摘要
提出一种新的基于修正Chirp-Fourier变换的数字水印算法,该算法直接在空域嵌入多分量Chirp信号作为水印信息,而用修正Chirp-Fourier变换对这一特定结构的水印信息进行盲检测.仿真结果表明,该算法具有较高的透明性,对于通常的图象处理和攻击也具有较好的鲁棒性.
A new watermarking algorithm based on modified Chirp-Fourier transform is proposed. In this technique, chirp typed watermark is embedded in the spatial domain directly, and detected by Modified Chirp-Fourier transform. The experimental results show that this technique can make the watermarking perceptual invisibility and be detected quickly, and it is also robustness to some common image processing.
出处
《河南科学》
2006年第4期539-542,共4页
Henan Science
基金
国家自然科学基金资助项目(60472044)
