Head tracking Just from a face is not so easy. I done it in proper cgi software and if you don't have track points, it's bad. I guess if you have a shiny young face, it will fail a lot more than not, unless you put some markers on it. Interpolating head rotation and position just from eyes won't work properly, you will need the extra points like nose and mouth. Same issue as in facetracknoir, no points to track, it will lose your head and keep snapping back or rotating randomly. Also it's very disorienting unless the motion on screen is smoothed a bit...
In short, this technology needs a lot of work to make it viable for the player.
In short, this technology needs a lot of work to make it viable for the player.