Scrambling Technology in the Digital Watermarking

In recent years, the digital watermarking technology has been widely used for the copyright protection of the digital images, and a lot of the digital watermarking schemes are proposed. This paper studies the application of shuffling techniques in the digital watermarking and proposes a standard measure of the scrambling degree. The criterion measure can help us judge to what extent an image should be scrambled in order to obtain the best robustness. Finally, this paper puts forward two kinds of scrambling technologies applied in the watermarking system, and the experimental results show that the scrambling technology is very effective in keeping resilience to cropping attack.