An Algorithm of Digital Watermarking Based on ICA
Chen Ren-an · Computer Knowledge and Technology · 2010
An algorithm of digital watermarking based on Independent Component Analysis (ICA) is proposed to improve the robustness of digital watermarking. Firstly,At first the original image is decomposed by DWT,then the approximation image is embedded with preprocessed watermark. The watermark is abstracted resorting to Fast Independent Component Analysis (FastICA). The results of emulation under Matlab have demonstrated that the proposed approach is robust against common signal processing such as JPEG compression,noise,cropping and so on.