Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Selection of Optimal Vegetation Indices and Regression Model for Estimation of Rice Growth Using UAV Aerial Images

  • Lee, Kyung-Do (Department of Agricultural Environment, National Institute of Agricultural Sciences, RDA) ;
  • Park, Chan-Won (Department of Agricultural Environment, National Institute of Agricultural Sciences, RDA) ;
  • So, Kyu-Ho (Department of Agricultural Environment, National Institute of Agricultural Sciences, RDA) ;
  • Na, Sang-Il (Department of Agricultural Environment, National Institute of Agricultural Sciences, RDA)
  • Received : 2017.07.02
  • Accepted : 2017.11.04
  • Published : 2017.10.31
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Abstract

Recently Unmanned Aerial Vehicle (UAV) technology offers new opportunities for assessing crop growth condition using UAV imagery. The objective of this study was to select optimal vegetation indices and regression model for estimating of rice growth using UAV images. This study was conducted using a fixed-wing UAV (Model : Ebee) with Cannon S110 and Cannon IXUS camera during farming season in 2016 on the experiment field of National Institute of Crop Science. Before heading stage of rice, there were strong relationships between rice growth parameters (plant height, dry weight and LAI (Leaf Area Index)) and NDVI (Normalized Difference Vegetation Index) using natural exponential function ($R{\geq}0.97$). After heading stage, there were strong relationships between rice dry weight and NDVI, gNDVI (green NDVI), RVI (Ratio Vegetation Index), CI-G (Chlorophyll Index-Green) using quadratic function ($R{\leq}-0.98$). There were no apparent relationships between rice growth parameters and vegetation indices using only Red-Green-Blue band images.

Keywords

References

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