Improved Digital Image Watermarking Based on K-Means Algorithm
Jing Sun · Computer Engineering and Applications Journal · 2006
In this paper,a digital image watermarking algorithm based on K-means in frequency domain is proposed.This method extracts the RGB components from the color image and divides the RGB components into blocks and transforms it by DCT,then clusters these DC coefficients which has been extracted from transformed coefficients then embeds the scrambled watermark into the bigger ones.Experimental results show that the watermark is imperceptible and the proposed method is robust against image attacks especially to JEPG compression.