三维服装模型上的边界提取与编辑

Boundary extraction and editing on 3-D garment mesh models

领口、袖口、裤口等是三维服装模型上的重要部位,这些部位的提取、计算和编辑在三维服装合体性设计中有着重要的研究价值。首先对服装模型进行预处理如去除孤立三角片和孔洞修补,然后提取服装模型上边界点并使用三次非均匀B样条曲线拟合边界线,通过累加弦长参数法计算边界线的长度,最后采用平行切面投影边界点的方法适当增加空间数据点,用三角剖分得到延展的边界曲面。该方法可用于三维服装模型的局部调整和编辑。

Neckline, wristband and pantalets are key parts of 3-D garment models. The extraction and editing on these boundaries play an important role in the 3-D garment fitting design. The garment mesh model firstly is pretreated by removing isolated triangles and repairing the holes . After extracting border points, it uses the non-uniform cubic B-spline curve to interpolate them and calculates the length of each boundary. Finally, a parallel tangent plane based on border points is constructed to add new points and create the extended border surface by the triangulation process. This method can be applied for the local adjusting and editing of 3-D garment mesh models.