A Feasible Image Hiding Scheme Based on JPEG and VQ

Abstract

feasible image hiding scheme is proposed in this article. The goal of the proposed scheme is to obscurely deliver some images via a JPEG image file. Secret images are first encoded into binary indexes by vector quantization. Then, these indexes are embedded into JPEG file of cover image by modifying its quantized coefficients and quantization factors in some invertible way. The stego-file keeps the JPEG syntax, which can be displayed by any standard JPEG decoder, without noticeable distortion. A legal receiver with the key can completely extract the secret images and restore the original JPEG image file at the same time. Simulation results demonstrate that the proposed scheme is practicable.