A New Zero-watermark Algorithm Based on Chaotic Sequences and Wavelet Transform
Miaolong Liu · Geomatics & Spatial Information Technology · 2010
According to the conception of zero-watermarking,this paper proposed a zero-watermarking algorithm based on chaotic sequences and wavelet transform.The method realized embedding watermark by obtaining the extracted watermark image through the encrypted watermark and low-frequency sub-image after wavelet transform.Experimental result shows that the method is more robustness and improves transparency and security.