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阐述反求工程在快速造型技术中所起的作用；目前反求工程在快速造型中常用的测量方法是三坐标测量仪法、激光三角形法、核磁共振（MRI）和CT法。光栅法和自动断层扫描仪法；从测量原理、测量精度以及测量材料和范围等方面对测量方法作出分析和对比；总结在快速造型技术中所用的几种测量数据处理的方法，对比这些方法的原理、精度及使用范围；提出适用于快速造型技术的反求工程系统所应具有的功能。
Described the role of reverse engineering in rapid prototyping technology. At present, the commonly used methods of reverse engineering in rapid prototyping are the CMM method, the laser triangulation method, the magnetic resonance imaging (MRI) and the CT method. Grating method and automatic tomography method. The measurement methods are analyzed and compared in terms of measurement principle, measurement accuracy, material and range of measurement, etc. Several methods of measurement data processing used in rapid prototyping technology are summarized. Principle, precision and scope of application; put forward suitable for rapid modeling technology of reverse engineering system should have the function.