The Property of Frequency Shift in 2D-FRFT Domain With Application to Image Encryption

The Fractional Fourier Transform (FRFT) has been playing a unique and increasingly important role in signal image processing. In this letter, we investigate the property of frequency shift two-dimensional FRFT (2D-FRFT) domain. It is shown that magnitude reconstruction from phase information shift-invariant 2D-FRFT domain, enhancing robustness encryption, an multimedia security task. Experiments are conducted to demonstrate effectiveness against attack, improving encryption.