Analysis and Improvement of SVD-Based Image Watermarking Algorithm
Xinwei Wang · Huadong Shifan Daxue xuebao. Ziran kexue ban · 2007
This paper analyzed some existing image watermarking algorithms using singular value decomposition(SVD) technique,and pointed out they have the problem of high error detec- tion rate of original image and randomly chosen images.With the analysis of SVD's properties a new algorithm was proposed.Experiments showed the new proposed algorithm can distinguish the watermarked image from unwatemarked original image.It can also significantly decrease error detection rate of randomly chosen images.This algorithm has good robustness.