successfully import the OpenCV, but can't get it work

Question

I am new to python. Just trying to get the basic idea of python. Here is how I try and get error msg, after I installed the package.

import cv2 import numpy as np img = cv2.imread('lena.jpg') print(img.shape)

but i just get a 'NoneType' msg.

It seems I successfully import the openCV package, but I just can't use its functions.

I did move the 'lena.jpg' to the same directory, but still get error msg.

Please advise how I can move on.

Are u sure the lena.jpg file is in the same directory?

jarrey
– jarrey

2020-04-01 16:53:07 +00:00
Commented Apr 1, 2020 at 16:53 — jarrey
– jarrey, Commented Apr 1, 2020 at 16:53

code-lukas · Accepted Answer · 2022-08-03 10:09:38Z

1

It's most likely that lena.jpg is not in your current working directory. Try specifying the exact path to your image or moving the file to the same directory as your test.py.

edited Aug 3, 2022 at 10:09

answered Apr 1, 2020 at 16:52

code-lukas

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2 Comments

Grec001 Over a year ago

Thanks, you are correct. I did move the jpg to the same directory, but it seems the working directory is not at where I thought. Whne I indicate the full path. It works.

code-lukas Over a year ago

You can use import os and os.getcwd() to get your current working directory, then it should just be a matter of copying the file to the same directory.

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