102 / 2016-05-24 16:06:28

Histogram Based Watermark Algorithm Resist to Geometric Attacks

digital watermark,histogram,geometric attacks,robustness

The histogram describes the statistical properties of the image pixels distribution and histogram shape is invariant to the geometric attacks. Typical histogram algorithms can resist translation and crop attacks, but the ability to resist rotation, scaling and JPEG compression attacks need improvement. In this paper we divide more bins in a group, introduce triple relationships to them and use election mechanism to improve detection efficiency. Experiment results show our algorithm have higher detection correct rate in rotation, scaling, JPEG compression attacks than previous algorithm.