Zero-watermark Algorithm Based on SVD
Cheng Liang · Jisuanji gongcheng · 2009
Aiming at the limitation of watermark capacity that traditional Singular Value Decomposition(SVD) watermark algorithm shows,this paper proposes an image watermark algorithm based on SVD.The original image is divided into blocks,and several former Singular Values(SVs) are extracted from each block as the image characteristics,which are used to construct zero-watermark.Simulation experimental results show that the algorithm can reduce caculation complexty,increase the watermark capacity,and perform robustly.