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Sensors 2015, 15(6), 12834-12840; doi:10.3390/s150612834

Supplemental Blue LED Lighting Array to Improve the Signal Quality in Hyperspectral Imaging of Plants

1
Institute of Crop Science and Resource Conservation (INRES)-Phytomedicine, University of Bonn, Meckenheimer Allee 166a, 53115 Bonn, Germany
2
School of Electrical and Electronic Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, UK
3
Institute of Crop Science and Resource Conservation (INRES)-Plant Nutrition, University of Bonn, Karlrobert-Kreiten-Strasse 13, 53115 Bonn, Germany
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Hans Tømmervik
Received: 11 February 2015 / Accepted: 28 May 2015 / Published: 1 June 2015
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [1925 KB, uploaded 1 June 2015]   |  

Abstract

Hyperspectral imaging systems used in plant science or agriculture often have suboptimal signal-to-noise ratio in the blue region (400–500 nm) of the electromagnetic spectrum. Typically there are two principal reasons for this effect, the low sensitivity of the imaging sensor and the low amount of light available from the illuminating source. In plant science, the blue region contains relevant information about the physiology and the health status of a plant. We report on the improvement in sensitivity of a hyperspectral imaging system in the blue region of the spectrum by using supplemental illumination provided by an array of high brightness light emitting diodes (LEDs) with an emission peak at 470 nm. View Full-Text
Keywords: hyperspectral imaging; plant reflectance; blue LED array; signal-to-noise hyperspectral imaging; plant reflectance; blue LED array; signal-to-noise
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mahlein, A.-K.; Hammersley, S.; Oerke, E.-C.; Dehne, H.-W.; Goldbach, H.; Grieve, B. Supplemental Blue LED Lighting Array to Improve the Signal Quality in Hyperspectral Imaging of Plants. Sensors 2015, 15, 12834-12840.

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