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APPROXIMATION OF VOLUME AND BRANCH SIZE DISTRIBUTION OF TREES FROM LASER SCANNER DATA

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Figure 1: Point clouds from a coniferous (left) and a deciduous tree (right).
Figure 3: Determination of connected components. An arbitrary ball (red) is chosen and it is expanded by an iterative process where overlapping balls are added to the existing ones.
Figure 4: A subset B (red circles) is elongated (left) and this is reflected in the eigenvalues (λ 1 , λ 2 , λ) and eigenvectors (u 1 , u 2 , u 3 ) of C(B) such that λ 1 >> λ 2 ≥ λ 3 holds and u 1
Figure 7: Classification of branch points.
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