摘要
提出一种基于小波域图像纹理特征的彩色图像盲水印算法。该算法根据图像小波变换后小波系数的特点选择视觉重要系数,量化嵌入二值水印序列。利用人类视觉系统的纹理掩蔽特性和照度掩蔽特性自适应调整量化间距,以保证水印的透明性。算法实现了水印的盲检测。仿真实验的结果表明,算法对各种常用的水印攻击方法具有较好的鲁棒性。
A color image blind watermarking algorithm based on wavelet image texture is proposed in this paper. The algorithm selects and quantities the wavelet coefficients to embed the binary watermark based on the characteristics of the wavelet transformed coefficients of images. It utilizes the HVS peculiarity to change the quantization interval adaptively and ensure the visibility of the watermark. The watermark can be detected without the original image. Experimental results show that the algorithm is robust to common attacks.
出处
《山西电子技术》
2007年第2期22-23,43,共3页
Shanxi Electronic Technology
关键词
小波变换
人类视觉系统
小波块
量化
wavelet
human visual system
wavelet block
quantization
