三维虚拟服装缝合技术研究

Simulation of 3-D Virtual Garment Stitching

讨论三维计算机辅助服装设计系统中二维衣片转换为三维服装的有关技术问题 .针对实现三维场景中服装的缝制及再现服装穿着的真实效果进行了深入研究 .对于二维服装衣片的离散问题 ,提出基于正则栅格法思想的四边域网格剖分算法 ,界定了对位缝合和褶皱缝合的新概念 ,通过相应的边界调整方案解决了复杂服装的缝制问题 ;在缝合模拟过程中 ,分析衣片缝合前后缝合力的作用 ,并给出不同阶段的约束处理方法 ;最后针对服装同人模之间的碰撞 ,提出一个基于层次剖分法、融合包围盒检测技术特点的碰撞检测加速算法 .这些技术均在三维虚拟服装缝制模拟系统中得以验证 .

Techniques for converting 2-D paper patterns into 3-D clothing are studied. A rectangular mesh generation algorithm is proposed to discretize the 2-D paper patterns. Two new concepts, namely direct stitching and crumpled stitching are defined. Two different edge adjustment schemes for different stitching models are given as well. Meanwhile, sewing force is applied as an additional constraint to control the stitching process. Finally, an advanced algorithm based on binary space partition and bounding box technique is presented to improve the efficiency of collision detection. All these methods are implemented and tested in the self-developed 3-D Virtual Garment Stitching System.