CODEWITHSUNDEEP
pythonopencvinstallationvirtualenvopencv3.0
Matthieu Pizenberg
Matthieu Pizenberg

Reputation: 461

Using python with a specific version of OpenCV

I am currently working on a project that add a new module to OpenCV 3.0 beta so I am trying to use my own compiled version with Python (just as a remark, the C++ version works).

Since I don't want to mess up with versions of OpenCV and Python already installed, I did not add to ldconfig my specific build/installation of OpenCV 3.0 beta and I would like to use it in a python virtualenv if possible.

So far I have setup the venv and since cv2 is not accessible in it, I update the PYTHONPATH to add the folder containing the cv2.so file (created with sudo apt-get install python-opencv). However, it is not the right version of opencv binding that are loaded :

$ python -c "import cv2; print cv2.__version__"
2.4.8

Have any idea on what I could do ?

EDIT (thanks @otibom):

My build seems to be the reason why I don't have the right cv2.so file. The results of cmake are :

--   Python 2:
--     Interpreter:                 /usr/bin/python2.7 (ver 2.7.6)
--     Libraries:                   NO
--     numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.8.2)
--     packages path:               lib/python2.7/dist-packages

Is there a way to correct that ?

Upvotes: 3

Views: 4479

Answers (2)

Matthieu Pizenberg
Matthieu Pizenberg

Reputation: 461

Regarding the "libraries not found" problem, I removed the file CMakeCache.txt and at the following cmake command it found python libraries. (but I have no idea why that happened)

Upvotes: 1

fouronnes
fouronnes

Reputation: 4028

Compiling OpenCV 3.0 will create its own cv2.so file containing your new module, typically in your opencv3-0-0-beta/build directory. You need to add the OpenCV 3.0 build directory to PYTHONPATH instead of the one created by apt-get.

Upvotes: 0

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