On the Way to Water-tight Mesh
Rui Liu, Darius Burschka, Gerd Hirzinger · elib (German Aerospace Center) · 2007
Figure 1. Comparison between different methods for water-tight mesh generation This paper presents a new approach to generate water-tight surface mesh. In comparison with the two famous water-tight mesh generation algorithms: Tight Cocone (Dey and Goswami, 2003) and Power Crust (Amenta, Choi and Kolluri, 2001), our method shows a significant quality on the resulted models due to the efficient pre- and post- processing. We choose our previously published online mesh generation method, for it reduces the very large point-clouds very fast and effective, which is suitable for our applications: reconstruction of historical buildings and online digitalisation of small scale objects. To optimisation the resulted mesh, we apply a fast and automatic pre- and post-processing to fill the holes effectively. It consists of six steps: mesh segmentation, filtering of noise, hole detection, filling of holes, triangles subdivision and surface smoothing. The whole process is integrated in one and is performed fully automatically. Validation of our method is based on the digitalisation of small objects with a hand-guided multi-sensory device and 3D-reconstruction of cultural heritage. 1.