基于小波变换数字图像水印系统的抗攻击性研究

Anti-aggressive Research of Digital Image Watermark System Based on Wavelet Transform

针对计算机网络不断发展中多媒体版权难以保护问题,分析了数字水印的评估标准和数字图像小波分解原理;设计了一种基于DWT的二值水印算法系统,实验结果验证了该算法的有效性、可靠性、抗攻击性、不可见性;能够为媒体信息在防伪、防篡改、认证、保障数据安全和完整性等方面提供有效的技术保障。

With the continuous development of computer networks, it is more difficult to protect multimedia copyright. In view of the problem, the evaluation criteria of digital watermarking and principles of digital image wavelet decomposition arc is analyzed; a binary digital watermarking algorithm system based on DWT is designed in this paper. And the results prove that the watermarking images according to DWT are with validity, dependability, robustness and invisibility. It can provide effective protection for digital media forgery, falsification, authentication, security and intactness.