A very simple method is to use linearinterpolation, which assumes that the unknown function is linear between every pair of successive points.
一个非常简单的方法是使用线性插值，它假定未知函数的线性每对之间的连续点。
2
This method has been developed through the analysis of the simplest linearinterpolation, and the merits of various interpolation methods have been taken into account.
这种方法是在分析了最简单的直线插补，并考虑了各种插补方法的优点以后提出来的。
3
The usual methods of building in-between frames include linearinterpolationmethod and higher order spine interpolation.