊  璋

doi:10.11834/jig.20100802

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专辑

用于内容认证的半脆弱可逆视频水印算法
Invertible Semi-fragile Video Watermarking Algorithm Used for Content Authentication
2010年15卷第8期页码：1189
网络出版：2010-08-25，

纸质出版：2010
DOI： 10.11834/jig.20100802
稿件说明：

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曾骁, 陈真勇, 范围, 陈辉, 熊璋. 用于内容认证的半脆弱可逆视频水印算法[J]. 中国图象图形学报, 2010,15(8):1189. DOI： 10.11834/jig.20100802.

ZENG Xiao, CHEN Zhenyong, FAN Wei, CHEN Hui, XIONG Zhang. Invertible Semi-fragile Video Watermarking Algorithm Used for Content Authentication[J]. Journal of Image and Graphics, 2010, 15(8): 1189. DOI： 10.11834/jig.20100802.

摘要

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。

Abstract

This paper proposes an invertible semi-fragile video watermarking algorithm using a hash function to authenticate the MPEG-4 video contents. The proposed algorithm embeds two watermarks into I frame while encoding the YUV video to MPEG-4 format. One watermark using a hash function aims to authenticate the contents and embed the frame number for tamper localization between frames

and the other one based on direct coefficients and low-frequency coefficients is used for the detection of tamper localization within the frame. The experimental results show that the proposed algorithm is able to authenticate the video contents and detect the tamper localization

and it is robust for MPEG-4 compression. In addition

the proposed algorithm is exactly invertible

which means that the original video data is available as long as the watermarked video is credible.