摘要
对物体进行扫描时,获取的三角网格模型不可避免存在孔洞,导致重建后的网格模型无封闭性,或在孔洞处失去了物体原有的特征[1].为了恢复物体原有真实形状,从恢复尖锐特征的角度出发,提出一种特征增强的三维网格孔洞修补算法.首先,利用径向基函数获得近似逼近孔洞区域的光滑隐式曲面.然后,利用正则化匹配原则对隐式曲面进行三角网格划分,缝合孔洞填充区域与原始网格模型的孔洞边界.最后,对于孔洞区域中存在的尖锐特征区域加以特征增强处理.实验结果表明该算法效率高,并能有效的恢复孔洞区域原有的尖锐特征.
Aiming at the question that reconstructed 3D mesh model had hole,this paper proposed a new hole filling algorithm based on feature enhancement.First,a surface interpolation algorithm based on the radial basis function creates a smooth implicit.Then,a regularized marching tetrahedral algorithm is used to triangulate the implicit surface,and a repaired mesh model is obtained by stitching the hole patch and the hole boundary.Finally,a feature enhancement process is applied to the sharp feature area.Experimental results showed that we could get a better result of feature recovering effectively.
出处
《山东师范大学学报（自然科学版）》
CAS
2013年第4期45-48,共4页
Journal of Shandong Normal University(Natural Science)
关键词
三维网格模型
曲面拟合
特征增强
孔洞修补
3D mesh model
surface interpolation
feature enhancement
filling hole
