Lynn J. Talkasen, Myeong Jun Kim, Dong Hyeon Kim, Dong Geun Kim, Kawn Hee Lee
언어
영어(ENG)
URL
https://www.earticle.net/Article/A308397
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초록
영어
The use of unmanned aerial vehicles (UAV) for the estimation of tree height is gaining recognition. This study aims to assess the effectiveness of tree height estimation of Pinus densiflora Sieb. et Zucc. and Pinus koraiensis Sieb. et Zucc. using digital surface model (DSM) generated from UAV-acquired imageries. Images were taken with the TrimbleⓇ UX5 equipped with Sony 5100. The generated DSM, together with the digital elevation model (DEM) generated from a digital map of the study areas, were used in the estimation of tree height. Field measurements were conducted in order to generate a regression model and carry out accuracy assessment. The obtained coefficients of determination (R2) and root mean square error (RMSE) for P. densiflora (R2=0.71; RMSE=1.00 m) and P. koraiensis (R2=0.64; RMSE=0.85 m) are comparable to the results of similar studies. The results of the paired two-tailed t-test show that the two tree height estimation methods are not significantly different (p-value=0.04 and 0.10, alpha level=0.01), which means that tree height estimation using UAV imagery could be used as an alternative to field measurement.
목차
Abstract Introduction Materials and Methods Study sites Tree height estimation using UAV imagery Tree height validation and reliability assessment Results and Discussion Image acquisition, ortho-mosaic image production,and DSM generation Tree height estimation Tree height validation and accuracy assessment Conclusion and Recommendations Acknowledgements References
키워드
unmanned aerial vehicle (UAV)digital surface model (DSM)height estimationPinus densifloraPinus koraiensis
저자
Lynn J. Talkasen [ Department of Agroforestry, College of Agriculture, Benguet State University, La Trinidad 2601 Benguet, Philippines ]
Myeong Jun Kim [ Forest Environment and Geospatial Technology Research Institute, Daejeon 34070, Republic of Korea ]
Dong Hyeon Kim [ Department of Ecology and Environmental Systems, Kyungpook National University, Sangju 37224, Republic of Korea ]
Dong Geun Kim [ Department of Ecology and Environmental Systems, Kyungpook National University, Sangju 37224, Republic of Korea ]
Corresponding author
Kawn Hee Lee [ Department of Forestry, Kyungpook National University, Daegu 41566, Republic of Korea ]