Study of Reversible Information Hiding Scheme Based on GHM and CBP

Take advantage of the feature that the energy distribution ratio is approximately 4.5:2.2:2.2:1.1 in the four LL₁ sub-images (LL₂, LH₂, HL₂ and HH₂) after first-order GHM multi-wavelet transform. Use the feather of image bit plane embedded strategy. Propose an information hiding scheme based on GHM and combination bit plane (CBP). LL₂ is embedded module of robust parameters. Embed hiding Information in LH₂ and HL₂ with RAID4 and fragile sign in HH₂. The position for embedding information of every sub-image is Bit Plane 0. Bit Plane 3 and Bit Plane 7 are auxiliary embedded positions by XOR. Before embedding, improve the consistence of the embedded data bits´ order and the character of the sub-image with the chaotic map and the genetic algorithm. The embedding sequence of each bit plane is traversal according to Knight-tour route. Experimental results indicate that the proposed scheme can increase invisibility by 19.92% averagely and robustness by 16.18%, and have excellent sensitivity of image processing.