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Using Optical Space-Frequency Analysis for Real-Time Pattern Recognition
December 1994 (vol. 14 no. 6)
pp. 49-60

Simple, economical hardware based on incoherent space-frequency analysis overcomes many drawbacks associated with coherent optical systems. We have adopted this technique in developing a compact camera unit that uses a liquid-crystal light modulator for data input. This optically addressable camera system can automate a variety of visual inspection tasks. Adapted to conventional microscopes, it also enables automatic inspection of biological specimen textures, a useful tool in disease detection.

Citation:
Frank Reichel, Wolfgang Loeffler, Ernst Gaertner, "Using Optical Space-Frequency Analysis for Real-Time Pattern Recognition," IEEE Micro, vol. 14, no. 6, pp. 49-60, Dec. 1994, doi:10.1109/40.331389
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