January 2018
Intermediate to advanced
268 pages
6h 20m
English
Content preview from OpenCV 3.x with Python By Example - Second Edition
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Virtual environments
If you are using virtual environments to keep your test environment completely separate from the rest of your OS, you could install a tool called virtualenvwrapper by following this tutorial: https://virtualenvwrapper.readthedocs.io/en/latest/.
To get OpenCV running on this virtualenv, we need to install the NumPy package:
$(virtual_env) pip install numpy
Following all the previous steps, just add the following three flags on compilation by cmake (pay attention that flag CMAKE_INSTALL_PREFIX is being redefined):
$(<env_name>) > cmake ...-D CMAKE_INSTALL_PREFIX=~/.virtualenvs/<env_name> \ -D PYTHON_EXECUTABLE=~/.virtualenvs/<env_name>/bin/python -D PYTHON_PACKAGES_PATH=~/.virtualenvs/<env_name>/lib/python<version>/site-packages ...
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