国内较新的列车车轮踏面擦伤图像检测算法，采用图像增强、图像分割、目标边缘提取等技术，通过自动搜索边缘获取缺陷径向、轴向、面积尺寸。 -A new image detection algorithm for wheel tread of train wheel in China is adopted, which is based on image enhancement, image segmentation and object edge extraction.