A new algorithm for blind color image watermarking
Zhao Zeng-zhu · Applied science and technology · 2006
In this paper a new digital watermark algorithm based on DCT region luminance component of color image is proposed.The algorithm adopts the relation between a secret key and watermark to embed the binary image into DCT coefficients of color image luminance components as watermark.The watermark can be extracted without the original image and implements blind extraction of the hidden information.Experimental results show that the proposed watermarking scheme is good in transparency and robustness against various attacks such as JPEG compression,geometrie clipping,and high pass filtering etc.