Perceptual Steganography Based on Adaptive Quantization-Embedder

Abstract

A steganographic scheme based on adaptive quantization-embedder is proposed in this paper. The scheme uses the new constructed contrast-correlation distortion metric to optimally choose quantization steps for image blocks to guarantee more data being embedded in busy areas. Different form existing methods, our scheme embeds the AQE parameters together with message bits into the cover image. Simulation experiments show the proposed scheme can provide a good trade-off between the perceptibility and the capacity.