I've just starting OpenCV tutorial. But previously I've installed it. The modules work properly, but PyCharm doesn't display any documentation of them and display a warning message:
Cannot find reference 'imread' in '__init__.py'
Note 1: I'm using Python 3.5.2 and version of the OpenCV is 3.2 (I checked it from python terminal)
Note 2: Python terminal (Inside the PyCharm IDE) displays doc.