Blind Digital Watermarking of Low Bit-Rate Advanced H.264/AVC Compressed Video
Blind Digital Watermarking of Low Bit-Rate Advanced H.264/AVC Compressed Video
复制标题
DOI：
10.1007/978-3-642-03688-0_11
复制
发表时间：
2009-08
影响因子：
2.8
通讯作者：
Dawen Xu;Rangding Wang;Jicheng Wang
中科院分区：
文献类型：
--
作者：
Dawen Xu;Rangding Wang;Jicheng Wang
H.264/AVC以其高压缩比、低失真和适用于便携式电子设备等优点成为一种流行的视频编解码器。因此，版权保护和认证的问题，是适合这个标准变得非常重要。264/AVC中的视频盲水印算法。在编码端通过对亮度残差块中的量化直流系数稍加修改，将水印信息直接嵌入到H. 264/AVC视频中。将水印嵌入到残差中，避免了对视频的解压，降低了水印算法的复杂度。为了减少DC系数修改对视觉质量的影响，引入了块选择机制来控制DC系数的修改强度。实验结果表明，该方案可以达到足够的鲁棒性，同时保持感知质量。
H.264/AVC is becoming a popular video codec for its better compression ratio, lower distortion and applicability to portable electronic devices. Thus, issues of copyright protection and authentication that are appropriate for this standard become very important. In this paper, a blind video watermarking algorithm for H.264/AVC is proposed. The watermark information is embedded directly into H.264/AVC video at the encoder by modifying the quantized DC coefficients in luminance residual blocks slightly. The watermark embedded in the residuals can avoid decompressing the video and to decrease the complexity of the watermarking algorithm. To reduce visual quality degradation caused by DC coefficients modifying, block selection mechanism is introduced to control the modification strength. Experimental results reveal that the proposed scheme can achieve enough robustness while preserving the perceptual quality.