在产品的设计利制造过程中,有的情况下,设计者和制造者面对的是形状复杂的实物(或样件和模型),为了利用先进制造技术,需要通过一定途径将其转化为CAD模型,这种基于产品实物或物理模型的数据来重构设计慨念,实现对原样件的逼近或修改从而达到复制该产品或获得新产品的技术称之为逆向工程或反求工程(Reverse engineering-RE)。 In the process of product design and manufacturing, in some cases, designers and manufacturers face complex objects (or prototypes and models). In order to utilize advanced manufacturing technology, they need to be converted into CAD The technique of reconstructing the design concept based on the data of the physical or physical model of the product to achieve approximation or modification of the original sample so as to copy the product or acquire a new product is called reverse engineering -RE).