Install OpenCV3 on Anaconda3 & python3.6 Mac
$ git clone https://github.com/opencv/opencv
$ git clone https://github.com/opencv/opencv_contrib
$ cd ~/opencv
$ mkdir build
$ cd build
$ cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D PYTHON3_LIBRARY=/Users/<username>/anaconda/envs/<env>/lib/libpython3.6m.dylib \
-D PYTHON3_INCLUDE_DIR=/Users/<username>/anaconda/envs/<env>/include/python3.6m/ \
-D PYTHON_DEFAULT_EXECUTABLE=/Users/<username>/anaconda/envs/<env>/bin/python3.6 \
-D PYTHON_PACKAGES_PATH=/Users/<username>/anaconda/envs/<env>/lib/python3.6/site-packages \
-D INSTALL_C_EXAMPLES=OFF \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D BUILD_EXAMPLES=ON \
-D BUILD_opencv_python3=ON \
-D BUILD_opencv_python2=OFF \
-D INCLUDE_DIRECTORIES=/Users/<username>/anaconda/include/python3.6m/ \
-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules ..
$ make -j4
$ make install
$ python
import cv2
ImportError: No module named cv2
Fix python imports.
$ cd ~/opencv/lib/python3.6/site-packages
$ mv cv2.cpython-36m-darwin.so cv2.so
$ cp cv2.so /Users/<username>/anaconda3/lib/python3.6/site-packages
$ python
import cv2
cv2.__version__
'3.2.0-dev'