摘 要
反求工程是对已有产品反求得到计算机模型。反求工程是现代产品设计的新技术，可以用于复杂曲线、曲面设计。在工艺品设计中，外形设计师常用产品的比例模型，最终通过运用反求工程技术将比例模型用数字模型表达，最后得到真实尺寸的CAD模型。此外反求工程技术也在产品开发中表现了其快捷性，使其在工艺品行业中迅速得到了推广和普及。本文通过对鸭子工艺品点云数据的反求实例，阐述了反求工程的概念、特点及其一般流程。以鸭子工艺品为例，详细介绍工艺品反求造型步骤，首先在Imageware完成曲线、曲面反求，并通过误差分析确定，最后在UG中完成曲面处理，生成实体。
关键词：反求工程 曲线 曲面拟合 鸭子 工艺品
Abstract
Reverse engineering is a process that reverses the existing products to gain the computer models. Reverse engineering is the new technology of modern product design, which can be used for the design of complex curve and surface and so on. In the Arts & Crafts design, through scale models the designer get the true size of the CAD model by the use of reverse engineering technology to the digital model with the ratio of expression of the model. The reverse engineering technology in product development has also demonstrated its speed so that in the handicraft industry has been the promotion of rapid and universal. This paper focus on a reverse engineering process, the point cloud data of the ducks, to gain characteristics, and general process, to introduce the detail of modeling crafts reverse steps. First, complete the curve by Imageware, then reverse surface, and through error analysis, and finally complete it in UG surface processing, generating entities.
Key words: Reverse Engineering；Curves；Surfaces fitting；Duck； Crafts
