关键词: 覆盖密度, 多层次单元划分, 曲面重建, 参数优化

Abstract: In order to improve the accuracy and the stability of surface reconstruction with the multi-level partition of unity, an algorithm of multi-level partition of unity implicits based on parameter optimization was proposed. Firstly, analyzed the factors which the radius coefficient α of bounding spheres and the minimum Nmin of the bounding spheres influencing surface reconstruction. And then, the Nmin was adjusted by the condition of approximation implicit function and the α was adjusted by the requests of coverage density in different models. Finally, the method of surface reconstruction was more stable can be achieved by optimal combination selection of Nmin and α.The experiments proved that the method proposed was more stable and accurate in different models.

Key words: coverage density, Multi-level Partition of Unity (MPU), surface reconstruction, parameter optimization