google colab, cv2_imshow throws error: 'NoneType' object has no attribute 'clip'-CodePudding

I am learning the basics of OpenCV and while running the following piece of code in google colab, it gives an error.

from google.colab.patches import cv2_imshow
import cv2
img=cv2.imread("geeks14.png")
cv2_imshow(img)

The error is

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-14-569c91be5363> in <module>()
      2 import cv2
      3 img=cv2.imread("geeks14.png")
----> 4 cv2_imshow(img)

/usr/local/lib/python3.7/dist-packages/google/colab/patches/__init__.py in cv2_imshow(a)
     20       image.
     21   """
---> 22   a = a.clip(0, 255).astype('uint8')
     23   # cv2 stores colors as BGR; convert to RGB
     24   if a.ndim == 3:

AttributeError: 'NoneType' object has no attribute 'clip

CodePudding user response：

The issue isn't cv2_imshow.

The issue is that imread() returned None. It could not read the given path as an image file.

Check the usual reasons for imread() failing, such as:

file isn't there (look up what relative paths are relative to, or use absolute paths)
file is corrupted
file has a format that is not supported by OpenCV
you don't have access rights
system is broken in some way

CodePudding user response：

Please check in colab if file geeks14.png is present there or not. You need to upload Check sample SS here!