Data Hiding for Color Image by Rubik’s Cube

Abstract

In this paper, we proposed a novel Rubik’s cube hiding scheme for the RGB images. The Rubik’s cube is a $256\times 256\times 256$ index composed of sub-cube $3\times 3\times 3$ matrices which were based on the RGB color components. Hiding sequence was setup for the sub-cube which was based on the eye sensitivity, from least to most, to colors B, R and G, respectively. Experimental results showed that the proposed scheme has high hiding capacities and PSNRs. The hiding capacity may also be manipulated by using different sized sub-cube matrices.