利用偏移量插值实现图像的透视变换（运用了双线性变换原理）-Offset interpolation using the image perspective transformation (using the bilinear transformation principle)

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

数字图像几何变换，程序比较简单，以后实现双线性插值的-Digital image geometric transformation, the procedure is relatively simple, after bilinear interpolation