A New Image Zero Watermark Algorithm based on SVD

摘要

Watermark algorithm based on temporal and transform can't avoid constrain of robustness and concealment, for they will embed watermark in origin signal. Zero watermarks solve this dilemma, because it will not embed any signal in origin signal. A new zero watermark algorithms is proposed in this paper. The result show it has good robustness, and can identify where has been damaged efficiently.