Fragile Watermarking for H.264 Video Stream Authentication
Fragile Watermarking for H.264 Video Stream Authentication
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DOI：
10.1109/isda.2008.279
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发表时间：
2008-11
期刊：
影响因子：
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通讯作者：
Chuen-Ching Wang;Yu-Chang Hsu
中科院分区：
文献类型：
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作者：
Chuen-Ching Wang;Yu-Chang Hsu
H.264是当前最先进的视频压缩标准，与其他现有标准（如MPEG - 4和H.263）相比，在编码效率和质量方面有显著提高。该标准采用了许多新技术，如帧内预测、帧间预测和整数离散余弦变换（integer DCT），利用高运算复杂度来减少空间和时间信息。然而，大多数水印技术关注的是水印视频的质量，而非编码效率。因此，在本文中，提出了一种基于残差宏块的数字水印方案，残差宏块是实际宏块和预测宏块之间的差值。实验表明，所提出的水印算法易于实现，并且在解码器端无需原始视频即可直接提取水印。它为H.264视频流认证提供了一个良好的解决方案，并且编码效率也会相应提高。
H.264 is the currently state-of-the-art video compression standard performing significant improvement in coding efficiency and quality compared to other existing standard, such as MPEG-4 and H.263. The standard adapts a lot of novel techniques, like intra prediction, inter prediction and integer DCT(integer discrete cosine transform), to exploits high operational complexity for reducing spatial and temporal messages. However most of the watermarking treat the quality of the watermarked video rather than the coding efficiency. Accordingly in the paper, a digital watermarking scheme is proposed based on the residual macroblock which is the residues between actual macroblock and predicted macroblock. Experiments show that the proposed watermarking algorithm is easily achieved and the watermark can be directly extracted at the decoder side without the original video. It provides a good solution for H.264 video stream authentication and the coding efficiency will increase accordingly.