OpenCV won't install to python

Question

I am trying to install OpenCV 4.5.5 with CUDA support. I installed the source from their GitHub and the additional OpenCV contrib and built it with CMAKE. I checked BUILD_opencv_python3 when it was done configuring and generating it showed that it had detected python3 and had installed cv2 in site-packages.

But cv2 isn't in the site-packages.

So it doesn't load in python. But it does give an interesting error

What should I do?

I already tried doing a fresh build with CMAKE but it didn't work.

After building OpenCV it generates a PYD file in the lib folder. I don't know if that is helpful or not.

Thanks

Please don’t post images of code, error messages, or other textual data. — tripleee
– tripleee, Commented Dec 30, 2021 at 11:25

Christoph Rackwitz · Accepted Answer · 2021-12-30 16:25:01Z

2

You must have missed a step in the process.

"Configure" step in cmake-gui, investigates the environment (various paths, e.g. where python wants packages to go) and prepares information for the build
"Generate" step in cmake-gui, generates the actual build files (VS Solution)
open the .sln in Visual Studio
build the ALL_BUILD target
build the INSTALL target, and this installs the files, also the python package

edited Dec 30, 2021 at 16:25

answered Dec 30, 2021 at 11:20

Christoph Rackwitz

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1 Comment

Dylan Riley Over a year ago

I just ran the INSTALL and it seemed to have worked. I did run the ALL_BUILD though.

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