广东工业大学学报Issue(3)：119-122,4.DOI:10.3969/j.issn.1007-7162.2015.03.022
基于两控制点的 Dr．Bridge 抛物线拟合方向辨识
Identification of Parabola Fitting Direction by Two Controlling Points of Dr.Bridge
摘要
Abstract
A new method is presented to determine the fitting direction while using Dr.Bridge′s linear ed-itor to model various parabolas in this paper.By considering convex-concave property at monotone inter-val of a quadratic curve, four different parabola shapes with two controlling points fitted, are provided. Based on the method, two sets of symbols are introduced to describe the monotonicity and convex-concave property of parabola.And the identification of parabola fitting direction is presented, which explores a new way to fit a parabola by two controlling points when linear editor of Dr.Bridge is used.The presented method is suitable for determining the parabola fitting direction whether parabola is fitted by two or by three controlling points.The method is illustrated by its simplicity and convenience, and efficient for pro-gram realization, which greatly promotes the modeling efficiency.关键词
抛物线拟合/控制点/单调性/凸凹性/直线编辑器Key words
parabola fitting/controlling point/monotonicity/convex-concave property/linear editor分类
交通工程引用本文复制引用
黄娟,丁术鲜,陈光明,甘鸿光..基于两控制点的 Dr．Bridge 抛物线拟合方向辨识[J].广东工业大学学报,2015,(3):119-122,4.基金项目
国家自然科学基金资助项目（5378130）；广东工业大学教育教学改革工程项目 （）
