.Study of information hiding algorithm based on GHM and color transfer theory[J].Optoelectronics Letters,2009,5(6):454-458 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. Hits: 3787 Download times: 345 View Full Text    Download reader