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Thanks to Homebrew, this is fairly easy. Follow these steps .

Homebrew

This up-to-date guide covers everything you need to know, including how to fix a broken brew installation caused by OS X upgrade.

With a fresh OSX install, I only need these steps :

1. XCode Command Line tools:

   xcode-select --install
   

2. Install Homebrew

   ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
   

3. Check installation

   brew doctor
   

OpenCV/Python 2

I have choosen this flavour.

Python 2

Most OpenCV sample scripts don’t run with Python 3. In 4 steps :

1. brew install python
2. brew linkapps python
3. brew install gcc
4. sudo pip install -U numpy scipy matplotlib scikit-learn scikit-image

OpenCV

You may choose between OpenCV3 and OpenCV2

OpenCV3

Without OpenCL (better on my old 2010 laptop) :

1. brew install tesseract
2. brew tap homebrew/science
3. brew install opencv3 --with-contrib
4. ln -s /usr/local/opt/opencv3/lib/python2.7/site-packages/cv2.so /usr/local/lib/python2.7/site-packages/

OpenCV2

Without OpenCL (better on my old 2010 laptop) :

• brew install tesseract
• brew tap homebrew/science
• brew install opencv

OpenCV/Python 3

Python 3

1. brew install python3
2. brew install gcc
3. sudo pip3 install -U numpy scipy matplotlib scikit-learn scikit-image

OpenCV

You may choose between OpenCV3 and OpenCV2

OpenCV3/Python 3

1. brew install opencv3 --with-python3
2. ln -s /usr/local/opt/opencv3/lib/python3.5/site-packages/cv2.cpython-35m-darwin.so /usr/local/lib/python3.5/site-packages/

OpenCV2/Python 3

1. brew install opencv --with-python3