A novel copyright protection scheme based on Visual Secret Sharing

In this paper the concept of Visual Secret Sharing and Discrete Wavelet Transform (DWT), are used to split the watermark into two random binary images called shares. One share is generated during watermark embedding phase and is kept secret with an arbitrator. The other share can be extracted from the controversial image whenever needed. Both the shares can be combined to decode the original watermark. The proposed scheme aims at reducing the size of shares, improving the quality of extracted watermark, and decreasing the probability of false positives. Hence it offers better security when compared to the related schemes. The simulation results reveal that the proposed scheme is robust to several image processing attacks.