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Proceedings Paper

Probing insect backscatter cross-section and melanization using kHz optical remote detection system
Author(s): Alem K. Gebru; Mikkel Brydegaard; Erich Rohwer; Pieter Neethling
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Paper Abstract

kHz optical remote sensing system is implemented to determine melanization and backscatter cross-section in the near infrared (NIR) and shortwave infrared (SWIR) in situ. It is shown that backscatter cross-section in the SWIR is insensitive to melanization and absolute melanization can be derived from the ratio of backscatter cross-section in two bands (SWIR/NIR). We have shown that insects reflect more strongly in the SWIR as compared to NIR and Visible (VIS) in accordance with previous findings. This is illustrated using three different insects (Snow white moth (spilosoma genus), Fox moth (Macrothylacia) and Leather beetle (Odontotaenius genus)) and it is shown that the reflectance of the Leather beetle in the VIS and NIR is more affected by melanization as compared with snow white moth.

Paper Details

Date Published: 19 September 2016
PDF: 17 pages
Proc. SPIE 9975, Remote Sensing and Modeling of Ecosystems for Sustainability XIII, 997504 (19 September 2016); doi: 10.1117/12.2236010
Show Author Affiliations
Alem K. Gebru, Lund Univ. (Sweden)
Stellenbosch Univ. (South Africa)
FaunaPhotonics IVS (Denmark)
Mikkel Brydegaard, Lund Univ. (Sweden)
Stellenbosch Univ. (South Africa)
FaunaPhotonics IVS (Denmark)
Erich Rohwer, Stellenbosch Univ. (South Africa)
Pieter Neethling, Stellenbosch Univ. (South Africa)


Published in SPIE Proceedings Vol. 9975:
Remote Sensing and Modeling of Ecosystems for Sustainability XIII
Wei Gao; Ni-Bin Chang, Editor(s)

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