Advanced Center-Folding based Reversible Hiding Scheme with Pixel Value Ordering
Dual image techniques have been broadly applied to reversible information hiding in recent years. Center folding strategy proposed by Lu et al. in 2015 compresses the secret symbol and then utilizes averaging to embed it into two stego-images. This effectively sustains the image quality and achieves a high embedding capacity with relatively little distortion. This study uses the center folding strategy to fold the secret message and embed them separately into two stego-images. Follow by embedding the remaining secret message the two stego-images again using the pixel value ordering method to increase the embedding capacity in the image.
KeywordsCenter-Folding Reversible Hiding Pixel Value Ordering
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