摘要
根据人台每层截面上纬向线是封闭曲线的特点,将曲线的直角坐标函数关系的转换为极坐标函数关系,进行三次样条插值计算,再转换为x、y、z值,其方法简单,计算量小,但拟合的人台肩颈部变形失真较大。分析了造成上述问题的曲线大挠度原因后,运用参数三次样条插值方法,采用累加玄长为参数,分别对人台经纬曲线的x、y、z进行插值计算,并拟合人台曲面。通过OpenGL模拟仿真表明,参数三次样条插值方法能够解决服装人台肩颈部的变形失真问题,使人台更具真实感,非常适合服装人台模型仿真。
According to the characteristics of the closed curve on every section of mannequin, the rectangular coordinates function was converted to the polar coordinates function, cubic spline interpolation conducted, and x, y, z value were converted later again. This method is simple, with less calculation. But fitting model of the shoulder and neck deformated greatly. After analyzing of the reason of large deformation, the parametric cubic spline interpolation method was used for x, y, z respectively on Warps and wefts with accumulative bowstring length as parameter to fit the surface of mannequin. Simulation with OpenGL shows that parametric cubic spline interpolation method can solve the problem of eshoulder and neck deformation, make the mannequin more realistic, and the method is suitable for mannequin model simulation.
出处
《计算机应用》
CSCD
北大核心
2008年第8期2153-2155,共3页
journal of Computer Applications
基金
四川省教育厅自然科学重点项目(2004A167)
关键词
人台模型
三次样务
累加玄长
OPENGL
model of mannequin
cubic spline
accumulative bowstring length
OpenGL
作者简介
夏平（1965-），男，四川成都人，副教授，博士研究生，主要研究方向：计算机辅助设计与制造； xiahuangpp@ 163. com
姚进（1958-），男，四川犍为人，教授，博士生导师，主要研究方向：机器人与机构学、企业信息化、机电一体化、CAD／CAE／CAM。
