Hereinto, the numeralization of 3D prototype is the firstly important process.The accuracy of the objects’ numeralization will influence the quality of the digital reconstruction of the objects.

三维原数字是逆向工程中首要环节，其得到原数据精度将直接影响到重建质量。

There are two key techniques in reverse engineering, the numeralization and surface reconstruction of 3D objects.

三维物体数字及曲面重构是逆向工程两个核心问题。