A little anecdote: when preparing for The New Current (2019) I had misplaced my code and started editing in my older codebase. It is a strange sibling to with the sustaining_gazes repo. It needed a lot of 'fixes' that were unnecessary for the OpenFace based system, and got many changes that were on my TODO list after Route du Nord...
Translates headposes of viewers into a heat map.
Head-pose detection adapted from 1