cv2.imread()读取图片在Pycharm报错

刚开始错误是：

22 = 0.84530 at 0.00 19.87 444.26 x 381.21

qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/home/pppp/anaconda3/envs/torch18/lib/python3.8/site-packages/cv2/qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb, eglfs, minimal, minimalegl, offscreen, vnc.

Aborted (core dumped)

使用cv2.imread(img_path)时发现上述错误。亲测有效：

1.卸载现在版本的opencv-python

pip  uninstall opencv-python

2.安装旧版本opencv-python

pip install opencv-python==4.1.2.30

然后出现新的错误：

 1.在ssh远端的linux服务器上

echo $DISPLAY

比如，显示结果为localhost:11.0，那么到下一步。

2.回到pycharm上，在RUN->Edit Configurations里的环境变量加上变量DISPLAY，确认即可。