Estimating Biomass and Nitrogen Amount of Barley and Grass Using UAV and Aircraft Based Spectral and Photogrammetric 3D Features - Näsi, Roope; Viljanen, Niko; Kaivosoja, Jere; Alhonoja, Katja; Hakala, Teemu; Markelin, Lauri; Honkavaara, Eija (MDPI, 2018)
Keywords: hyperspectral; UAV; drone; random forest; regression; biomassa; typpi; photogrammetry; machine learning; precision agriculture; biomass; nitrogen; fotogrammetria