Abstract: Recently,one of research emphases in Reverse Engineering field based on Industrial Computerized Tomography is to obtain the characteristic parameters of an object’s contours.In this article,we improve the track algorithm of ICT contours for extracting the object’s contours rapidly and precisely,and then use vectorization technology to accomplish the geometrical characteristic recognition of 2D contours at any position or any direction from the CT images,and obtain the geometrical parameters of the contours at the same time.These algorithms are integrated into a specialized and practical Reverse Engineering software system.