This paper is based on the protection and development of cultural relics,with the help of Geomagic software,mainly study how to improve the efficiency and accuracy of model building and rapid prototyping.We use the Handyscan3D handheld three-dimensional laser scanner to obtain the data of the original point cloud,use the reverse software Geomagic for data filtering,data filling,smoothing,data reduction and other pre-processing operations,bring the Geomagic software which has accurate surface module to bear the surface reconstruction and get a new surface model.After that,the new CAD model will be generated in Pro/Engineer by the 3D model after the error detection data processing.Finally,using the 3D printing rapid prototyping technology to verify the experimental data,so as to realize the rapid imitation of cultural relics,which provide a new way for digital protection and development.%以文物的保护和传播为目的,基于Geomagic软件,对如何提升逆向建模快速成型的准确性及效率方面进行了研究.运用Handyscan3D手持三维激光扫描仪进行后母戊鼎点云数据的获取,使用逆向软件Geomagic进行数据过滤、数据补缺、平滑处理、数据精简等预处理操作.并基于Geomagic的精准曲面模块进行曲面重构,得到了曲面模型.将通过误差检测数据处理之后的三维模型,在Pro/Engineer中生成实体CAD模型,并通过3D打印快速成型技术进行实验数据验证,实现了文物快速仿制,为其数字化保护和开发提供了新途径.
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