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

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 output DXF format data of the system can be processed by AutoCAD directly, which improves flexibility of the system. Furthermore, 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 wi