Error: Assertion failed (size.width>0 && size.height>0) in imshow 可能之一 —— 路径不能含中文

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有一个作业要用 opencv 处理视频，于是 pip install opencv-python 安装就来试了

按网上的例子写了下面这个代码，结果报错

import cv2
img = cv2.imread(r"E:\2我的收藏夹\壁纸\7986852464830762.jpg")
cv2.imshow("ff", img)

Traceback (most recent call last):
  File "C:/Users/Administrator/Desktop/2.py", line 3, in <module>
    cv2.imshow("ff", img)
cv2.error: OpenCV(3.4.3) C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:356: error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow'

然后试了下路径换成全英文，问题解决

import cv2
img = cv2.imread(r"C:\Users\Administrator\Desktop\ee024134970a304e7244d827d1c8a786c8175ca1.jpg")
cv2.imshow("ff", img)