How to overcome the following opencv issue installation? - macos

Question

Hello I am trying to run a github repository:
https://github.com/oarriaga/face_classification
as follows:
MacBook-Pro:~/Downloads/face_classification-master$ pip install -r REQUIREMENTS.txt
Collecting keras==2.0.3 (from -r REQUIREMENTS.txt (line 1))
Using cached Keras-2.0.3.tar.gz
Collecting tensorflow==1.1.0 (from -r REQUIREMENTS.txt (line 2))
Using cached tensorflow-1.1.0-cp27-cp27m-macosx_10_11_x86_64.whl
Collecting pandas==0.19.1 (from -r REQUIREMENTS.txt (line 3))
Using cached pandas-0.19.1-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
Collecting numpy==1.12.1 (from -r REQUIREMENTS.txt (line 4))
Using cached numpy-1.12.1-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
Collecting h5py==2.7.0 (from -r REQUIREMENTS.txt (line 5))
Using cached h5py-2.7.0-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
Collecting statistics (from -r REQUIREMENTS.txt (line 6))
Using cached statistics-1.0.3.5.tar.gz
Collecting opencv2-python==3.2.0 (from -r REQUIREMENTS.txt (line 9))
Could not find a version that satisfies the requirement opencv2-python==3.2.0 (from -r REQUIREMENTS.txt (line 9)) (from versions: )
No matching distribution found for opencv2-python==3.2.0 (from -r REQUIREMENTS.txt (line 9))
However I got an error with opencv then I tried:
MacBook-Pro:~/Downloads/face_classification-master$ pip3 install -r REQUIREMENTS.txt
Collecting keras==2.0.3 (from -r REQUIREMENTS.txt (line 1))
Using cached Keras-2.0.3.tar.gz
Requirement already satisfied: tensorflow==1.1.0 in /usr/local/lib/python3.6/site-packages (from -r REQUIREMENTS.txt (line 2))
Collecting pandas==0.19.1 (from -r REQUIREMENTS.txt (line 3))
Using cached pandas-0.19.1.tar.gz
Collecting numpy==1.12.1 (from -r REQUIREMENTS.txt (line 4))
Using cached numpy-1.12.1-cp36-cp36m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
Requirement already satisfied: h5py==2.7.0 in /usr/local/lib/python3.6/site-packages (from -r REQUIREMENTS.txt (line 5))
Collecting statistics (from -r REQUIREMENTS.txt (line 6))
Using cached statistics-1.0.3.5.tar.gz
Collecting opencv2-python==3.2.0 (from -r REQUIREMENTS.txt (line 9))
Could not find a version that satisfies the requirement opencv2-python==3.2.0 (from -r REQUIREMENTS.txt (line 9)) (from versions: )
No matching distribution found for opencv2-python==3.2.0 (from -r REQUIREMENTS.txt (line 9))
I also tried:
MacBook-Pro:~/Downloads/face_classification-master$ brew install opencv3 --with-ffmpeg --with-tbb --with-contrib
==> Installing opencv3 from homebrew/science
==> Installing dependencies for homebrew/science/opencv3: cmake, pkg-config, lame, x264, xvid, ffmpeg, tbb
==> Installing homebrew/science/opencv3 dependency: cmake
==> Downloading https://homebrew.bintray.com/bottles/cmake-3.8.2.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring cmake-3.8.2.sierra.bottle.tar.gz
==> Using the sandbox
==> Caveats
Emacs Lisp files have been installed to:
/usr/local/share/emacs/site-lisp/cmake
==> Summary
🍺 /usr/local/Cellar/cmake/3.8.2: 2,208 files, 29.2MB
==> Installing homebrew/science/opencv3 dependency: pkg-config
==> Downloading https://homebrew.bintray.com/bottles/pkg-config-0.29.2.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring pkg-config-0.29.2.sierra.bottle.tar.gz
🍺 /usr/local/Cellar/pkg-config/0.29.2: 11 files, 627KB
==> Installing homebrew/science/opencv3 dependency: lame
==> Downloading https://homebrew.bintray.com/bottles/lame-3.99.5.sierra.bottle.1.tar.gz
######################################################################## 100.0%
==> Pouring lame-3.99.5.sierra.bottle.1.tar.gz
🍺 /usr/local/Cellar/lame/3.99.5: 26 files, 2MB
==> Installing homebrew/science/opencv3 dependency: x264
==> Downloading https://homebrew.bintray.com/bottles/x264-r2748.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring x264-r2748.sierra.bottle.tar.gz
🍺 /usr/local/Cellar/x264/r2748: 11 files, 3.3MB
==> Installing homebrew/science/opencv3 dependency: xvid
==> Downloading https://homebrew.bintray.com/bottles/xvid-1.3.4.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring xvid-1.3.4.sierra.bottle.tar.gz
🍺 /usr/local/Cellar/xvid/1.3.4: 9 files, 1.2MB
==> Installing homebrew/science/opencv3 dependency: ffmpeg
==> Downloading https://homebrew.bintray.com/bottles/ffmpeg-3.3.2.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring ffmpeg-3.3.2.sierra.bottle.tar.gz
🍺 /usr/local/Cellar/ffmpeg/3.3.2: 243 files, 50.7MB
==> Installing homebrew/science/opencv3 dependency: tbb
==> Downloading https://homebrew.bintray.com/bottles/tbb-2017_U7.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring tbb-2017_U7.sierra.bottle.tar.gz
==> Caveats
Python modules have been installed and Homebrew's site-packages is not
in your Python sys.path, so you will not be able to import the modules
this formula installed. If you plan to develop with these modules,
please run:
mkdir -p /Users/adolfocamachogonzalez/Library/Python/2.7/lib/python/site-packages
echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> /Users/adolfocamachogonzalez/Library/Python/2.7/lib/python/site-packages/homebrew.pth
==> Summary
🍺 /usr/local/Cellar/tbb/2017_U7: 119 files, 1.9MB
==> Installing homebrew/science/opencv3 --with-contrib --with-tbb --with-ffmpeg
==> Downloading https://github.com/opencv/opencv/archive/3.2.0.tar.gz
==> Downloading from https://codeload.github.com/opencv/opencv/tar.gz/3.2.0
######################################################################## 100.0%
==> Downloading https://github.com/opencv/opencv_contrib/archive/3.2.0.tar.gz
==> Downloading from https://codeload.github.com/opencv/opencv_contrib/tar.gz/3.2.0
######################################################################## 100.0%
==> Downloading https://raw.githubusercontent.com/opencv/opencv_3rdparty/81a676001ca8075ada498
######################################################################## 100.0%
==> cmake .. -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG -DCMAKE_CXX_FLAGS_RELEASE=-DNDEBUG -DCMAKE_INSTA
==> make
==> make install
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local,
because opencv3 and opencv install many of the same files.
If you need to have this software first in your PATH run:
echo 'export PATH="/usr/local/opt/opencv3/bin:$PATH"' >> ~/.bash_profile
For compilers to find this software you may need to set:
LDFLAGS: -L/usr/local/opt/opencv3/lib
CPPFLAGS: -I/usr/local/opt/opencv3/include
For pkg-config to find this software you may need to set:
PKG_CONFIG_PATH: /usr/local/opt/opencv3/lib/pkgconfig
If you need Python to find bindings for this keg-only formula, run:
echo /usr/local/opt/opencv3/lib/python2.7/site-packages >> /usr/local/lib/python2.7/site-packages/opencv3.pth
mkdir -p /Users/adolfocamachogonzalez/Library/Python/2.7/lib/python/site-packages
echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> /Users/adolfocamachogonzalez/Library/Python/2.7/lib/python/site-packages/homebrew.pth
==> Summary
🍺 /usr/local/Cellar/opencv3/3.2.0: 498 files, 63.2MB, built in 6 minutes 58 seconds
After that when I tried to run code I got an error:
MacBook-Pro:~/Downloads/face_classification-master/src$ python video_test.py
Traceback (most recent call last):
File "video_test.py", line 1, in <module>
import cv2
ImportError: No module named cv2
So I really would like to appreciate support with this.

Answer 1

As the error message states, you are missing the python bindings for opencv.
When installing with homebrew you have to add --with-python or/and --with-python3 to your command.
brew install opencv3 --with-ffmpeg --with-tbb --with-contrib --with-python