摘要
为给后续曲面重构提供完整的数字化型面,必须对数字化过程中形成的孔洞进行修补。根据孔洞所在部位与周围曲面之间具有一定连续性的事实,提出了一种基于局部离散数据点的孔洞修补方法。即先根据孔洞周围的局部离散点来建立一张曲面片,然后采用面上取点的策略补出孔洞部位所缺的点。试验结果表明,用该方法修补后的点,不仅具有比较高的精度,而且与周围点之间具有良好的连续性,非常适合后续工作的需要。
In order to provide complete digital surface, it is necessary to repair the holes formed in its digitalization. Based on the fact that there is certain continuity between the holes and their surrounding surface, an approach to repair those holes is presented. That is to construct a local patch, from around points, in the position of the hole, and then to get points on the patch to fill the hole. Test results showed that the points repaired not only had higher accuracy, but also had good continuity with around points. So it can satisfy the need of succeeding surface reconstruction.
出处
《工程图学学报》
CSCD
2004年第4期85-89,共5页
Journal of Engineering Graphics
基金
甘肃省自然科学基金资助项目(ZS031-A25-008-Z)
兰州交通大学首批"青蓝"人才工程资助项目
关键词
计算机应用
孔洞修补
最小二乘
数据预处理
逆向工程
computer application
reparation of holes
least squares
reprocessing of data
reverse engineering
