出现错误：if you are on Ubuntu or Debian ,install libgtk2.0-dev and pkg-config,then re-run cmake or configure script in function ‘cvNamedWindow’
解决：重新用pip安装opencv-contrib版本
pip uninstall opencv-python pip install opencv-contrib-python
opencv python 下 ‘cvNamedWindow’报错,contirb模块
原文：https://www.cnblogs.com/pine-apple/p/13170003.html