摘要
针对国标中规定的轴距差检测要求,提出了基于立体视觉的轴距左右差检测新方法。建立了轴距差检测数学模型。根据图像处理技术,确定了车轮图像中心坐标的识别方案。建立了轴距左右差检测的实验系统,标定了双摄像机的内外参数,并对检测系统进行了系统误差分析。建立了车轮坐标三维重建理论模型,论述了轮毂中心坐标的计算过程。应用实验系统进行实车检测,结果表明,本文建立的理论模型正确,实验系统具有很高的检测精度。
A new vehicle wheelbase difference detection method was proposed based on the stereovision theory to meet the wheelbase difference detection requirements stipulated by the national standard.A mathematical model was built for the wheelbase difference detection.An identification scheme of the coordinates of the wheel image center was defined on the basis of image processing technology.An experimental system was established to detect the wheelbase difference,the intrinsic and extrinsic parameters of the dual-camera were calibrated and the systematic errors of the detection system were analyzed.A theoretical model was set up for the 3-dimensional reconstruction of the wheel coordinates,the calculation process of the wheel hub center coordinates was discussed.The results of application of the established experimental system to the real vehicle showed that the proposed theoretical model is correct and the experimental system is characterized by high detection precision.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2010年第3期645-649,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
吉林省交通厅科技项目(2006-1-7-2)
国家自然科学基金项目(50775094)
关键词
车辆工程
立体视觉
图像处理
轴距左右差
检测
vehicle engineering
stereovision
image processing
wheelbase difference
detection
