Digital Image Watermarking Algorithm Based on DWT and SVD
Weiyi Wei · 2005
This paper proposed a watermarking algorithm based on discrete wavelet transform(DWT) of image and singular value decomposition(SVD). The original image is decomposed with DWT,the watermarking image is decomposed with SVD after chaotic scrambling,then the singular values of watermarking are embeded into all subbands of decomposed original image.Based on the ways of attack,select different subband to pickup the watermarking.Experiment results confirmed that the proposed watermarking algorithm was robust to geometric attack and imnoise,JPEG compression etc.