计算几何评定国度的方法研究

和传统方法相比，计算几何方法评定圆度误差几何直观性强、结果准确，而又能解决同时存在多个最小径向间距MRS(Minimum Radial Separation)圆心的问题。按照被测轮廓的表示，该方法可分为两类：一类是用被测工件表面上取的样本点来近似地表示该轮廓；另一类是用这些样本点产生一个简单多边形来表示该轮廓。这两种方法确定的内接圆是不同的。文章对比分析了它们的适用性、精度和计算效率以及存在的问题。

Study on Computational Geometry Approaches to Assessing Roundnes

This paper reports the development of Computional Geometry(CG) methods for assessing roundness and demonstrates that the Minimum Radial Seperation(MRS)center compared to other centers is the best one to determine roundness.These methods are sorted in two categories according to the represention of meatured contour. One mthod use sampling points from the contour.Such results the difference in detemining the inscribed circle of the concentric circles. This article summaries these methods,analyses and compares their applicability,precision,and efficiency,and proposes existing problem on them.