Optical implementation of image encryption using random phase encoding

Publisher Website
Google Scholar
Abstract
In the optical implementation of image encryption using random phase encoding proposed by Re´fre´gier and Javidi the random phase mask is not band limited. Speckle noise can thus destroy optical reconstruction of the encrypted images. We demonstrate encryption of speckle‐free kinoforms by smoothed random phase masks. Optical verification of the encrypted images is shown. © 1996 Society of Photo−Optical Instrumentation Engineers.