用matlab编写逆投影变换程序，三个m文件分别代表最近邻插值法，双线性插值法，立方卷积插值法，通俗易懂，含有测试图片，打开就能用-Inverse projection transformation program, matlab prepared three m documents represent the nearest neighbor interpolation, the bilinear interpolation and cubic convolution interpolatio

图像的缩放，采用两种方法，可以直接运行。向后映射，1.最近领域法，2.双线性插值法-Image scaling, two methods can be run directly. Backward mapping, a recent field of law, (2) bilinear interpolation