The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLII-3/W3
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W3, 27–31, 2017
https://doi.org/10.5194/isprs-archives-XLII-3-W3-27-2017
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W3, 27–31, 2017
https://doi.org/10.5194/isprs-archives-XLII-3-W3-27-2017

  19 Oct 2017

19 Oct 2017

FOREST RESOURCE MEASUREMENTS BY COMBINATION OF TERRESTRIAL LASER SCANNING AND DRONE USE

K. Cheung1, M. Katoh1, and M. Horisawa2 K. Cheung et al.
  • 1Institute of Mountain Science, Shinshu University, 8304, Minamiminowa-Vill. Kamiina-County, Nagano, 399-4598, Japan
  • 2Kita-Shinshu forest owners' cooperative, 938-1 Kabeta, Nakano, Nagano, 399-4598, Japan

Keywords: Terrestrial Laser Scanning, Drone, Airborne Laser Scanning, Stand Level, Individual Level, 100 % Tree Detection Rate

Abstract. Using terrestrial laser scanning (TLS), forest attributes such as diameter at breast height (DBH) and tree location can be measured accurately. However, due to low penetration of laser pulses to tree tops, tree height measurements are typically underestimated. In this study, data acquired by TLS and drones were combined; DBH and tree locations were determined by TLS, and tree heights were measured by drone use. The average tree height error and root mean square error (RMSE) of tree height were 0.8 and 1.2 m, respectively, for the combined method, and –0.4 and 1.7 m using TLS alone. The tree height difference was compared using airborne laser scanning (ALS). Furthermore, a method to acquire 100 % tree detection rate based on TLS data is suggested in this study.