Search code examples
python-2.7opencvwindows-7

cv2.imread always returns NoneType

cv2.imread is always returning NoneType.

I am using python version 2.7 and OpenCV 2.4.6 on 64 bit Windows 7.

Maybe it's some kind of bug or permissions issue because the exact same installation of python and cv2 packages in another computer works correctly. Here's the code:

im = cv2.imread("D:\testdata\some.tif",CV_LOAD_IMAGE_COLOR)

I downloaded OpenCV from http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv. Any clue would be appreciated.

Solution

  • First, make sure the path is valid, not containing any single backslashes. Check the other answers, e.g. https://stackoverflow.com/a/26954461/463796.

    If the path is fixed but the image is still not loading, it might indeed be an OpenCV bug that is not resolved yet, as of 2013. cv2.imread is not working properly under Win32 for me either.

    In the meantime, use LoadImage, which should work fine.

    im = cv2.cv.LoadImage("D:/testdata/some.tif", CV_LOAD_IMAGE_COLOR)