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opencv-contrib-python 3.4.4.19 did not install data folder on Raspberry Pi

asked 2019-05-24 23:15:32 -0500

alanmcdonley gravatar image

For some reason my cv2.data.haarcascades variable points to '/usr/local/lib/python3.5/dist-packages/cv2/data/', but that location only has __init__.py and __pycache__ folder (which only has __init__.cpython-35.pyc in it).

This is how I installed OpenCV on my RaspberryPi Raspbian(forRobots) Stretch version:

sudo apt-get install libhdf5-dev libhdf5-serial-dev libhdf5-100
sudo apt-get install libqtgui4 libqtwebkit4 libqt4-test python3-pyqt5
sudo apt-get install libatlas-base-dev
sudo apt-get install libjasper-dev
wget https://bootstrap.pypa.io/get-pip.py
sudo python3 get-pip.py
sudo pip install opencv-contrib-python

Q: I managed to get the data, but I would like to know what I could have done to have it installed where it thinks it is.

ps. this is what I did to get the data folder:

cd ~/Carl/Examples/OpenCV/
wget https://github.com/opencv/opencv/archive/3.4.4.zip
unzip *.zip

Data is in ~/Carl/Examples/OpenCV/opencv-3.4.4/data

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opencv does not maintain any python distributions, if you run into trouble with PIP, you should ping the maintainer of that package

then, it's a miracle, that they even install a "data" folder (a lot of persons won't ever miss it) it may not even be relevant, since you can download anything you need from github

berak gravatar imageberak ( 2019-05-25 02:05:54 -0500 )edit

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answered 2019-05-25 07:27:10 -0500

supra56 gravatar image

updated 2019-05-25 07:32:32 -0500

The answer is NO. If you do this wget https://github.com/opencv/opencv/archive/3.4.4.zip. Then you cannot do this sudo pip install opencv-contrib-python. The pip doesn't install from github. You simply download from same github... cd ~/Carl/Examples/OpenCV/ wget https://github.com/opencv/opencv_contrib/archive/3.4.4.zip Keep in mind, it is better to use OpenCV 4.1.0.

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Asked: 2019-05-24 23:15:32 -0500

Seen: 41 times

Last updated: May 25