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Comprehensive approach for building outline extraction from LiDAR data with accent to a sparse laser scanning point cloud

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Figure

Figure 1: Subsets of point clouds from the test sites (a) Ctiněves and (b) Polabiny. For the purpose of visualization the point clouds were automatically classified in SCOP++ (dark green – ground, light green – vegetation, red – roofs, white – not classifi
Figure 2: General workflow of the proposed building (roof) outline extraction algorithm.
Figure 3: Local plane fitting and refinement: (a) 2D section of an original point cloud with an evaluated point in green, (b) selected point surroundings, (c) fitting plane after using the RANSAC algorithm with a distance threshold, (d) final plane refined
Figure 5: Outline extraction and regularization. (a) Outline of a reference building (red poly- poly-gon) derived by manual editing
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