OpenCV not working properly with python on Linux with anaconda. Getting error that cv2.imshow() is not implemented

Question

This is the exact error that I am getting. My OS is Ubuntu 16.10.

OpenCV Error: Unspecified error (The function is not implemented. Rebuild the library with

Answer 1

Answer 2

If you are running inside docker then you may get this error.Solution uninstall current and install the headless one

pip install opencv-python==3.4.5.20

pip install opencv-contrib-python==3.4.5.20

If you are writing to the image and displaying it, you may need the following

apt-get update && apt-get install -y libglib2.0-0 libsm6 libxext6 libxrender1

And if you are wondering how to get the display from Docker, it is possible via X11 in your host