Secure Image Display through Visual Cryptography: Exploiting Temporal Responsibilities of the Human Eye

Abstract

We propose a new protection scheme for displaying a static binary image on a screen. The protection is achieved by a visual cryptography algorithm that divides the target images into several divisions. The visual difference between the text and the background is induced by exploiting the temporal responsibilities of the human eye. With the results of our user study, we demonstrate that encrypted visual information was mentally recovered by the human visual system. Moreover, the images captured from our scheme do not provide any meaningful information to the human eye, so that our method provides a strong security measure against screenshot piracy.