近年来,机械工业系统进步显著,对自动测量,自动检查,在线测量等测量系统的要求也随之提高。其中光学测量法具有非接触、快速、高精度测量之优点,引起了人们的注目。在测量圆棒的直径等被测对象时,可采用 In recent years, the mechanical industrial system has made remarkable progress, and the requirements for automatic measurement, automatic inspection, on-line measurement and other measurement systems have also increased. Among them, the optical measurement method has the advantages of non-contact, rapid and high-precision measurement, attracting people’s attention. In measuring the diameter of the rod and other objects to be measured, can be used