opencv python osx
I'm trying to get openCV to run from python on my mac using the MacPorts install http://opencv.willowgarage.com/wiki/Mac_OS_X_OpenCV_Port, and also trying to follow The Petite Geek's guide:
sudo port -v install opencv +python26
It runs for about 10 minutes without errors.
I download ctypes-opencv source and demo files. I navigate to the src directory and run:
sudo python setup.py install
I see like 50 lines almost all of the form: copying ... -> ..., which looks good to me. No errors here.
I add export DYLD_FALLBACK_LIBRARY_PATH=/opt/local/lib to the end of my ~/.profile.
I open a new terminal to test my install. From my home folder:
$ python Python 2.6.2 (r262:71600, Apr 16 2009, 09:17:39) [GCC 4.0.1 (Apple Computer, Inc. build 5250)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import cv Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named cv >>>
Does not work.
I read somewhere that opencv installs python bindings with the default version of python for OSX, and I am probably running a non-default version, but this is not actionable information to me.
I struggled for a while with Python on Mac. Here is how I finally (and easily!) installed it. Remove all the things Python you have on there already. They will probably be located at /Library/Frameworks/Python.Framework and /opt/local/var/macports/software/py26*
First download Python with Macports.
sudo port install python27
Then make sure your system is using this version with:
sudo port select --set python python27
Next install numpy with:
sudo port install py27-numpy
Now install opencv:
sudo port install opencv +python27
Now edit your ~/.bash_profile with:
sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit ~/.bash_profile
open -t ~/.bash_profile
and add the line:
or where ever your version of the cv.so file is hidden....
Now restart terminal and try:
%python >>>import cv
I'm using Netbeans for opencv and python and it works really nice. Good luck.
$ brew search opencv homebrew/science/opencv $ brew install homebrew/science/opencv
after installed, there is warning:
==> Caveats If you need Python to find the installed site-packages:
mkdir -p ~/Library/Python/2.7/lib/python/site-packages
echo '/usr/local/lib/python2.7/site-packages' > ~/Library/Python/2.7/lib/python/site-packages/homebrew.pth
so, just do
mkdir -p ~/Library/Python/2.7/lib/python/site-packages echo '/usr/local/lib/python2.7/site-packages' > ~/Library/Python/2.7/lib/python/site-packages/homebrew.pth
If you notice the first line output when running python, you'll see that you're still using the Apple-supplied Python interpreter. Try installing and using the python-select package in MacPorts and then try the instructions again starting from step 2.
Also make sure you followed all of the steps when installing MacPorts so that /usr/local/bin is on $PATH.
Another "hack" I found during my struggles using CMake (but maybe the problem is the same with ports) : it appears that the python modules location has been duplicated on my Mac OS Lion, for a reason I can't explain.
CMake wants to put the "cv" module here :
Whereas my default Python interpreter is looking here (thanks PyCharm for telling me) :
Moving both cv2.so and cv.py files to the second location, did the trick for me. I don't know if this is the cleanest way.
Hope it can help some googlers !