background:
Python and Opencv using application development, you need to be deployed on Windows Server, so you need to install Opencv.
The pit had been lying:
1. Using source installation;
2. 利用 pip install opencv-python；
3. 利用 conda install opencv；
The above method are given: ImportError: DLL load failed.
Solutions available online also tried, invalid, such as: download missing DLL checking tool, fill in missing DLL or after an error.
The final program:
Any program installed opencv-python, then select the "My Computer" - "Properties" - "Management" - "Add Roles and Features" - check the "desktop experience", click on the installation, you can restart after installation.
Results are as follows:
The last sentence:
Linux server or use it!