使用opencv调用方法时，报异常：
cv.imshow('imshow', img)
cv2.error: OpenCV(3.4.1-dev) /home/yhc/workspace/tvm/opencv/opencv-src/modules/highgui/src/window.cpp:632: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function ‘cvShowImage’
使用，直接把国内源都贴上了：这个先把组件卸载了，再重新安装
pip uninstall opencv-contrib-python pip install -i https://pypi.tuna.tsinghua.edu.cn/simple/ opencv-contrib-python
当然之后会报这个错误：
Traceback (most recent call last):
File "D:/pycharm/ten-test/leidianModel/leidianMethod.py", line 5, in
import cv2 as cv
File "D:pythonlibsite-packagescv2__init__.py", line 9, in
from .cv2 import _registerMatType
ImportError: cannot import name '_registerMatType' from 'cv2.cv2' (D:pythonlibsite-packagescv2cv2.cp37-win_amd64.pyd)
通过重新
pip uninstall opencv-python-headless pip install -i https://pypi.tuna.tsinghua.edu.cn/simple/ opencv-python-headless
则可正常使用
如果以上操作还不行，就是opencv版本与组件不匹配，则重复第一步操作的卸载opencv-contrib-python操作，然后把opencv-python直接卸载了
pip uninstall opencv-python
再重新安装
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple/ opencv-python
安装完成后，再重新安装第一步，之后方法正常使用不报错
