面向控制顶点优化的自由曲线交互拟合技术

摘要

To solve the defects of control vertices distribution which was one of the basic issues in CAD free curve fitting,a new interactive fitting technology of free curve fitting was presented.The density and distribution of the control vertices,which decided the shape of free curves,were planned manually with interactive processes,so that the quality of the control vertices distribution was guaranteed.The position of control vertices was adjusted automatically and iteratively to satisfy the approximation criteria.Applications show that both efficiency and quality of the fitting operation were satisfied very well.%针对现有CAD软件中全自动曲线拟合功能存在的控制顶点分布的缺陷,提出并实现了一种新的自由曲线交互拟合技术.通过人工交互手段保证了拟合曲线控制顶点的分布质量,并通过对控制顶点位置的全自动迭代调整,保证了拟合效率及精度,从而较好地满足了自由曲线拟合综合需求.