关键词: 三维网格模型分割, 基于勾画的交互方式, 边界顶点, 区域增长

Abstract: This paper presents a method for three-dimensional mesh surface models segmentation that combines interactive part selection with region growth.First，some mesh vertices are selected as object and background seeds using scribble-based selection methods，and the others are unknow region.Then，the mesh model can be automatically cut into two parts using region growth.The result is directly affected by the vertices on the part boundaries.As a result，the improved-methods set the vertices that are both adjacent to object and background as special vertices，and use cutting results as object and background seeds to do the region growth again.The experiments show that the result is more accurate because most vertices of the object and background are selected as seeds.

Key words: three-dimensional mesh segmentation, scribble-based interactive methods, boundaries, region growth