中文说明：机器视觉作为一种现代检测技术，具有非接触、全视场测量、高精度和自动化程度高的优点对耐火砖的裂纹进行检测。本程序部分为对耐火砖的中心线进行提取。
English Description：
Machine vision as a modern testing technology, noncontact, full field measurement, high precision and high automation for crack detection of refractory bricks. Part of this program for the centerline extraction of refractory bricks.