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http://dx.doi.org/10.14578/jkfs.2020.109.4.484

Development of a Tree Ring Measuring Program Using Smartphone-Captured Images  

Kim, Dong-Hyeon (Department of Ecology and Environment System, Kyungpook National University)
Kim, Tae-Lee (Department of Software, Kyungpook National University)
Cho, Hyung-Joo (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.109, no.4, 2020 , pp. 484-491 More about this Journal
Abstract
In this study, to solve the existing inefficient stem analysis process and expensive equipment cost problems, a method for detecting and analyzing tree rings using smartphone images was proposed and a semi-automated computer program (TRIO, Tree Ring Information) was developed. TRIO can measure the annual ring radius and save the results to Excel. Since TRIO uses smartphone images, the results may vary depending on the quality of the smartphone camera. Therefore, using the Samsung Galaxy S10 and Tap 2, 30 dics images of Pinus rigida were acquired and analyzed, and these were compared with WinDENDROTM. As a result of the study, both Samsung Galaxy S10 and S2 showed significant results with WinDENDROTM, and the R2 value of S10 had a high correlation as 0.976, and RMSE was analyzed as 0.4199, and very similar results were output. The R2 value of S2 was 0.975 and the RMSE was 0.4232, showing no significant difference from S10. Accordingly, the TRIO developed in this study analyzed the annual radius value very similar to WinDENDROTM.
Keywords
application; Pinus rigida; smartphone; tree ring; $WinDENDRO^{TM}$;
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Times Cited By KSCI : 5  (Citation Analysis)
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