17 May 2016 Compact multispectral multi-camera imaging system for small UAVs
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Cameras with filters in the focal plane provide the most compact solution for multispectral imaging. A small UAV can carry multiple such cameras, providing large area coverage rate at high spatial resolution. We investigate a camera concept where a patterned bandpass filter with six bands provides multiple interspersed recordings of all bands, enabling consistency checks for improved spectral integrity. A compact sensor payload has been built with multiple cameras and a data acquisition computer. Recorded imagery demonstrates the potential for large area coverage with good spectral integrity.
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Hans Erling Torkildsen, Trym Haavardsholm, Thomas Opsahl, Urmila Datta, Atle Skaugen, Torbjørn Skauli, "Compact multispectral multi-camera imaging system for small UAVs", Proc. SPIE 9840, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXII, 98401U (17 May 2016); doi: 10.1117/12.2224495; https://doi.org/10.1117/12.2224495

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