Journal
REMOTE SENSING
Volume 11, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/rs11101242
Keywords
Olea europaea L; canopy; precision agriculture; unmanned aerial vehicle (UAV); vegetation indices (VIs); cultivar recognition
Categories
Funding
- ESF [2014.IT.05.SFOP.014/3/10.4/9.2.10/0007]
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The application of spectral sensors mounted on unmanned aerial vehicles (UAVs) assures high spatial and temporal resolutions. This research focused on canopy reflectance for cultivar recognition in an olive grove. The ability in cultivar recognition of 14 vegetation indices (VIs) calculated from reflectance patterns (green(520-600), red(630-690) and near-infrared(760-900) bands) and an image segmentation process was evaluated on an open-field olive grove with 10 different scion/rootstock combinations (two scions by five rootstocks). Univariate (ANOVA) and multivariate (principal components analysis-PCA and linear discriminant analysis-LDA) statistical approaches were applied. The efficacy of VIs in scion recognition emerged clearly from all the approaches applied, whereas discrimination between rootstocks appeared unclear. The results of LDA ascertained the efficacy of VI application to discriminate between scions with an accuracy of 90.9%, whereas recognition of rootstocks failed in more than 68.2% of cases.
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