Watermarking scheme based on wavelet transform, genetic programming and Watson perceptual distortion control model for JPEG2000

Embedding of the digital watermark in an electronic document proves to be a viable solution for the protection of copyright and for authentication. In this paper we proposed a watermarking scheme based on wavelet transform, genetic programming (GP) and Watson distortion control model for JPEG2000. To select the coefficients for watermark embedding image is first divided into 32×32 blocks. Discrete Wavelet Transform DWT of each block is obtained. Coefficients in LH, HL and HH subbands of each 32×32 block are selected based on the Just Noticeable Difference (JND). Watermark is embedded by carefully chosen watermarking level. Choice of watermarking level is very important. The two important properties robustness and imperceptibility depends on good choice of watermarking level. GP is used to obtain mathematical function representing optimum watermarking level. The proposed scheme is tested and gives a good compromise between the robustness and imperceptibly.