Abstract
In this paper, we propose a new method for optical multiple-image encryption based onmultiplane phase retrieval and interference. An optical encoding system is developed in theFresnel domain. A phase-only map is iteratively extracted based on a multiplane phaseretrieval algorithm, and multiple plaintexts are simultaneously encrypted. Subsequently,the extracted phase-only map is further encrypted into two phase-only masks based on anon-iterative interference algorithm. During image decryption, the advantages and securityof the proposed optical cryptosystem are analyzed. Numerical results are presented todemonstrate the validity of the proposed optical multiple-image encryption method.
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