opencv官方下载的扩展包,opencv_contrib-3.4.8
Repository for OpenCV's extra modules
This repository is intended for development of so-called "extra" modules,
contributed functionality. New modules quite often do not have stable API,
and they are not well-t
warning信息
```bash
CMake Warning at cmake/OpenCVDownload.cmake:202 (message):
IPPICV: Download failed: 7;"Couldn't connect to server"
For details please refer to the download log file:
/usr/local/opencv-3.4.8/build/CMakeDownloadLog.txt
Call