用python编写openv程序

Question

我看不懂图像

import cv2
img = cv2.imread('instra.jpg')
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()


import cv2
img = cv2.imread('instra.jpg')
cv2.imshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()

cv2.imshow('image',img)

cv2.error: OpenCV(4.1.0) C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:352: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'

Answer 1

似乎无法加载图像。检查您的图像是否存在于当前目录中，并查看以下帖子：cv2.imread: checking if image is being read以检查您的图像是否已加载。你知道吗