wget https://github.com/yqlbu/jetson-packages-family/raw/master/OpenCV/install_opencv4.1.1_jetson.sh

purge old-version

$ sudo apt-get purge libopencv*# install$ sudo bash <(wget -qO- https://github.com/yqlbu/jetson-packages-family/raw/master/OpenCV/install_opencv4.1.1_jetson.sh)