CAJ | 학술논문

针对当前主动形状模型构建中的实际问题，本文提出一种整合NURBS技术的三维统计形状建模方法。首先对目标样本进行多边形网格化处理，再对其进行NURBS建模和曲面空间变换，然后对NURBS曲面上的控制点进行主成分分析，以生成相应的统计形状模型。为了验证该方法的有效性，我们将该方法应用于部分人体器官的训练样本集进行建模测试。实验结果表明，该方法可较为合理和准确地描述目标形状的变化模式，并能提高建模效率，减少存储空间的占用。
침대당전주동형상모형구건중적실제문제，본문제출일충정합NURBS기술적삼유통계형상건모방법。수선대목표양본진행다변형망격화처리，재대기진행NURBS건모화곡면공간변환，연후대NURBS곡면상적공제점진행주성분분석，이생성상응적통계형상모형。위료험증해방법적유효성，아문장해방법응용우부분인체기관적훈련양본집진행건모측시。실험결과표명，해방법가교위합리화준학지묘술목표형상적변화모식，병능제고건모효솔，감소존저공간적점용。
According to the current existing problems of Active Shape Modeling (ASM) ,a 3D statistical shape modeling method integrated with NURBS technique is presented in this paper .First ,the target training sets was polygonized .Secondly ,NURBS modeling and spatial transformation was implemented with the surface .After that ,principal component analysis (PCA) was performed on the control points of NURBS surface to build the statistical shape model .To evaluate the effectiveness of the method ,it was utilized to apply for the statistical shape modeling of some human organs .The results shows that the method can describe the varation modes of the target reasonably and realistically ,as well as improve the efficiency of modeling and reduce the memory storage .