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- W2748477420 abstract "Holographic pattern recognition has been plague by too much sensitivity to such parameters as rotation and scale. We show here how to use that sensitivity to make rapid, accurate estimations of those parameters. For the particular case studied, we made signal-magnitude independent measurements of three rotation angles from -15° to +15° using three matched filters at -15°, 0°, and 15° multiplexed onto a single hologram. This lead to obtain a worst-case accuracy (standard deviation) of 1.0° for intermediate angles. The composite filter allows a search to be made electronically in the output plane, thus avoiding any moving parts, i.e., object or matched filter.© (1981) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only." @default.
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- W2748477420 date "1981-12-07" @default.
- W2748477420 modified "2023-09-23" @default.
- W2748477420 title "<title>Parameter Extraction By Holographic Filtering</title>" @default.
- W2748477420 doi "https://doi.org/10.1117/12.932805" @default.
- W2748477420 hasPublicationYear "1981" @default.
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