OpenCV导入错误Mac

Question

I'm trying to install OpenCV on my Mac (OS High Sierra), following the tutorial here with some minor modifications. For completeness, so far I have done the following:

sudo xcode-select --install
export PATH=/usr/local/bin:$PATH >> /.bashrc
source ~/.bashrc

brew install python python3
brew link python
brew link python3
brew postinstall python3

pip3 install virtualenv virtualenvwrapper
export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3 >> /.bashrc
export WORKON_HOME=$HOME/.virtualenvs PROJECT_HOME=$HOME/Develsource/usr/local/bin/virtualenvwrapper.sh >> /.bashrc
brew install opencv
echo /usr/local/opt/opencv/lib/python3.6/site-packages >> /usr/local/lib/python3.6/site-packages/opencv3.pth

This all seems to work fine. In the above I changed the tutorial's WORKON_HOME to virtualenvs rather than virtualenvsexport .

Then I go in to my virtual env:

mkvirtualenv cv-py3 -p python3
workon cv-py3
pip install numpy scipy scikit-image matplotlib scikit-learn
deactivate

Now I go back and link OpenCV:

cd ~/.virtualenvs/cv-py3/lib/python3.6/site-packages/
ln -s /usr/local/opt/opencv@3/lib/python3.6/site-packages/cv2.cpython-36m-darwin.so cv2.so

Now comes the problem:

workon cv-py3
python3
import cv2

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/Users/JosephBullock/.virtualenvs/cv-py3test/lib/python3.6/site-packages/cv2.so, 2): Library not loaded: /usr/local/opt/tesseract/lib/libtesseract.3.dylib
  Referenced from: /usr/local/Cellar/opencv/3.4.1_3/lib/libopencv_text.3.4.dylib
  Reason: image not found

It is here that I'm not sure what's gone wrong and what to do.

Answer 1

You have to install the library "tesseract". Execute the following command:

brew install tesseract