1、python如何调用opencv中的saliency模块

  如果你已经安装了opencv-python的库，但是调用cv2.saliency方法时出现了如下的报错：

module ‘cv2.saliency’ has no attribute ‘StaticSaliencySpectralResidual_create’

  这时你只需要卸载opencv-python库，安装opencv-contrib-python库即可。

2、vscode中连接Linux服务器返回图形化界面报错

  如果你的vscode项目代码中含有如下语句块：

# show the images
cv2.imshow("Image", image)
cv2.imshow("Output", saliencyMap)
cv2.imshow("Thresh", threshMap)
cv2.waitKey(0)

  并出现如下的报错：

qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin “xcb” in “/home/###/anaconda3/envs/###/pytorch/lib/python3.10/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.
已放弃 (核心已转储)

  这时你可以在你的本地安装Free版本的MobaXterm，同vscode一样，通过ssh连接上服务器，输入ip和服务器主机的用户名（log as），然后再在vscode的命令行输入：

export DISPLAY=localhost:10.0

  这样就会正常生成图片，不会报错了。