A steganographic scheme for reversible information hiding with good visual quality suitable for small embedded data

In this paper, we propose a simple reversible data hiding method in spatial domain for digital images by exploiting the correlation characteristic of neighboring pixels in natural images. The proposed method embeds several secret bits into a block of two consecutive cover pixels whose values are equal. The experimental results show that the proposed method achieves very good visual quality at low hiding capacity in comparison with Tian's and Ni et al.'s methods.