Zero watermarking algorithm based on Zernike moments
基于Zernike不变矩的零水印算法

In order to implement the picture copyright protection, this article proposed a zero watermarking algorithm based on the Zernike moments. The rectangular revolves invariability of Zernike moments was used to withdraw picture characteristic point, and quantified it for the binary sequence as the zero watermarking. The other image used the same method to extract its feature and quantify for the binary sequence. Then comparison to zero watermarking was made to proof the copyright. The result indicated this method is very good to solute the contradictory question of robustness and imperceptibility.