title: Supplemental blue LED lighting array to improve the signal quality in hyperspectral imaging of plants.
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.
authors.affiliation: Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No.1, Roosevelt Road, Sec.4, Taipei 10617, Taiwan. amahlein@uni-bonn.de.
authors.forename: Anne-Katrin
authors.initials: AK
authors.lastname: Mahlein
authors.affiliation: Institute of Crop Science and Resource Conservation (INRES)-Phytomedicine, University of Bonn, Meckenheimer Allee 166a, 53115 Bonn, Germany. simon.hammersley@manchester.ac.uk.
authors.forename: Simon
authors.initials: S
authors.lastname: Hammersley
authors.affiliation: Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No.1, Roosevelt Road, Sec.4, Taipei 10617, Taiwan. ec-oerke@uni-bonn.de.
authors.forename: Erich-Christian
authors.initials: EC
authors.lastname: Oerke
authors.affiliation: Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No.1, Roosevelt Road, Sec.4, Taipei 10617, Taiwan. hw-dehne@uni-bonn.de.
authors.forename: Heinz-Wilhelm
authors.initials: HW
authors.lastname: Dehne
authors.affiliation: School of Electrical and Electronic Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, UK. h.goldbach@uni-bonn.de.
authors.forename: Heiner
authors.initials: H
authors.lastname: Goldbach
authors.affiliation: Institute of Crop Science and Resource Conservation (INRES)-Phytomedicine, University of Bonn, Meckenheimer Allee 166a, 53115 Bonn, Germany. bruce.grieve@manchester.ac.uk.
authors.forename: Bruce
authors.initials: B
authors.lastname: Grieve
mesh_terms: D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008029:Lighting / Q000295:instrumentation*; D010935:Plant Diseases; D010944:Plants / Q000737:chemistry* / Q000378:metabolism*; D059629:Signal-To-Noise Ratio
keywords: blue LED array; hyperspectral imaging; plant reflectance; signal-to-noise