Study of information hiding algorithm based on GHM and color transfer theory

Abstract:

Taking the feature that the energy of the image would gather and spread on four components (LL ₂, LH ₂, HL ₂ and HH ₂) in the sub-image after first-order GHM multi-wavelet-transform. And by using the color control ability of lαβ color space in color transfer theory (CTT), an information hiding algorithm based on GHM-CTT is proposed. In this way, the robust parameters are embedded in the LL ₂, the hidden information is set in LH ₂ and HL ₂ with RAID4, and fragile sign is set in HH ₂. The consistence between the embedded data bits’ order and the embedded code of the sub-image is improved by using the chaotic mapping and the genetic algorithm. Experimental results indicate that the GHM-CTT can increase the imperceptibility by 15.72% averagely and robustness by 18.89% at least.