conda环境中pip安装opencv
1，pip安装命令
pip install opencv-python
2，镜像源安装加快下载速度
pip install opencv-python -i https://pypi.douban.com/simple --trusted-host pypi.douban.com
3，验证是否安装成功（在conda环境中）
python
import cv2
没有报错则说明安装成功！！！
4，如果报以下错误：
ImportError: libGL.so.1: cannot open shared object file: No such file or directory
则pip安装opencv-python-headless：
pip install opencv-python-headless
镜像源安装：
pip install opencv-python-headless -i https://pypi.douban.com/simple --trusted-host pypi.douban.com