提出了基于工业CT技术的装配缺陷自动检测系统的设计方法。系统采用C/S模式，以C++Builder作为前端开发工具，以SQL Server2000作为后台数据库管理系统，可实现工件内部的漏装和误装等装配缺陷无损检测。利用重建图像的灰度级数快速定位出粗略缺陷区域，再以圆投影值、方向码值、Zernike矩值作为特征参数对缺陷精确识别。系统已在重庆大学ICT中心投入使用，识别速度和精度均达到用户要求，运行效果良好。

A design method of automatic assembly defect detecting system based on industrial computer tomography technology was referred. For the realization of non-destructive detecting of assembly defects such as leak installing and wrongly installing in work piece internal structure, this system adopted C/S model, using C++ Builder as front-end development tool and using SQL Server 2000 as background database management system. First defect region was located fast and coarsely using gray levels of the reconstructed image. Then it was recognized accurately by using circle projection value, direction code value and Zernike moment value as character parameters. The system was put into use in ICT center of ChongQing University. Its recognition speed and precision satisfied users demands, and its working effects were favorable.