I am trying to run cv2, but when I try to import it, I get the following error:
ImportError: libGL.so.1: cannot open shared object file: No such file or directory
The suggested solution online is installing
apt install libgl1-mesa-glx
but this is already installed and the latest version.
NB: I am actually running this on Docker, and I am not able to check the OpenCV version. I tried importing matplotlib and that imports fine.
Add the following lines to your Dockerfile:
RUN apt-get update
RUN apt-get install ffmpeg libsm6 libxext6 -y
These commands install the cv2 dependencies that are normally present on the local machine, but might be missing in your Docker container causing the issue.
This is a little bit better solution in my opinion. Package python3-opencv includes all system dependencies of OpenCV.
RUN apt-get update && apt-get install -y python3-opencv
RUN pip install opencv-python
Even though the above solutions work. But their package sizes are quite big.
libGL.so.1 is provided by package libgl1. So the following code is sufficient.
apt-get update && apt-get install libgl1