东南大学学报（自然科学版）2016，Vol.46Issue(6)：1161-1164,4.DOI:10.3969/j.issn.1001-0505.2016.06.009
一种基于端点非插值性的NURB S曲面重构方法
A reconstruction method for NURBS surface by curve unclamping
摘要
Abstract
To solve the poor continuity and extension of surface with multipatch splicing and dress up features,a non-uniform rational B-spline (NURBS ) surface reconstruction method based on the unclamping was proposed.First,the original surface was discretized into point-cloud according to the different locations and curvatures,the knot vectors of each sampling path were calculated based on discreted points.Then,the unclamping common knot vector and the control net required for sur-face-reconstruction were calculated,and the unclamping common vector needed to be changed into the clamping common vector.Based on the latest clamping vector,new data points were inserted in-to the rectangle without data.Finally,all data points were fitted to a single surface.The reconstruc-tion results show that the amount of calculation is reduced and the reconstructed surface has high ac-curacy.It can guarantee the fitting ratio and the continuity of curvature where the curvature has sharp change.During modeling,the proposed method reconstructs the original surface to a single surface, improves the precision of the surface reconstruction and solves problems,such as surface degradation and surface distortion.关键词
非均匀有理B样条/曲面离散/曲面重构/端点非插值性Key words
non-uniform rational B-spline/surface discretization/surface reconstruction/curve unclamping分类
信息技术与安全科学引用本文复制引用
张国军,幸研..一种基于端点非插值性的NURB S曲面重构方法[J].东南大学学报（自然科学版）,2016,46(6):1161-1164,4.基金项目
“十二五”某部先进制造技术预先研究资助项目（51318010102）、江苏省前瞻性联合研究资助项目（BY2015070-06）． （）
