1 October 2004 Hybrid optical encryption of a 3-D object using a digital holographic technique
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Optical Engineering, 43(10), (2004). doi:10.1117/1.1789991
Abstract
An encryption method of a 3-D object based on the phase modulation of an object wave is proposed. The phase of the object wave is modulated by a virtual optical random phase mask using a digital holographic technique. The keys of an encryption step are both a phase distribution and a position of the virtual optical phase mask. If either of them is not correct, we cannot decrypt the 3-D object. Owing to a characteristic of a hologram, we can see some parallax of a reconstructed 3-D object. Experimental results are presented to confirm the proposed method.
Takanori Nomura, Kaoru Uota, Yoshiharu Morimoto, "Hybrid optical encryption of a 3-D object using a digital holographic technique," Optical Engineering 43(10), (1 October 2004). http://dx.doi.org/10.1117/1.1789991
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KEYWORDS
Digital holography

Holograms

Wavefronts

Charge-coupled devices

3D image processing

Hybrid optics

Holography

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