OpenCV Python: 显示和调整图片大小

import cv2

img = cv2.imread('lena.png') h, w, c = img.shape

cv2.namedWindow('lena') cv2.imshow('lena', img) cv2.waitKey(500)

cv2.resizeWindow('lena', (h//2, w//2)) cv2.waitKey(0) cv2.destroyAllWindows()