分析了逆向工程中自由曲面的反求过程，对接触式和非接触式测量方法进行了比较。
The process of constructing free-form surfaces in Reverse Engineering and compares the untouched and touched measure methods was alysed in this paper.
提出了一个新型的产品轮廓反求的逆向工程系统，其中轮廓数字化扫描方法以液体作为测量介质，液体的液面与产品之间形成的交线即为要测量的产品的截面线。
A new reverse engineering system of product profiles was presented, it included the digitized scanning system for product profiles based on liquid, CAD system, mold design and manufacturing system.
切片轮廓图像匹配是实现基于层析图像的逆向工程产品反求的关键技术之一。
Slice contour matching is one of the key technologies in the reverse engineering based on slice image.
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