Reference : Selection of the most efficient wavelength bands for discriminating weeds from crop
Scientific journals : Article
Life sciences : Agriculture & agronomy
Engineering, computing & technology : Computer science
http://hdl.handle.net/2268/18162
Selection of the most efficient wavelength bands for discriminating weeds from crop
English
Piron, Alexis mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Leemans, Vincent mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Kleynen, O. [Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > > > > Mécanique et Construction > >]
Lebeau, Frédéric mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Destain, Marie-France mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
2008
Computers & Electronics in Agriculture
Elsevier Science
62
2
141-148
Yes (verified by ORBi)
International
0168-1699
[en] multispectral imaging ; wavelength selection ; weeds ; crop
[en] The aim of this study was to select the best combination of filters for detecting various weed species located within carrot rows. In-field images were taken under artificial lighting with a multispectral device consisting of a black and white camera coupled with a rotating wheel holding 22 interference filters in the VIS-NIR domain. Measurements were performed over a period of 19 days, starting 1 week after crop emergence (early weeding can increase yields) and seven different weeds species were considered. The selection of the best filter combination was based on a quadratic discriminant analysis. The best combination of filters included three interference filters, respectively centred on 450, 550 and 700 nm. With this combination, the overall classification accuracy (CA) was 72%. When using only two filters, a slight degradation of the CA was noticed. When the classification results were reported on field images, a systematic misclassification of carrot cotyledons appears. Better results were obtained with a more advanced growth stage. (c) 2007 Elsevier B.V. All rights reserved.
http://hdl.handle.net/2268/18162
10.1016/j.compag.2007.12.007
http://reflexions.ulg.ac.be/RobotChamps

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
SMEWLB4DWC2.pdfAuthor postprint503.86 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.