先大概说一下我的情况：
系统Ubuntu18.04
想用Python，所以直接装了Anaconda，Pycharm，然后用conda install …这种命令开始安装各种包。
装完了opencv之后读取图片有问题
error: -------src-dir-------/opencv-2.4.10/modules/highgui/src/window.cpp:501: error: (-2) 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.
应该把安装时命令换成
conda install -c menpo opencv3
一定要用 menpo,别的就出错了。
具体步骤，先卸载opencv，再重新安装 conda remove opencv conda install -c menpo opencv
pip install --upgrade pip pip install opencv-contrib-python
