Opencv can be installed online with one click using commands, but various problems often occur due to network speed and specified version. In this case, downloading the installation package first and then installing it offline is a more stable option.
1. First click here to enter the offline installation package interface and select the appropriate installation package file.
2. Then enter the command: pip install + installation package path to quickly complete the installation.
Offline installation download link: https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple/opencv-python/