Multiple-3D-object secure information system based on phase shifting method and single interference

Abstract

We propose a multiple-3D-object secure information system for encrypting multiple three-dimensional (3D) objects based on the three-step phase shifting method. During the decryption procedure, five phase functions (PFs) are decreased to three PFs, in comparison with our previous method, which implies that one cross beam splitter is utilized to implement the single decryption interference. Moreover, the advantages of the proposed scheme also include: each 3D object can be decrypted discretionarily without decrypting a series of other objects earlier; the quality of the decrypted slice image of each object is high according to the correlation coefficient values, none of which is lower than 0.95; no iterative algorithm is involved. The feasibility of the proposed scheme is demonstrated by computer simulation results.

Digital holography and its multidimensional imaging applications: a review

“…These waves were successfully and separately reconstructed and holographic reflection and transmission images were simultaneously visualized [ 115 ]. Multiplexed recording of multiple object waves were also applied to multiple 3D image encryption/decryption [ 116 ].…”

Single-shot phase-shifting incoherent digital holography

“…Most incoherent digital holography systems adopt temporal phase-shifting interferometry. Phase-shifting interferometry [21][22][23] can remove undesired diffraction images, zeroth-order diffraction waves, and conjugate images from an object wave, and has been applied not only to 3D image measurement but also to color imaging [24][25][26][27]. Parallel phase-shifting digital holography [28][29][30][31][32][33] is a single-shot phase-shifting technique using an in-line system, and single-shot incoherent 3D imaging is expected by the combination of incoherent digital holography.…”

Optical encryption of multiple three-dimensional objects based on multiple interferences and single-pixel digital holography

“…Recently, Li et al effectively solved the above two problems by proposing a three-step phase shifting method for the multiple-3D-object secure information system. [16,17] The huge storage required for storing and transmitting the ciphertext is another major issue. To the best of our knowledge, it has not been resolved.…”