关键词: 混沌, m序列, 自适应小波, 人眼视觉特性

Abstract:

Most wavelet-based digital watermarking algorithms determine whether to embed the watermark according to the magnitude of the wavelet coefficients in low frequency,but this kind of schemes is not good at imperceptibility for the watermarking in the image.In view of the question,an image watermarking algorithm based on chaos encryption and the adaptive wavelet is proposed in this paper.Disordered watermarking by chaos and the m series are adopted to look for texture area of the host image by HVS,and to insert the watermarking into the high frequency coefficient of the adaptive wavelet of texture area.The experimental results show that the algorithm not only increases security of the watermarking,but is also better in robust and invisibility on implementing the watermarking.

Key words: chaos;m series;adaptive wavelet;HVS