An Approach to Measuring Vehicle Four-Wheel Alignment Parameters Based on Computer Vision
会议名称：《2007 8th International Conference on Electronic Measurement & Instruments（ICEMI’2007）》
会议日期：2007年
学科分类：0810[工学-信息与通信工程] 08[工学] 080203[工学-机械设计及理论] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0802[工学-机械工程] 0835[工学-软件工程] 081002[工学-信号与信息处理]
关 键 词：mathematical model,four-wheel alignment,computer vision homography matrix
摘 要：Due to traditional four-wheel alignment measurement techniques have such problems as need for many sensors, complicated calibration, fussy operation, low speed of inspection and low accuracy etc. Based on computer vision, the mathematical model for vehicle four-wheel alignment is set up. By taking sequence images of the target board fixed on the wheel in motion and calculating homography matrices between the target board and its images and rotation matrices, the directional cosine of rotation axis is obtained and further more the wheel alignment parameters are solved. Finally, the effectiveness of the mathematical model is verified by experiment.