基于整数小波变换的图像鉴定数字水印技术

摘要

A digital watermarking technique based on integer wavelet transform is proposed in this paper. First,the watermark sequence is generated from the message digest using the output of the Hash function with the original image's significance edge map. Then,a nonlinear multiple bits embedding method using a shifting window is proposed. Furthermore,this paper designs a secure detect algorithm without the original image but with high probability detect ability.Experiments show that it is a useful method in image authentication.%该文提出了一种基于整数小波变换的数字水印技术。首先，由原始图像边缘图的Hash函数输出的信息摘要比特流生成水印序列。然后，提出了一种整数小波域利用平移窗的多比特水印嵌入的非线性方法，并实现了脱离原始图像的具有高概率检测能力的水印检测方法。实验结果表明这是一种行之有效的图像鉴定方法。