图像操作中比较基础的就是透视变换，初进open cv，实现了透视变换，代码如压缩吧所示(Perspective transformation by opencv)

在python中实现透视变换。算法正确高效，这种仿射变换经过修改后可用于图像矫正等用途。(The perspective transformation is implemented in python. The algorithm is correct and efficient. This affine transformation can be used for image correction and other purposes after modification.)