cv2.imshow未实现Mac python3 opencv3

Question

I'm new to OpenCV and am having a problem with cv2.imshow. Here's my code:

import numpy as np
import cv2

print("Version is", cv2.__version__)
print("Build info", cv2.getBuildInformation())
img = cv2.imread('../coelacanth.jpeg', cv2.IMREAD_COLOR)
if img is None: 
    print("no image")
else:
    print("there is an image")
cv2.line(img, (0,0), (150, 150), (255, 255, 255), 15)

cv2.imshow('image', img)
cv2.waitKey(0)

cv2.destroyAllWindows()

I get this error:

line 16, in <module>
    cv2.imshow('image', img)
 line 16, in <module>
cv2.imshow('image', img)
cv2.error: /Users/travis/build/skvark/opencv-python/opencv/modules/highgui/src/window.cpp:583: error: (-2) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function cvShowImage

The call to cv2.line seems to work. If try cv2.waitKey(0) without the imshow , I get the same error.

I installed OpenCV3 with

brew install --with-examples --with-contrib --with-python3 --with-qt --without-python -v opencv3

So, clearly I need to

Rebuild the library with Windows, GTK+ 2.x or Carbon support

but I don't know how to do that and haven't been able to work that out from searching other questions. Does anyone have any suggestions?

Answer 1

It was a pathing problem. In .bash_profile , we commented out

#PATH="/Library/Frameworks/Python.framework/Versions/3.6/bin:${PATH}"
#export PATH

Then uninstalled with brew uninstall opencv3 and reinstalled with the brew command given in the original question.