Multichannel disk-based optical correlator
Angularly multiplexed transmission holograms were recorded at multiple spots on a photopolymer coated disk. By imaging in the `along track' direction and Fourier transforming in the radial direction when recording and presenting images, disk rotation can be used to generate the 2D correlation functions between stored templates and presented images. The correlation functions for holograms multiplexed at a given spot are generated line by line and detected in parallel. A theoretical model of operation was developed and experimentally verified.
Additional Information© 1993 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors gratefully acknowledge Northrop's support for this work. Kevin Curtis acknowledges the Northrop Fellowship for supporting his Ph.D. studies at the California Institute of Technology. The photopolymer was graciously made available to us by DuPont; in particular, the authors wish to thank Jay Calio of DuPont. In addition, we appreciate the many helpful discussions with Sidney Li.
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