【摘要】 反求工程是当今 CAD建模技术的一种重要途径 ,它极大地提高了设计人员的设计效率 .然而仅包含曲面信息的三维重构限制了反求工程与 CAD/ CAPP/ CAM系统的集成 .针对这一问题 ,本文提出了基于多色图表示子特征之间空间约束关系的集合运算思路 ,可以较好地得到反求实体的特征信息以及特征树的结构利于其后的 CAD模型的再设计、设计分析和加工更多还原

【Abstract】 Reverse engineering is an important technique in current CAD modeling, it improves design efficiency of designer. But three dimension reconstruction technique only for surface limits integration between reverse engineering and CAD/CAPP/CAM system. Point to this problem, this paper presents a method to operate set with Multicolor Map describing vacuum constraint of sub feature, it can find feature information and feature tree frame in order to redesign, design analysis and machining.更多还原