import numpy as np
import cv2 as cv
img1 = cv.imread('ml.jpg')
img2 = cv.imread('opencv-logo2.png')
assert img1 is not None, "文件无法读取，使用os.path.exists()检查"
assert img2 is not None, "文件无法读取，使用os.path.exists()检查"
dst = cv.addWeighted(img1, 0.7, img2, 0.3, 0)
cv.imshow('dst', dst)
cv.waitKey(0)
cv.destroyAllWindows()
