[sldev] Anyone here with OpenCV experience?

[Jan Ciger]

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Moriz Gupte wrote:
> And I think the Wii functioning perfectly out the box proved that such
> technologies may certainly become mainstream once variations due to
> environmental conditions are dealt with properly. I think calibration is
> the other thing that needs to be automatic (there are strategies for
> doing this), a possible algo for e.g. to automate eye tracker
> calibrations could use the info we know about reflex gaze behavior with
> respect to animated visual stimulus (this is an approach I once
> implemented because austistic kids were not expected to follow
> instructions before their gaze was tracked). 

I wonder - how did you deal with the issue of having to hold the head
still? Or did you track that as well? If the head moves, the whole gaze
information is not valid unless the movement is tracked as well.

We have done that before by combining a gaze tracker with a 6DOF
magnetic tracker, but that is neither a lowcost nor practical solution
for home user. But it was really robust, that is true.

However, using gaze to control anything (camera, avatar, whatever) is
extremely bad idea - it is really tiring and eye movement is not
something people can consciously control. Someone speaks next to you and
you turn your head reflexively - throwing the whole system for a loop.
At best it could be used to determine what you are looking at passively
and use that for either some kind of feedback, perceptually-enhanced
rendering or just to make the av look at the same thing to improve the
facial expressions for the others looking at you.

Regards,

Jan
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