参考链接：https://blog.csdn.net/yuanlulu/article/details/79017116
从x86_64 + ubuntu18.04 + python3.5中import cv2(opencv4.1), 遇到以下错误：
ImportError: libSM.so.6: cannot open shared object file: No such file or directory ImportError: libXrender.so.1: cannot open shared object file: No such file or directory ImportError: libXext.so.6: cannot open shared object file: No such file or directory
解决方案：
apt-get update apt-get install libsm6 apt-get install libxrender1 apt-get install libxext-dev
原文：https://www.cnblogs.com/liuwenhua/p/11539688.html