CDMA技术在数字视频水印系统中的应用
The Application of CDMA Technique in Digital Video Watermarking Systems
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摘要: 首先简单综述了基于CDMA原理的水印技术发展情况．结合CDMA通信原理和视频的运动信息，提出了一种鲁棒的基于MPEG运动矢量的扩频水印算法．实验结果显示，这种CDMA形式的运动矢量水印算法能保证视觉质量，并且能够抵抗几种典型的攻击．Abstract: The development of CDMA-based watermarking algorithm is summarized firstly. A novel robust spread-spectrum watermarking algorithm based on MPEG motion vector is proposed, which combines CDMA technique with the motion information in videos. Experimental results show that the algorithm can insure good visual quality and resist several typical attacks.
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