A Secure and Lossless Adaptive Image Steganography with Mod-4 LSB Replacement Methods Using Image Contrast
نویسندگان
چکیده
An adaptive Steganography scheme is proposed in this paper. The adaptive quantization embedded is introduced and employed by block-wised fashion. We also constructed contrast-correlation distortion metric to optimally choose quantization steps for image blocks to guarantee more data being embedded in busy areas. Deferent form existing methods, our scheme embeds the AQE parameters together with message bits into the cover image by deference expanding algorithm. Simulation experiments show the proposed scheme can provide a good trade-o® between the perceptibility and the capacity.
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