分析反求工程的体系结构，综合介绍实物三维几何形状测量方法及其技术特点和发展现状。最后给出主要的测量数据预处理方式。%This thesis first analyzes the system structure of reverseengineering.Then it introduces the measuring techniques for three-dimensional profiles as well as their characteristics and development.Finally，the primary data pre-processing approaches are introduced.
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