python - OpenCV: AttributeError: module 'cv2' has no attribute 'face'

Question

I am creating a face recognition system using Python and OpenCV on these versions:

• Python 3.6.2 :: Anaconda custom (64-bit)
• Anaconda 4.3.23
• OpenCV 3.3.0

When I try to train the face recognizer:

face_recognizer = cv2.face.createLBPHFaceRecognizer()

I get this error:

AttributeError: module 'cv2' has no attribute 'face'

Update:

I've tried to do this:

pip install opencv_python?3.3.0+contrib?cp36?cp36m?win_amd64.whl

Also:

conda install -c menpo opencv3=3.3.0

And I still have the error.

Answer 1

The Menpo project does not have an installer for OpenCV 3.3. The Menpo project is up to 3.1 on macOS and Windows, and 3.2 on Linux. See the Anaconda package for that description and also the list of files for the installer versions. Actually, you can check out the GitHub repo for Menpo's OpenCV3 build and grab the files yourself. You can change the build files to suit your system if needed.

I'm not sure if your pip attempt includes a typo or not---the correct PyPI package wheel file with the contrib module is opencv_contrib_python not opencv_python+contrib, as shown at PyPI. Note that if you're not using Windows the GUI features of OpenCV will not work with the pip installer, including imshow() and other similar features.

You'd be better served just removing and reinstalling fresh with the contrib modules instead of trying to build them in later.