图像的仿射变换，共包括4个文件，全都是matlab文件，分别为affine.m,grad.m,wrap.m,paremetric.m：，对于图像仿射变换以及图像的超分辨率重构非常有帮助。-image affine transformation, including a total of four documents, and all of Matlab documents, affine.m respectively, grad.m, wrap.m, paremetric.m :, for th