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Proceedings Paper

Fusion of spectral and directional reflectance information
Author(s): Marcos López Martínez
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Paper Abstract

The measurement of the bidirectional reflectance distribution function (BRDF) is difficult due to the high dimensionality and complexity. The quantification of this function requires costly facilities, named gonioreflectometers, and long measurement times due to the great number of possible combinations between incoming and outgoing directions and additionally wavelengths.

We introduce a method for fusing directional information acquired from two different detectors, a spectrometer and a photodiode. The goal is to combine the strength of each one for a specific dimension of the BRDF without drastically extending the acquisition times. For that purpose the spectrometer delivers the spectral information and the photodiode highly directional monochromatic information of the reflectance function. This method is applied to a coated metal sheet in the visual and near infrared spectral regions, where monochromatic measurements are combined with spectral ones to get higher information densities.

Paper Details

Date Published: 17 October 2019
PDF: 12 pages
Proc. SPIE 11158, Target and Background Signatures V, 111580H (17 October 2019); doi: 10.1117/12.2532821
Show Author Affiliations
Marcos López Martínez, Fraunhofer Institute of Optronics, System Technologies and Image Exploitation (Germany)

Published in SPIE Proceedings Vol. 11158:
Target and Background Signatures V
Karin U. Stein; Ric Schleijpen, Editor(s)

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