Color Digital Image Watermarking Based On New Anti-Arnold Transformation Algorithm

Along with the coming of digital time, multi-media digital world become diverse and colorful, digital products affected everyone's life. How to protect the digital products, which are tightly connected with us, had become more and more important and necessary. People use digital watermarking technology to protect digital image, digital music, etc. they put producer's information into digital image, and add Film Company's information into digital video, etc. digital watermarking is invisible in multi-media data, and it is hard to destroy. In this paper, new methods are exploited in watermarking embedding strategy and inspection based on new anti-Arnold theories.The innovative contributions are presented as follows:1. The periodicity of traditional anti-Arnold transformation is very long, so the operation is very complicated; it needs a great amount of time and memory. In this paper, according to a new anti-Arnold algorithm, extend it with different algorithms, which are applied in different environment, namely , different computer languages , then realize it in Matlab6.5 environment.2.there are many embedding algorithms of digital watermarking, in this paper, offered a new embedding algorithm, while imbedding, pile up scrambled original image and unscrambled watermark image, then restore the original image, so it realized the tight combination of original image and watermarking image. The scramble times of original image is optional, after the scramble process, the watermark image is scattered into the whole spatial space of original image; it enlarged the difficulty of extraction and inspection, and enhanced the anti-attack and security.From the experimental result, we can see the algorithm have a good robustness for the attack of irregular cutting and daubing.