5 October 2017 Angular dependance of spectral reflection for different materials
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Parameters like the sun angle as well as the measurement angle mostly are not taken into account when simulating because their influence on the reflectivity is weak. Therefore the impact of a changing measurement and illumination angle on the reflectivity is investigated. Furthermore the impact of humidity and chlorophyll in the scenery is studied by analyzing reflectance spectra of different vegetative background areas. It is shown that the measurement as well as the illumination angle has an important influence on the absolute reflection values which raises the importance of measurements of the bidirectional reflectance distribution function (BRDF).
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Pascal M. Kiefer, Pascal M. Kiefer, Max Winkelmann, Max Winkelmann, } "Angular dependance of spectral reflection for different materials", Proc. SPIE 10432, Target and Background Signatures III, 1043203 (5 October 2017); doi: 10.1117/12.2278281; https://doi.org/10.1117/12.2278281

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