基于整数小波变换的彩色图像数字水印算法

基于整数小波变换的彩色图像数字水印嵌入和提取算法,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,将水印图像预处理后嵌入到彩色图像的Y分量的整数小波系数中,保证了水印的稳健性和不可觉察性.实验结果证明本算法实现的水印具有抗一般信号处理(如图像压缩、剪切等)能力,理论分析和实验结果证明了本算法的有效性和可行性.

Digital Watermarking Algorithm for Color Image Based on Integral Wavelet Transform

A digital watermarking algorithm for color image based on Integer Wavelet Transform has been proposed in this article.The original color image was transformed into the YIQ color space,a meaningful binary image as a watermarking images,using human visual system(HVS) characteristics,considered the watermark robustness and visibility of reunification,the watermark embedded in the color image Y integral component of the wavelet.The digital watermark is robust enough to image degradation.Experimental results have p roved that the method is robust to some image process such as sharpening,compression.Both theoretical analysis and experimental results show that this algorithm is reasonable and satisfactory.