python + OpenCV实现鼠标和图像的交互显示ROI（感兴趣区域）

1.首先选取一张图片 import numpy as np import cv2 img = cv2.imread('D:/OpencvVideo/1.jpg') # create a window cv2.namedWindow('image', flags= cv2.WINDOW_NORMAL | cv2.WINDOW_FREERATIO)# 定义窗口1 cv2.namedWindow('

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