error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'

 

Open the image in Python is always an error

error: OpenCV(4.1.1) 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'

1 import cv2 as cv
2 img = cv.imread('D:\BjutDeeplearning\Opencvtest\python-opencv05\\black.jpg')
3 cv.imshow("img", img)
4 print(img.shape)
5 cv.waitKey(0)
6 cv.destroyAllWindows()

Note three:

Pictures on the path of non-Chinese reading,

Picture instead a non-Chinese name,

Double front picture name or the path \\ preceded by r, the original string:

r'D:\BjutDeeplearning\Opencvtest\python-opencv05\black.jpg'。