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Blind Digital Watermarking of Low Bit-Rate Advanced H.264/AVC Compressed Video

机译：低比特率高级H.264 / AVC压缩视频的盲数字水印

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摘要

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.
机译：H.264 / AVC以其更好的压缩率，更低的失真和对便携式电子设备的适用性而成为流行的视频编解码器。因此，适用于该标准的版权保护和认证问题变得非常重要。提出了一种针对H.264 / AVC的盲视频水印算法。通过稍微修改亮度残差块中的量化DC系数，将水印信息直接嵌入到编码器的H.264 / AVC视频中。嵌入残差中的水印可以避免对视频进行解压缩，并降低水印算法的复杂性。为了减少由于直流系数修改引起的视觉质量下降，引入了块选择机制来控制修改强度。实验结果表明，该方案能够在保持感知质量的同时达到足够的鲁棒性。

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