Common benchmarks used in digital watermarking research(II)

Digital watermarking is an effect method that protects copyright of digital media, It has drawnextensive attention, But there isn't a good benchmark to evaluate digital watermarking algorithm. The paper summarizes benchmark of evaluating digital watermarking algorithm and the means of attacking digital watermarking algorithm .It is purpose that help to evaluate performance of the algorithm, improve the algorithm, make it have the more invisible, robust, security and accelerate practicable progress of the digital watermarking technology.