LiDAR method, whose energy is light or laser, is a measurement technique that quickly measures dense spatial data. This technique is widely used in forest areas and has an intensive data processing step. Classification comes first in the mentioned processes. Accurate detection of tree stem is an important issue in predicting tree parameters. This study was conducted to evaluate the performance of the methods used in the classification and extraction of tree stem using point clouds measured by hand-held mobile LiDAR system (HMLS). To identify the stems from the HMLS point cloud on a single-tree basis, statistical classification techniques, like logistic regression, linear discriminant analysis, random forest and support vector machine, were used. Only the points representing tree stems were classified by separating them from other parts of the trees, such as branches and leaves. It was determined that the best method was a random forest classifier based on overall accuracy results. In terms of data processing performance, a linear discriminant analysis performed better than the other methods.
Primary Language | Turkish |
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Subjects | Forest Industry Engineering |
Journal Section | Research Article |
Authors | |
Publication Date | September 15, 2020 |
Acceptance Date | May 6, 2020 |
Published in Issue | Year 2020 Volume: 21 Issue: 2 |