install opencv for python sudo apt update sudo apt install python3-opencv # may be done already depending on what you installed.
getting cv_bridge working with python 3 is less straightforward. you need to recompile cv_bridge locally.
A qt5 gui and opencv make it possible to make your own photobooth at home!
I am a Robotics Researcher, director of the IDEAlab, and Assistant Professor in the Ira A.