IMPROVED COLOR DIGITAL WATERMARK ALGORITHM BASED ON SVM
Shi Qing-ling · Shandong Nongye Daxue xuebao · 2010
To enhance the robustness of the watermarking,an improved color watermarking algorithm based on Support Vector Machine is proposed in this paper.According to the embedding factor on HVS,the watermark is embedded after scrambling randomly by Hilbert to the host image position which is selected on the key providing by the copyright holder.The watermark is composed of two different parts;one is the logo watermark which is the true watermark in the watermark embedding;the other is the reference watermark which is used for choosing the feature vector to retrieval SVR training model.And the logo watermark is extracted by using a prediction technique based on support vector regression model.The experimental results show that the presented scheme is robust against various processing such as cropping,JPEG compressin,noise adding,etc.