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http://dx.doi.org/10.14578/jkfs.2021.110.1.72

Development of a Smartphone Application for the Measurement of Tree Height and Diameter at Breast Height  

Kim, Dong-Hyeon (Department of Ecology and Environment System, Kyungpook National University)
Kim, Sun-Jae (Department of Software, Kyungpook National University)
Sung, Eun-Ji (Department of Software, Kyungpook National University)
Kim, Dong-Geun (Department of Ecology and Environment System, Kyungpook National University)
Publication Information
Journal of Korean Society of Forest Science / v.110, no.1, 2021 , pp. 72-81 More about this Journal
Abstract
We developed smartphone application and web application server to acquire and effectively manage tree measurement information. Smartphone applications can measure tree height, diameter at breast height (DBH), azimuth, altitude, slope, and positional coordinates using augmented reality (Google AR core) and motion sensors. The web application server effectively manages and stores measurement information. To evaluate the accuracy of information acquired using a smartphone, 90 Korean pine trees (Pinus koraiensis) were randomly selected from a natural mixed forest, with a total of 90 representative trees randomly collected from a natural mixed forest. Then, height and DBH were measured using a Haglof Vertex Laser Hypsometer and caliper. Comparisons of the results indicated significant results at the 95% level and a very high average correlation of 0.972 for both tree height and DBH. In terms of DBH, the average errors were 0.6745 cm and 1.0139 cm for artificial coniferous and natural mixed forests, respectively.
Keywords
augmented reality; DBH; motion sensor; smartphone; tree height;
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