The algorithm is polynomial curvefitting based on leastsquare approximation. The experimental result shows its performance is more effect than that of the piecewise linear algorithm.
该算法是在最小二乘意义上的多项式曲线拟合，实验结果表明，其校正效果明显优于分段线性校正算法。
2
A new feature-points extraction algorithm is proposed, which USES leastsquare method fitting contour curve and combines slope, curvature information to extract feature-points.
提出一种新的轮廓特征点提取方法，它利用最小二乘法拟合轮廓曲线，结合斜率、曲率信息提取特征点。
3
A new method of leastsquare is raised in curvefitting of flood frequency calculating and its specific properties are analysed.