title: Multiple-image encryption by compressive holography.
abstract: We present multiple-image encryption (MIE) based on compressive holography. In the encryption, a holographic technique is employed to record multiple images simultaneously to form a hologram. The two-dimensional Fourier data of the hologram are then compressed by nonuniform sampling, which gives rise to compressive encryption. Decryption of individual images is cast into a minimization problem. The minimization retains the sparsity of recovered images in the wavelet basis. Meanwhile, total variation regularization is used to preserve edges in the reconstruction. Experiments have been conducted using holograms acquired by optical scanning holography as an example. Computer simulations of multiple images are subsequently demonstrated to illustrate the feasibility of the MIE scheme.
authors.affiliation: Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Di
authors.forename: Kangfeng
authors.initials: K
authors.lastname: Zheng
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.forename: Edmund Y
authors.initials: EY
authors.lastname: Lam
authors.forename: Taegeun
authors.initials: T
authors.lastname: Kim
authors.forename: You Seok
authors.initials: YS
authors.lastname: Kim
authors.forename: Ting-Chung
authors.initials: TC
authors.lastname: Poon
authors.forename: Changhe
authors.initials: C
authors.lastname: Zhou