Correlation-based optical reconstruction of a three-dimensional object for secure display

Osamu Matoba; Bahram Javidi

doi:10.1117/12.505386

23 October 2003 Correlation-based optical reconstruction of a three-dimensional object for secure display

Osamu Matoba, Bahram Javidi

Proceedings Volume 5202, Optical Information Systems; (2003) https://doi.org/10.1117/12.505386
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

The quality of the reconstructed three-dimensional (3D) object in a correlation-based optical reconstruction of three-dimensional object is numerically evaluated. An original 3D object is encrypted by using a random phase mask located in the Fourier plane, and then the encrypted pattern is recorded as an encrypted digital hologram together with a reference plane wave. The key digital hologram is also recorded as an interference pattern between the Fourier transformed pattern of the random phase mask and the reference wave. Both the encrypted digital hologram and the key digital hologram are transmitted to a receiver through a communication data channel. At the receiver, the 3D scene is reconstructed in a correlation-based retrieval system. For a real-time operation of the system, a key device is an optically-addressed spatial light modulator (OA-SLM) that records a joint power spectrum between the encrypted and the key holograms. We investigate the influence of quantization of joint power spectrum in an OA-SLM on the quality of the reconstructed image. Numerical and experimental results are presented.

Citation Download Citation

Osamu Matoba and Bahram Javidi "Correlation-based optical reconstruction of a three-dimensional object for secure display", Proc. SPIE 5202, Optical Information Systems, (23 October 2003); https://doi.org/10.1117/12.505386

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