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24 May 2000 Three-dimensional image processing, recognition, and security
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Proceedings Volume 4089, Optics in Computing 2000; (2000)
Event: 2000 International Topical Meeting on Optics in Computing (OC2000), 2000, Quebec City, Canada
We present several methods for optoelectronic processing of 2- and 3-D images based in digital holography. 2D objects are optically encrypted by using on-axis digital holography. The digital hologram is obtained with phase-shifting interferometry. The encryption of the hologram is performed by using random phase codes. As conventional holograms, digital holograms contain information about shape, location and orientation of 3-D objects. This allows us to apply 3-D pattern recognition techniques with high discrimination. We also measure 3-D orientation changes using the information contained in digital holograms. Experimental results are presented.
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Bahram Javidi and Enrique Tajahuerce "Three-dimensional image processing, recognition, and security", Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000);

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