Adaptive steganography is to embed moderate message bits to gain the optimum trade-off between capacity and imperceptibility.In this paper

an adaptive steganographic method is proposed based on the quantization-based embedding mechanism.The message bits are embedded into triple-pixel differences constructed by the Hilbert curve scanning order through the proposed method.Because the partition codebook used in the quantization-based embedding phase is built up based on the perceptual characteristics

the proposed method can achieve good performance both on capacity and distortion.