Journal article

A generalized approach to characterize optical properties of natural objects

L Ospina-Rozo, A Roberts, D Stuart-Fox

Biological Journal of the Linnean Society | Published : 2022

Abstract

To understand the diversity of ways in which natural materials interact with light, it is important to consider how their reflectance changes with the angle of illumination or viewing and to consider wavelengths beyond the visible. Efforts to characterize these optical properties, however, have been hampered by heterogeneity in measurement techniques, parameters and terminology. Here, we propose a standardized set of measurements, parameters and terminology to describe the optical properties of natural objects based on spectrometry, including angle-dependent effects, such as iridescence and specularity. We select a set of existing measurements and parameters that are generalizable to any wav..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

We are deeply grateful to the team in charge of the beetle division of the Australian National Insect Collection, especially to Bronte Sinclair, Debbie Jennings and Cate Lemann. We thank Adrian Dyer, Amanda Franklin, Jair Garcia, John Endler, Casper van de Kooi and anonymous reviewers for their insightful comments, which greatly improved the manuscript and accompanying code. This work was supported by funding from the Australian Research Council (DP190102203 and FT180100216). A.R. acknowledges funding through the Australian Research Council Centre of Excellence Scheme (CE200100010). We declare no conflicts of interest.