python图片剪裁代码(图片按四个点坐标剪裁)

用了两种方法保存图片,opencv和Image,实践证明opencv非常快 from PIL import Image import os import cv2 import time import matplotlib.pyplot as plt def label2picture(cropImg,framenum,tracker): pathnew ="E:\\img2\\" # cv2.imshow("image", cropImg) # cv2.waitKey(1) if (os.path.exists(pathnew + tracker)): cv2.imw