中文说明：逆透视变换的算法，先生成一个图像然后将图像坐标系和世界坐标系进行转换最后将消除透视效果的图像显示出来
English Description：
In the algorithm of inverse perspective transformation, an image is formed, and then the image coordinate system and the world coordinate system are transformed. Finally, the image without perspective effect is displayed