According to the feature of contacting measurement, the dissertation first puts forward the twice-sampling planning method for free-form surface in order to improve measuring efficiency.
根据接触测量的特点，为提高测量效率，本文提出了一种两次采样的曲面数字化规划方法。
Lastly, feature recognition is implemented automatically according to the sequence of regular surfaces, swept surfaces and free-form surfaces.
最后按照规则曲面、扫掠曲面、自由曲面的顺序进行特征的自动识别。
Based on the feature domain of Data Clouds obtained in the former chapter, this chapter gets its feature points. Finally free-form curves interpolated through these feature points are produced.
在第二章得到特征点云带的基础之上，本章进而得到点云的特征点，并根据这些特征点生成自由曲线，这些自由曲线插值于特征点。
Free form surface is most important feature to shape of product such as plane, automobile, motorcycle.
自由曲面是工业产品，尤其是飞机、汽车、摩托车等行业产品外形的重要特征。
At the basis of analyzing generalized points photogrammetry based on line feature, making use of the ICP arithmetic, a resection from free-form control curves has been constructed.
首先介绍了基于广义点的摄影测量，在分析基于直线特征广义点摄影测量的基础上，通过ICP方法的引入，从而建立了一种基于自由态控制曲线的外方位元素解算方法。
At the basis of analyzing generalized points photogrammetry based on line feature, making use of the ICP arithmetic, a resection from free-form control curves has been constructed.
首先介绍了基于广义点的摄影测量，在分析基于直线特征广义点摄影测量的基础上，通过ICP方法的引入，从而建立了一种基于自由态控制曲线的外方位元素解算方法。
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