面向逆向工程的工业CT图像预处理系统开发  

Development of industrial CT image pre-processing system for reverse engineering

作　　者：段黎明[1] 邱猛[1] 吴朝明[1] 

机构地区：[1]重庆大学ICT研究中心,重庆400044

出　　处：《强激光与粒子束》2008年第4期666-670,共5页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目;重庆市自然科学基金资助课题(CSTC2006BB2138)

摘　　要：为了将工业CT技术应用于逆向工程中,开发了一个面向逆向工程的工业CT图像预处理系统。该系统主要通过图像处理、轮廓拟合和数据格式转换三个步骤对工业CT切片图像进行处理,输出的IG-ES格式数据能直接输入到专业化的逆向工程软件中进行3维CAD模型重构,减少了重构3维模型的工作量;输出的2维DXF格式数据能直接输入到AutoCAD软件中进行处理,提高了系统的灵活性。同时,提出了用加权方法计算拟合圆弧的圆心和半径,有效提高了曲线的拟合精度。并通过实例验证了该系统的正确性。To apply industrial computed tomography （CT） technology to reverse engineering effectively, an industrial CT slicing image pre-processing system is developed. The system involves three parts, which deal with image process, contour fitting and data format transform. Using professional software of reverse engineering, the output IGES format data of the system can be reconstructed into 3D CAD model directly, which reduces workload of reconstructing 3D CAD model. On the other hand, the out-put DXF format data of the system can be processed by AutoCAD directly, which improves flexibility of the system. Further- more, the precision of fitted contour is improved by means of calculating the centre and radius of fitted arc based on weighted method. Finally, the correctness of this system is proved with experiments..

关 键 词：工业CT 图像处理 逆向工程 曲线拟合 数据格式转换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]