数字水印的白噪声鲁棒性测试

Robustness Testing of Digital Watermarking Under White Noise

随着网络技术和数字技术的发展,数字水印在版权保护、数据鉴别、数字产品认证领域有着广泛的应用前景。文章介绍了数字水印的基本原理和实现数字水印嵌入和提取的DCT算法,并在matlab环境下,对有白噪声攻击的图像实现了水印的提取测试了它的鲁棒性。

With the development of network technology and digital technique, the watermarking has the applied prospect broadly in the fields such as copyright protection, data discriminating ,digital product attestation. The paper introduces digital water marking’s basic theories and DCT algorithms that can realize watermarking embedding and extraction. In the MATLAB environment, we achieve digital watermarking’s extraction which includes white noise aggression, and test its robustness.