On Optimal Holographic Filters

R. Gonsalves; R. Dumais; P. Considine

doi:10.1117/12.953975

1 October 1974 On Optimal Holographic Filters

R. Gonsalves, R. Dumais, P. Considine

Proceedings Volume 0045, Coherent Optics in Mapping; (1974) https://doi.org/10.1117/12.953975
Event: Coherent Optics in Modeling, 1974, Rochester, United States

Abstract

Vander Lugt (Ref. 1) introduced the use of holograms as frequency plane masks in spatial filtering applications. The technique produces the convolution of an input spatial scene s(x) with a convolving function a(x) by placing a hologram in the Fourier transform plane of a coherent optical processor. The hologram is a photograph of a reference beam and the Fourier trans form- H(f) of a spatial mask function h(x). The filtered scene is realized as an off-axis spatial signal. See Figure 1.

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R. Gonsalves, R. Dumais, and P. Considine "On Optimal Holographic Filters", Proc. SPIE 0045, Coherent Optics in Mapping, (1 October 1974); https://doi.org/10.1117/12.953975

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