一种基于整数小波变换的彩色图像盲水印技术

A Blind Watermarking Technique of Color Image Based on Integer Wavelet Transform

提出了一种在静止的彩色图像中嵌入盲水印的鲁棒算法,用彩色图像作为数字水印的载体,将有意义的二值图像作为水印图像,利用人类视觉系统(HVS)特性,综合考虑水印的鲁棒性和不可见性,将水印信息嵌入到小波分解的低频域(LLn),通过理论分析和实验结果证明:算法满足水印的抗JPEG压缩攻击、复杂度较低、实用性较强、对原图的影响较小,具有可行性和有效性等特点。

As a new technology of digital copyright protection, digital watermarking gains more and more attention. A ro- bust algorithm of static color image embedded in blind watermarking is proposed. Using color images as digital water- mark carrier, meaningful binary images as water images, watermark information is embedded into the wavelet decomposi- tion of the low-frequency domain （LLn）, using characteristics of the human visual system （HVS）, considering the wa- termark robustness and invisibility. Theoretical analysis and experimental results show that the algorithm can meet re- quirements of anti-JPEG compression attacks of watermark, and its low complexity, stronger practicality, less impact on the original photograph have feasibility and effectiveness.