Opncv-python ImportError: DLL lo

ImportError: DLL load failed: 找不到指定的模块。

环境Windows server 2012 r2 datacenter

原因服务器环境，缺少某些UI组件，所以要装服务器特定版本。

解决方案：

b. Packages for server (headless) environments

These packages do not contain any GUI functionality. They are smaller and suitable for more restricted environments.

run pip install opencv-python-headless if you need only main modules

run pip install opencv-contrib-python-headless if you need both main and contrib modules (check extra modules listing from OpenCV documentation)

参考：https://pypi.org/project/opencvz-contrib-python/