Optical calculation of correlation filters

Jerome Knopp; Stanley E. Monroe Jr.

doi:10.1117/12.21225

1 September 1990 Optical calculation of correlation filters

Jerome Knopp, Stanley E. Monroe Jr.

Proceedings Volume 1295, Real-Time Image Processing II; (1990) https://doi.org/10.1117/12.21225
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

A method is presented for designing optical correlation filters based on measuring intensity patterns in the Fourier plane. The method can be used in general to design any type of frequency plane filter but is especially attractive in the case of a binary phase only filter (BPOF). The method can produce a filter that is well matched to both the object, its transforming optical system and the spatial light modulator used in the correlator input plane. A working filter was produced using the technique, but the filter response was weak. The suspected causes of the weak output are imprecise Fourier plane positioning, nonlinearities in the recording process, and/or aliasing effects.

Citation Download Citation

Jerome Knopp and Stanley E. Monroe Jr. "Optical calculation of correlation filters", Proc. SPIE 1295, Real-Time Image Processing II, (1 September 1990); https://doi.org/10.1117/12.21225

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