Abstract: This paper presents a new method for automatic road rut detection，which is based on structured light measurement and image processing methods.Firstly，the linear structured light is projected onto the road surface and the image is acquired by a CCD camera，and then the rut curve is obtained by image processing and analysis，and finally a rapid and effective calibration method based on broad is proposed to calculate rut depth.The results have high coherence comparing with that obtained by people，and have much higher precision and efficiency than other similar instrument.

Key words: rut detection, structured light, digital image processing, calibration

摘要： 提出一种新的路面车辙自动检测技术，它基于结构光测量和数字图像处理方法，首先将直线型结构光投射到待测路面，由CCD摄像机采集结构光图像，然后通过图像处理和分析方法提取车辙深度曲线；最后提出了一种快速有效的基于模板的标定方法来计算车辙深度。测试结果与人工测量有很高的一致性，且比现有其他仪器有高的多的精度和效率。

关键词: 车辙检测, 结构光, 数字图像处理, 标定