Data hiding using visual secret sharing and joint fractional Fourier transform correlator

In this paper, we combine the visual secret sharing (VSS) scheme and the fractional Fourier transform (FrFT) to propose a new data hiding method. The cover and hidden images are used together to generate the two sharing data based on the VSS scheme. Then the FrFTs are applied to the sharing data to further encrypt them. To reconstruct the hidden image, both the two sharing data and the correct fractional order are required. The computer simulation results verify the effectiveness of the proposed method.