least-squares approximation

For segments with poor smoothness,their control points are modified in a process of least-squares approximation optimizati.

对光顺性较差的曲线段,通过最小二乘逼近优化过程调整其控制顶点,从而达到光顺目的。

An algorithm of designing the least squares approximation filter with linear phase;

一种设计线性相位最小二乘逼近滤波器的方法

In this paper, moving least-square approximation method is discussed first.

首先对移动最小二乘逼近法进行了研究,针对其容易形成病态方程组的缺点,提出了以带权的正交函数作为基函数的方法——改进的移动最小二乘逼近法。