A Novel Adaptive Reversible Watermarking Algorithm Based on Wavelet Lifting Scheme

摘要

A new adaptive reversible watermarking algorithm based on wavelet lifting scheme is proposed in this letter. In the algorithm, watermarking image is embedded in the sub-band LL_1 generated from 1-level wavelet lifting scheme, and the position information with small size is kept as a secret matrix, the threshold value can be adaptively selected according to the peak-signal to noise rate, such that watermarked image has better visual effect, the novelty of the algorithm lies in that it not only is reversible, but also it is robust to JPPEG compression attack, this is seldom discussed in existing relative literatures. The experimental results show the effectiveness of the scheme in the end.