Abstract
Recently, laser scanners have been receiving more attention as a useful tool for real-time 3D data acquisition, and various applications such as city modeling, DTM generation and 3D modeling of cultural heritage were proposed. However, 3D modeling using point cloud data are still issues. In particular, efficient extraction of interest points for generating TIN model should be resolved.
With this motive, efficient extraction of interest points in point crowd data and 3D modeling of historical structure are investigated in this paper. The method is based on surface flatness, and surface is classified into flat area (ground surface, wall of buildings, etc.) and non flat area (trees, bushes etc.) . Furthermore, break-line is detected as boundary between flat and non flat area, and each flat area is segmented using break-lines. The most remarkable point of this method is its ability to extract interest points for generating TIN model using 3D information for each point on the detected break line.
