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Multispectral systems allow the spectral characterization of the scene through several acquisition channels with different
spectral features. The spectral sampling can be done by using transmittance filters and a white light source or illuminating the
scene using light sources with different spectral emission characteristics. Light-emitting diodes based light sources have
started to be used in multispectral systems, mainly to develop low-cost devices for the industry. In this study we analyze the
spectral power distribution and color variability of white and single color light-emitting diodes relative to the viewing angle, and highlight some aspects that must be taken into account if these light sources want to be used in a multispectral system.
CitationMartínez, Ó. [et al.]. Spectral variability of light-emitting diodes with angle. A: 5th European Conference on Colour in Graphics, Imaging, and vision. "Society for imaging Science and Technology". Joensuu: 2010, p. 547-553.
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