Abstract
We propose a new method for image encryption based on Hartley transforms that is a real transform and can be realized by spatially incoherent or coherent illumination. The proposed optical implementation is based on a Michelson-type interferometer in which the pure random intensity is distributed at the Hartley plane in encryption. Computer simulations prove it is possible. A Hartley hologram method is also given and described to resolve the sign ambiguity problem that would be encountered in image reconstruction.
© 2006 Optical Society of America
Full Article | PDF ArticleMore Like This
Linfei Chen and Daomu Zhao
Opt. Lett. 32(7) 767-768 (2007)
Zhengjun Liu and Shutian Liu
Opt. Lett. 32(7) 766-766 (2007)
Linfei Chen and Daomu Zhao
Opt. Express 14(19) 8552-8560 (2006)