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 (LL₂, LH₂, HL₂ and HH₂) 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 LL₂, the hidden information is set in LH₂ and HL₂ with RAID4, and fragile sign is set in HH₂. 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.

Keywords

Genetic Algorithm / Cover Image / Chaotic Mapping / JPEG2000 Compression / Information Hiding

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