AN AMBIGUITY ATTACK RESISTANT ROBUST WATERMARKING ALGORITHM BASED ON DISCRETE WAVELET TRANSFORM

摘要

Ambiguity attack is a kind of common used watermarking attack methods, which can destroy most watermark algorithms. The few watermarking algorithms which can resist this attack are not robust. This paper shows a new ambiguity attack resistant algorithm based on discrete wavelet transform, which is independent on the watermarking algorithm it used. The experiment results show its validity of resisting ambiguity attacks. And by using discrete wavelet transform in watermark embedding, this algorithm become robust on compressing and filter.