Research On Digital Watermarking Algorithm Based On Josephus Traversing And Fuzzy Clustering Theory

Digital watermarking technology embedded a special identify information (also known as watermarking) into the multimedia data by signal processing method, and thus play the role of copyright protection. The watermarking embedded in the host data should have some anti-attack (intentional and unintentional) capabilities, that is, the watermarking can satisfy invisibility and robustness.This paper proposed adaptive blind watermarking algorithm that combine Josephus traversing and fuzzy clustering. Modulate the original watermarking image by scrambling algorithm based on Josephus traversing, ensure the security of watermarking by determining the location of the embedded watermarking with pseudo-random sequence, adapt image by fuzzy clustering, solve the synchronization of watermarking by the relative stability of feature points of image, then ensure the invisibility and robustness of watermarking.The experiments show that the algorithm is of better invisibility and is robust against JPEG compression and attack such as cut, noise and filtering, and receives a good tradeoff between invisibility and robustness, and improves the dependability of detecting the watermarking, and can effectively protect image copyright.