文中以光电检测技术为基础，完成了柱状机械零部件的激光扫描检测以及其三维重构系统的设计。传统的测量方法，会使被测物体表面发生微小变形，导致测量精度下降。光学技术的引入，实现了非接触测量。激光更是由于其速度快、精度高、量程大、抗光电干扰能力强得到了广泛的应用。文中实现对柱状机械零部件的外径、高度的快速准确的测量，及曲面的三维重构。该系统切实可行、操作简单，可以精确地恢复出二维图像检测方法所不能提供的物体的位置、几何形状等三维信息。

Based on the optical detection technology, the columnar machine parts are tested by laser scan? ning and three-dimension (3D) reconfigurable system is designed. Traditional measurement methods lead to a small deformation of the measured object surface, and even the accuracy decreases. This problem is solved with realization of a non-contact measurement by the introduction of optical technology. Laser is used widely due to its high speed, high precision, large range and strong anti-electrooptical jamming. The outer diameter and the height of columnar mechanical parts are measured precisely, and the surface of the 3D reconstruction is achieved. The system is feasible and simple, it can restore precisely the location of the object, geometric shapes, and 3 D in? formation that the 2D image detection method cannot provide.