Adaptive difference energy watermarking based on distribution of pixel energy
Ye Jin · Journal of PLA University of Science and Technology · 2009
To provide a novel means of copyright protection which could be used in the field of video content security,an adaptive difference energy watermarking based on the distribution of pixel energy was proposed.The watermark image was scrambled and the power adjustable threshold of the watermark's bearing region based on the Watson visual model was calculated.Whether to embed watermark in the region based on the comparison of threshold and energy difference was decided.Experiments show that this algorithm can enhance the robustness by avoiding areas of large energy difference on the premise of watermark unperception.