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针对缺损文物的修复问题,本文提出通过计算三角网格模型中的三维孔洞面积来统计缺损文物面积的算法:建立三角网格中的点、边和面之间的拓扑关系,根据网格边界性质提取网格模型中的边界边,将提取出的孔洞边界边顺序连接组成孔洞多边形,并利用三角网格拓扑属性来识别孔洞边界和模型本身的外边界,通过坐标法计算三维孔洞多边形面积来统计文物缺损面积。应用实例表明,此方法用于孔洞边界的提取和缺损文物面积的计算是有效、可行的。
In order to solve the problem of repairing the damaged artifacts, this paper proposes an algorithm to calculate the area of artifacts by calculating the three-dimensional hole area in the triangular mesh model: To establish the topological relationship between points, edges and surfaces in the triangular mesh, The boundary edges in the mesh model are extracted, and the extracted hole boundary edges are sequentially connected to form the hole polygons. The triangular mesh topological properties are used to identify the boundary of the hole and the outer boundary of the model itself, and the coordinate is used to calculate the area of the three-dimensional hole polygons Heritage defect area. The application examples show that this method is effective and feasible for extracting hole boundaries and calculating the area of missing artifacts.