Multi-channel public watermarking scheme for color image in DWT domain
Xiaowei Chen · Jisuanji gongcheng yu sheji · 2008
A multi-channel public watermarking scheme is presented to color image in DWT domain.In the scheme,the special masking characters of human visual system are taken into account.First,the original image is transformed from the RGB color space into the YCbCr,which has the excellent independence of every channel.Secondly,the information of the carrier image is deeply mined in every channel furthermore;the embedding tolerance of watermarking is adaptively calculated according to the content of the carrier image.Finally the watermarking is embedded into the carrier image in DWT domain.The experiment results indicated the scheme has good im-perceptibility and robustness to resist the normal attacks of adding noises,JPEG compression,clipping,image enhancement and the attacking every channel of color image.