A New Digital Watermarking Algorithm Based on DWT and SVD
Bo Liu · Harbin Ligong Daxue xuebao · 2010
Digital watermark technology is a new kind of protection measure of digital media,which inserts special information into some digital medium such as image,voice,video and text files in order to protect identifier,remark and copyright.This paper proposed a watermarking algorithm based on discrete wavelet transform(DWT) ofimage and singular valued composition(SVD).The original image is decomposed with DWT,the watermarking image is decomposed with SVD after chaotic scrambling,and then the singular values of watermarking are embedded into some coefficients of decomposed original image.Experiment results confirm that the proposed watermarking algorithm is robust to common attack and geometric attack,etc.