Authors:
Bara' Al-Mestarehi; Mohammed Obaidat;
Abstract:
Laser-scanning techniques present non-contact, flexible and accessible tools for digitizing shape and surface of many physical objects. The data obtained from these optical measurement systems is usually in the form of a point cloud (non-ordered set of XYZ coordinates). One of the most requested tasks is the conversion of point clouds into more practical triangular meshes containing useable information. A novel approach for wooden pattern modeling based on an improvement of alpha shape algorithm is proposed, where the data consists of points unevenly distributed in a volume rather than only on a surface. The developed model can record and detect efficiently the defects and the deformed breaks in the wooden structure. Accuracy indicators achieved
reached about 89% completeness, 95% correctness and 87% quality for the selected data. This form of threedimention (3D) geometry representation is anticipated to open the door for future data processing, visualization and monitoring for different engineering applications.
Keywords:
Laser scanning, Point cloud, Alpha shape, Modeling, Wooden pattern.