可以了解图象插值方面的知识,包括线性插植, 非线性插值,bicubic插值,三次立方卷积

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.