基于CatMull-Rom曲线的道路透视车道线控制点规律分析  

Analysis of Control Points’Regularity of Road Perspective Lane Based on the Cat MuII-Rom Spline

作　　者：王瑞云[1,2] 陈雨人[1,2] 贺思虹[1,2] 董永杰[1,2] 

机构地区：[1]同济大学交通运输工程学院,上海201804 [2]道路交通安全与环境教育部工程研究中心,上海201804

出　　处：《上海公路》2014年第3期33-36,58,共5页Shanghai Highways

基　　金：国家自然科学基金(51078270,51238008);高等学校博士学科点专项科研基金(20120072110019)

摘　　要：驾驶人直观地从道路透视图中获取线形信息,采用CatMull-Rom样条曲线表征驾驶人通过视觉获得的车道线形,确定控制点位,从中提取特征点表征车道控制点分布。通过对两侧车道线特征点位置分析,分别得到不同平曲率和纵坡条件下,车道线特征点横、纵向分布规律。研究成果可川于道路平纵线形与透视车道线之间的定量关系分析,进而也可为从驾驶人视觉角度评价线形设计质量提供参考。Road alignment information can be obtained from road perspective intuitively.CatMull-Rom spline is used to represent visual lane alignment,then the control points can be determined and feature points can be extracted to represent the distribution of the road control points.Analyzed the position of feature points,the horizontal and vertical distributive regularity of feature points under different curvatures and longitudinal slopes are gained,respectively.The research result can be used to quantify the relationship between road horizontal-vertical alignment and perspective lane,and thus also provide a reference for the evaluation of lane design quality from the drivers' visual angle.

关 键 词：CatMull—Rom曲线 透视车道线 控制点 平曲率 纵坡 

分 类 号：U412.3[交通运输工程—道路与铁道工程]