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    • Center for Photonics Technology
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    Optical Image Recognition Of Three-Dimensional Objects

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    Downloads: 537
    Date
    1999-09-01
    Author
    Poon, Ting-Chung
    Kim, Taegeun
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    Abstract
    A three-dimensional (3-D) optical image-recognition technique is proposed and studied. The proposed technique is based on two-pupil optical heterodyne scanning and is capable of performing 3-D image recognition. A hologram of the 3-D reference object is first created and then is used to modulate spatially one of the pupils of the optical system; the other pupil is a point source. A 3-D target object to be recognized is then scanned in two dimensions by optical beams modulated by the two pupils. The result of the two-dimensional scan pattern effectively displays the correlation of the holographic information of the 3-D reference object and that of the 3-D target object. A strong correlation peak results if the two pieces of the holographic information are matched. We analyze the proposed technique and thereby lay a theoretical foundation for optical implementations of the idea. Finally, computer simulations are performed to verify the proposed idea. (C) 1999 Optical Society of America.
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    http://hdl.handle.net/10919/46945
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    • Faculty Works, Center for Photonics Technology [24]

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