Road guardrail defect detection method and system

The invention discloses a road guardrail defect detection method and system, and relates to the technical field of machine vision, and the method comprises the steps: obtaining an image, binarizing the image, correcting the image, carrying out the frequency filtering of the image, detecting the abnormality, and obtaining a defect image. According to the method, the defect detection speed is high, the robustness is high, the defect grade of the road guardrail can be well evaluated through the image marked with the defect position obtained through defect detection, and later maintenance and repair are facilitated. 本发明公开了一种公路护栏缺陷检测方法及系统，涉及机器视觉技术领域，包括：获取图像、二值化图像、矫正图像、图像的频率滤波、检测异常、得到缺陷图像。本发明检测缺陷速度快，鲁棒性高，通过缺陷检测得到的标有缺陷位置的图像可以很好的评定公路护栏的缺陷等级，方便后期进行养护和维修。