Estimation of tree parameters using data produced by mobile mapping system
2015
Čerňava Juraj
Nowadays the feasibility of mobile mapping systems is up to date subject. These systems produce various data types, but for measurements for the most of the application are used point clouds produced by mobile laser scanner. Application of such systems for acquiring the data for regular forest inventory could improve forest management. We very often interfere with incidental felling in regular operation, which can disorganize sustainable forest management. Highly automated mobile mapping systems can help update forest structure data after these unpredictable changes and support felling balance. Based on the mentioned facts the work focuses on processing the point clouds produced by mobile mapping system and testing the precision, which can this technology provide. On the territory of The University Forest Enterprise in the area of Včelien, which is species-rich and age-disparate, was carried out data collection by the mobile mapping system of company GEODIS Brno spol. s r.o. These data were processed into a form that allow measurements of tree diameter. Consequently, measured diameters were compared with diameter measured using conventional methods. RMSE value was 2,39 cm, which represents 8,03% of average tree diameter measured using conventional methods. The achieved result led to the artificial form factor of stem estimation experiment. Estimated tree parameters are critical for forest enterprises management and their automated derivation from spatial data has a potential to not just make work necessary for their collection easier but also make forest inventory more economical.
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