文件名称：整数小波变换图像水印
文件大小：4.79MB
文件格式：PDF
更新时间：2021-08-25 11:31:23
数字水印
基于整数小波变换的数字图像水印实现，The proposed watermark embedding process is realized in integer wavelet transform (IWT) domain to defend the robustness property. Instead of inserting the watermark bits directly in the coefficients of cover media, an indirect embedding mechanism is proposed with the reference to a logistic map based secret key matrix which enhance the secrecy of the proposed embedding approach. Initially, the approximate sub band of the IWT transformed cover image is selected with the intention to embed the watermark.