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- W1987820654 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.© (1974) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only." @default.
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- W1987820654 date "1974-10-01" @default.
- W1987820654 modified "2023-09-23" @default.
- W1987820654 title "<title>On Optimal Holographic Filters</title>" @default.
- W1987820654 doi "https://doi.org/10.1117/12.953975" @default.
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