WSEAS Transactions on Mathematics
Print ISSN: 1109-2769, E-ISSN: 2224-2880
Volume 12, 2013
Application of ICA and Contourlet Transform in Image Watermarking
Authors: , , , ,
Abstract: Based on independent component analysis (ICA) and contourlet, this paper designs an important robust watermarking scheme that mainly consists of watermark embedding and extracting. The embedding is done by mixing the host image signals and the watermarking signals through , the linear system of ICA model. The extracting is achieved by estimating the demixing matrix and the watermarking signals through ICA model. The scheme takes advantage of human visual system (HVS) to conduct a self-adaptive computation of the scaling factor matrix. The experiment uses PSNR and NCC to evaluate its imperceptibility and robustness, finding that the scheme functions well in resisting frequent attacks including filter, noise, cropping and mirror.