Adaptive image watermarking method based on chaotic encryption
一种基于混沌加密的自适应图像水印方法

According to the charactersitics of the digital watermark, this paper proposed a kind of wavelet domain image digital watermarking technique using two-dimensional chaotic encrypt and human visual model. The meaningful gray watermarking image was encrypted by two-dimensional Logistic chaotic map. The block embedding intensity was calculated being combined with the human visual model so that the embedding and detection steps of encrypted binary watermark can be adaptively fulfilled in the multi-resolution wavelet coefficients of the host image. The experimental results have shown that this watermarking technique, in which the encrypting and embedding algorithms have less computational capacity, can endure regular digital image process and has good performance.