CAJ | 학술논문

针对常用的空洞修补方法在修复具有多种曲面类型的空洞时失效和所修复的曲面不光顺等缺点，提出基于特征数据分块自适应切片的空洞修补。首先，在考虑特征信息的情况下基于聚类对散乱点云进行分块；然后利用特征进行自适应切片，获得曲线并进行拟合；最后，在线上取点填充缺失的点云，最终对完整的点云模型进行曲面重构建立实体模型。试验结果表明，采用自适应切片法修补空洞能够保留特征，所填充的点云数据精度较高，能够满足后续建模的需要。此外对该方法填充的点云进行了曲面重构及光顺，结果令人满意。
침대상용적공동수보방법재수복구유다충곡면류형적공동시실효화소수복적곡면불광순등결점，제출기우특정수거분괴자괄응절편적공동수보。수선，재고필특정신식적정황하기우취류대산란점운진행분괴；연후이용특정진행자괄응절편，획득곡선병진행의합；최후，재선상취점전충결실적점운，최종대완정적점운모형진행곡면중구건립실체모형。시험결과표명，채용자괄응절편법수보공동능구보류특정，소전충적점운수거정도교고，능구만족후속건모적수요。차외대해방법전충적점운진행료곡면중구급광순，결과령인만의。
Since common hole patching methods have some shortcomings, such as failure in repairing a variety of surfaces or repaired surfaces being not smooth, a new hole patching method is presented which uses adaptive slic-ing based on the feature data segmentation. Firstly, scattered point cloud is segmented based on cluster under the consideration of feature information;then adaptive slicing generates curves to be fitted with the features. Finally, virtual points are chosen from the curves to fill the missing parts of the point cloud. The surface of the complete point cloud is reconstructed to establish a physical model. Test results show that the adaptive slicing method can keep patching hole feature and have high accuracy of filled point cloud, which can meet the needs of the subse-quent modeling. In addition, the results of surface reconstruction and smoothing obtained are satisfactory.