A New Image Protection and Authentication Technique Based on ICA

摘要

Based on chaotic communication and independent component analysis, an image protection and authentication technique is proposed. We modulate a watermark by chaotic signal and embed it in watermark host vector which is established in terms of the coefficients in DWT domain. When the author and the legal user want to authenticate digital image, they can detect and extract the watermark by using ICA and private key. Experimental results show that robustness of the watermarking satisfies both of their demands.