1 October 1974 On Optimal Holographic Filters
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Proceedings Volume 0045, Coherent Optics in Mapping; (1974) https://doi.org/10.1117/12.953975
Event: Coherent Optics in Modeling, 1974, Rochester, United States
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.
© (1974) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Gonsalves, R. Gonsalves, R. Dumais, R. Dumais, P. Considine, P. Considine, } "On Optimal Holographic Filters", Proc. SPIE 0045, Coherent Optics in Mapping, (1 October 1974); doi: 10.1117/12.953975; https://doi.org/10.1117/12.953975

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