title: Fractional Fourier domain optical image hiding using phase retrieval algorithm based on iterative nonlinear double random phase encoding.
abstract: We present a novel image hiding method based on phase retrieval algorithm under the framework of nonlinear double random phase encoding in fractional Fourier domain. Two phase-only masks (POMs) are efficiently determined by using the phase retrieval algorithm, in which two cascaded phase-truncated fractional Fourier transforms (FrFTs) are involved. No undesired information disclosure, post-processing of the POMs or digital inverse computation appears in our proposed method. In order to achieve the reduction in key transmission, a modified image hiding method based on the modified phase retrieval algorithm and logistic map is further proposed in this paper, in which the fractional orders and the parameters with respect to the logistic map are regarded as encryption keys. Numerical results have demonstrated the feasibility and effectiveness of the proposed algorithms.
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Wang
authors.forename: Wen
authors.initials: W
authors.lastname: Chen
authors.forename: Xudong
authors.initials: X
authors.lastname: Chen
mesh_terms: D000465:Algorithms; D016494:Computer Security / Q000295:instrumentation*; D005583:Fourier Analysis; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods*; D012637:Security Measures