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