中文摘要：

介绍了一种新的基于机器视觉的磨损区域几何尺寸的测量方法。该方法在人工指定含有边缘的某一微小区域后，通过一系列窗口对磨损区域的边缘进行跟踪以实现对磨损区域的几何描述。所有的圈像处理仅在含有边缘的窗口中进行，减少了噪声对边缘提取的干扰，也减少了数据处理量，因此具有良好的鲁棒性和较高的处理效率。该方法的测量精度与图像分辨率有关，本文的测量精度优于5μm。

英文摘要：

A method based on machine vision is developed to measure the wearing area, Firstly a small area pointed by the user is used to provide the start point for tracking and extraction. Then a series of windows are used to track and extract the edges of wearing area and the geometrical description of wearing area is acquired. As all image processing is carried out within those windows, the method avoids the disturbance from the noise and reduces the quantity of processed data, and therefore obtaining good robustness and high efficiency. Meanwhile the method enhances the measurement precision to the range of pixels （less than 5μm）.