[sldev] Anyone here with OpenCV experience?

[Tigro Spottystripes]

What about using headtracking in push-to-nod mode? :P

in a few months LL will be reporting 1 million hours of tele-nodding
served :P

Jan Ciger escreveu:
> Moriz Gupte wrote:
> > The clip here provides some answer.
> > http://www.youtube.com/watch?v=nQDdgrgkqh4
> > Looking at it again, I had a (what was I thinking feeling-) wonder what
> > the kids must have felt going into that...anyway..
> > But yes, the eye tracker had an inbuilt servo mechanism that tracked the
> > head motion and moved the camera that was looking at the eye so that it
> > would always be at the center. Of course, it just provides *some*
> > opportunities for move the head a bit (you cannot go completely relaxed
> > and move your head wildly...we used some seats that constrained to some
> > extent head movement
>
> Eew, what a contraption! Well, still better that the idea my former
> students had - they wanted to build literally a head "vice" to keep the
> user's head still :-p It is a pity I do not have the proposed sketch
> scanned, that was some piece of usability engineering right there :-p
>
> > Right on. I am with you here. definitely gaze/head avatar navigation
> > control is *very likely going to cause more problems* unless u are
> > moving into the 'assistive technology' arena where the user has a
> > mobility impairment. There is some wiggle room for cam control *I
> > think*... I have some ideas...but just speculations at this stage. This
> > whole head/gaze based UI is really a toughie... we need to design an
> > intelligent enough system that would separate 'unconscious' reflexes
> > from 'intentional ones'... that's a hard prob.
>
> We have tried some of this before, but it is extremely tiring - there is
> no "offline" or "relaxed" posture. As the system keeps tracking you all
> the time, it will always end up in a mess which is very frustrating for
> the user. Even for assistive purposes there are better solutions than
> pure gaze tracking (breath sensors, tongue controllers, EEG, EMG sensors
> ...).
>
> But we are getting off-topic here, I think :)
>
> Regards,
>
> Jan
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