IOError with Python and OpenCV

Question

I want to do some OpenCV Basic Operations using Python. My Problem is that the Pythoninterpreter says that the file I want to open with cv.LoadImage() dont exists. But as you can see in my code and the and the Interpreter Output this file exists and the Program should be able to read it.

Likly the answer is simple (I am new at Python Programming!). Thanks for answers!

Here my Code:

import cv, sys, os

print sys.argv[1]
print os.getcwd()
print os.access(sys.argv[1], os.F_OK)

img = cv.LoadImage(sys.argv[1], 1)

cv.NamedWindow("orginal", CV_WINDOW_AUTOSIZE)
cv.ShowImage("orginal", img)

cv.waitKey(0)

here is the Pythoninterpreter Output:

dennis@Powertux:~/opencv/showPicture$ python2.5 showPicture.py google-de02.jpg google-de02.jpg
/home/steffke/opencv/showPicture
True
Traceback (most recent call last):
  File "showPicture.py", line 7, in <module>
    img = cv.LoadImage(sys.argv[1], 1)
IOError: [Errno 2] No such file or directory: 'google-de02.jpg'

code looks fine to me though. may I know ls -l google-de02.jpg results? — YOU
– YOU, Commented Nov 20, 2009 at 17:52

Dennis Stritzke · Accepted Answer · 2009-11-20 18:02:36Z

2

I've tried both suggestions, but its the same like before. the os.access returns a TRUE but the function cv.LoadImage produce the same error.

Any other solutions?

anyhow thanks fpr answer...

answered Nov 20, 2009 at 18:02

Dennis Stritzke

5,6281 gold badge23 silver badges30 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Paul Lammertsma Over a year ago

You might want to respond to the answers by commenting, as it is somewhat unclear to which one(s) you are referring.

Dennis Stritzke Over a year ago

So now in a comment ;-) the repr function does its work but the cv.LoadImage funtion cant handle it, too.

kettlepot · Accepted Answer · 2009-11-20 17:46:51Z

1

Try giving it the whole path instead of the name only, or maybe using .\google-de02.jpg.

answered Nov 20, 2009 at 17:46

kettlepot

10.6k29 gold badges75 silver badges103 bronze badges

1 Comment

Paul Lammertsma Over a year ago

It seems that the OpenCV script can't access the file. Like terabytest suggests, make sure that the path to the file within the CV package is correct (e.g. by specifying an absolute path) and that the permissions are set correctly.

kettlepot · Accepted Answer · 2009-11-20 18:26:47Z

0

Try using the repr function when the exception happens.

answered Nov 20, 2009 at 18:26

kettlepot

10.6k29 gold badges75 silver badges103 bronze badges

Collectives™ on Stack Overflow

IOError with Python and OpenCV

3 Answers 3

2 Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related