On optimal color coordinate selection for wavelet-based color image watermarking

In ubiquitous multimedia applications, color images are the basic components of multimedia systems. Although many research has been devoted to develop proper watermarking procedures using multiresolution-based transformation, most of these investigations faced the watermarking problem from a gray scale point of view. In this paper, different color spaces which commonly used to represent color images are tested and compared for wavelet-based data hiding approaches in order to find the best candidate with respect to robustness and transparency of the final watermarked image.