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http://dx.doi.org/10.22640/lxsiri.2020.50.1.201

A Study on the UAV-based Vegetable Index Comparison for Detection of Pine Wilt Disease Trees  

Jung, Yoon-Young (Department of Landscape Architecture, Wonkwang University)
Kim, Sang-Wook (Department of Landscape Architecture, Wonkwang University)
Publication Information
Journal of Cadastre & Land InformatiX / v.50, no.1, 2020 , pp. 201-214 More about this Journal
Abstract
This study aimed to early detect damaged trees by pine wilt disease using the vegetation indices of UAV images. The location data of 193 pine wilt disease trees were constructed through field surveys and vegetation index analyses of NDVI, GNDVI, NDRE and SAVI were performed using multi-spectral UAV images at the same time. K-Means algorithm was adopted to classify damaged trees and confusion matrix was used to compare and analyze the classification accuracy. The results of the study are summarized as follows. First, the overall accuracy of the classification was analyzed in order of NDVI (88.04%, Kappa coefficient 0.76) > GNDVI (86.01%, Kappa coefficient 0.72) > NDRE (77.35%, Kappa coefficient 0.55) > SAVI (76.84%, Kappa coefficient 0.54) and showed the highest accuracy of NDVI. Second, K-Means unsupervised classification method using NDVI or GNDVI is possible to some extent to find out the damaged trees. In particular, this technique is to help early detection of damaged trees due to its intensive operation, low user intervention and relatively simple analysis process. In the future, it is expected that the utilization of time series images or the application of deep learning techniques will increase the accuracy of classification.
Keywords
Pine Wilt Disease; UAV Imagery; Vegetation Index; K-Means; Confusion Matrix;
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Times Cited By KSCI : 8  (Citation Analysis)
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