基于孔洞区域特征分割的复杂孔洞修复方法

Complex Hole Repair Method Based on Hole Region Feature Segmentation

针对三角网格模型中曲率变化剧烈,跨多个特征面的复杂孔洞,提出一种基于脊线拟合的孔洞分割方法。首先检测孔洞边界上的曲率突变点,识别孔洞周边区域的特征线,再将特征线进行配对,进而拟合出孔洞区域的分割线,将分割线离散化为由顶点链组成的多段线,与分段的孔洞边界连接成简单孔洞,最后采用简单孔洞修补算法完成修补。实验结果表明,该方法对曲率变化剧烈的孔洞修补效果良好,能较好的保持原模型的细节特征。

Aiming at complex holes with sharp curvature changes in the triangular mesh model and across multiple feature surfaces,a hole segmentation method based on ridge fitting is proposed.First,detect the abrupt curvature points on the boundary of the hole,identify the characteristic lines in the surrounding area of the hole,and then match the characteristic lines to fit the dividing line of the hole area,and discretize the dividing line into a polyline composed of vertex chain The segmented hole boundaries are connected into simple holes,and finally a simple hole repair algorithm is used to complete the repair.The experimental results show that the method is effective in repairing holes with sharp curvature changes,and can maintain the details of the original model.