Python Assertion failure: size.width> 0 && size.height> 0 in function imshow

Assertion failure : size.width>0 && size.height>0 in function imshow

The log where the error occurred in the code below is as follows

OpenCV Error: Assertion failed (size.width>0 && size.height>0) in imshow, file /tmp/opencv-20170825-90583-1pdhamg/opencv-3.3.0/modules/highgui/src/window.cpp, line 325
Traceback (most recent call last):
  File "imageToStr.py", line 6, in <module>
    cv2.imshow('fuck image', img)
cv2.error: /tmp/opencv-20170825-90583-1pdhamg/opencv-3.3.0/modules/highgui/src/window.cpp:325: error: (-215) size.width>0 && size.height>0 in function imshow

The code looks like this:

import numpy as np
import cv2

img = cv2.imread('./fuckIage.png', cv2.IMREAD_COLOR)
cv2.imshow('fuck image', img)
cv2.waitKey(0)

The run-time hierarchy is as follows.

.
├── fuckIage.png
├── imageToStr.py
├── main.py
├── stu.py
├── study.py
└── study.pyc

The file exists and is in the path.

So for the time being, let's specify the screen size.

import numpy as np
import cv2

img = cv2.imread('.fuckIage.png', cv2.IMREAD_COLOR)
cv2.namedWindow('img', cv2.WINDOW_NORMAL)
cv2.imshow('fuck image', img)
cv2.waitKey(0)

I was able to execute it.

After that, try the following.

import numpy as np
import cv2

img = cv2.imread('.fuckIage.png', cv2.IMREAD_COLOR)
#Let's comment out. cv2.namedWindow('img', cv2.WINDOW_NORMAL)
cv2.imshow('fuck image', img)
cv2.waitKey(0)

success!

Maybe the value didn't pass,

Unable to refer to error

Probably before doing these

Given that the numpy version is causing errors and after fixing them,

The value passed to the binary is cleared and

So I think that such a case occurred

This is a hypothetical stage.

I still don't know the real cause

Currently trying to reproduce to investigate the cause,

I will write it here as soon as I understand it

If anyone is suffering from a similar event

I would like you to tell me.