一种基于透视变换的车辆位置和方向提取方法

›› 2010, Vol. 23 ›› Issue (10): 101-103.

一种基于透视变换的车辆位置和方向提取方法

吴昆明,徐贵力

(南京航空航天大学自动化学院,江苏南京 210016)

出版日期:2010-10-15 发布日期:2010-12-31
作者简介:吴昆明(1985-),男,硕士研究生。研究方向:计算机视觉,图像处理。
基金资助:
航空基金资助项目(NO20060752006)

An Extraction Method of Vehicle's Position and Direction Based on Perspective Transformation

WU Kun-Ming, XU Gui-Li

(College of Automation Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China)

Online:2010-10-15 Published:2010-12-31

摘要/Abstract

摘要：

为了实现浓雾下高速公路的正常通行,提取了一种基于红外光穿浓雾能力比可见光强的特点,在道路两侧护栏上设置等间隔的红外诱导标志,利用车辆上的红外成像装置,获取车辆位置状态引导车辆正常行驶。利用快速标定模型进行了车载成像装置的标定,研究了基于导引标志的车辆位置和方向参数提取,其中改进了一种基于透视变换提取车辆位置方向的方法,即利用图像中车道平行线和灭影点的内在关系估计出车辆方向,并通过几何关系计算车辆位置。实验表明,该方法估计的车辆位置和方向参数达到车辆导引要求,是一种可行的方法。

关键词: 红外诱导系统, 透视变换, 车道平行线

Abstract:

In order to achieve normal operation of highway in fog,an method for guiding the vehicle in heavy fog with infrared thermal imager is proposed,which is based on the infrared light's higher ability of penetrating the heavy fog than visible light.Both sides of the road are paved with the infrared-induced signs,and vehicle location and direction are archived from the infrared-induced signs.First,the implicit model of camera calibration is used to calibrate the infrared thermal imager,and then an extraction method of the vehicle's position and direction based on infrared-induced signs is studied,which improves the vehicle's location and direction based on the perspective transformation,using the lane parallel lines and the shadow points to calculated the vehicle's position and direction.The result shows that the method is feasible.

Key words: IR-induced system;perspective transformation;lane parallel lines

中图分类号:

TP391.41

吴昆明, 徐贵力. 一种基于透视变换的车辆位置和方向提取方法[J]. , 2010, 23(10): 101-103.

WU Kun-Ming, XU Gui-Li. An Extraction Method of Vehicle's Position and Direction Based on Perspective Transformation[J]. , 2010, 23(10): 101-103.