CAJ | 학술논문

提出了一种面向截面测量数据的 B 样条曲面拟合算法。首先对原始数据点列进行降噪处理，然后遴选出曲率优势点，并将其作为初始的轮廓约束点，得到插值于约束点的初始曲线。再在需改善拟合精度的区域增加约束点，直至获得满足精度要求的 B 样条曲线。最后以约束点数目最多的曲线为准，在其余的曲线上增加差额数目的约束点，并进行平均弦长参数化，构造出 B 样条曲线簇，最终获得 B 样条拟合曲面。仿真实验结果表明，该方法可显著压缩曲面模型的控制顶点数目，具有较高的曲面重构效率。
제출료일충면향절면측량수거적 B 양조곡면의합산법。수선대원시수거점렬진행강조처리，연후린선출곡솔우세점，병장기작위초시적륜곽약속점，득도삽치우약속점적초시곡선。재재수개선의합정도적구역증가약속점，직지획득만족정도요구적 B 양조곡선。최후이약속점수목최다적곡선위준，재기여적곡선상증가차액수목적약속점，병진행평균현장삼수화，구조출 B 양조곡선족，최종획득 B 양조의합곡면。방진실험결과표명，해방법가현저압축곡면모형적공제정점수목，구유교고적곡면중구효솔。
Aiming at cross??sectional measured data,a B??spline surface fitting method was proG posed.The original data points were denoised firstly,then vantage points of curvature were picked out and taken as the initial contour constraint points,and an initial curve interpolated with the constraint points was gained.After that,constraint points were added to the region whose fitting accuracy neeG ded to be improved,until the B??spline curve could reach preset accuracy.Finally,subjecting to curve which contained the most constraint points,constraint points of the balance number were added to the rest of the curve,and average chord??length parameterization was conducted to construct a family of B??spline curves,and a B??spline fitting surface was obtained at last.Simulation results show that,this method can compress the number of control vertices of the surface model significantly with a high effiG ciency of surface reconstruction.