Natural Cubic 插值，里面有一个经典实例，希望有用-Natural Cubic Splines interpolation, there are a classic example of the hope that useful. . .

关于数字图像的三次卷积插值，比三次样条，线性插值等更加有效-Cubic convolution interpolationfor digital image processing，it can be shown that the order of accuracy of the cubic convolution method is between that of linear interpolation and thaotf cubic splines.