摘要
本文根据用最小二乘法拟合二次曲线的原理，在分析了一些其它文献中算法的基础上，提出了一种以圆弧或圆拟合平面曲线的改进的二级曲线拟合算法。
This paper discusses the method for estimating the location of the center of a circular arc and its radius by the least-square method. On the basis of analyzing some other algorithms,presents an improved algorithm of fitting conic arcs and straight line.
