title: Secure three-dimensional data transmission and display.
abstract: An optical three-dimensional (3D) display system interfaced with digital data transmission is proposed. In this system, an original 3D object is encrypted by use of a random phase mask and then the encrypted pattern is recorded as a digital hologram. The digital hologram key is also recorded for optical decryption. Both the encrypted digital hologram and the digital hologram key are transmitted to a receiver through a conventional communication data channel. At the receiver, the 3D scene is reconstructed and displayed optically in a retrieval system based on a joint-transform correlation. Experimental results are presented. We investigate the influence of quantization of the joint power spectrum in the optical correlator on the quality of the reconstructed image.
authors.affiliation: Department of Computer and Systems Engineering, Kobe University, Rokkodai 1-1, Nada, Kobe 657-8501, Japan. matoba@kobe-u.ac.jp
authors.forename: Osamu
authors.initials: O
authors.lastname: Matoba
authors.forename: Bahram
authors.initials: B
authors.lastname: Javidi
mesh_terms: D000465:Algorithms; D003195:Computer Communication Networks; D003196:Computer Graphics; D016494:Computer Security; D006696:Holography / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional; D016247:Information Storage and Retrieval / Q000379:methods*; D014584:User-Computer Interface