2 ms·

If you don't mind me jumping in here, since people with eye tracking experience seem to be quite scarce: is it viable these days to build a working accurate gaz

If you don't mind me jumping in here, since people with eye tracking experience seem to be quite scarce: is it viable these days to build a working accurate gaze tracker that would, say, work using just an iPad camera? No hardware whatsoever, just using the camera to somewhat accurately position a dot on the screen. Every tracker I've tried is close to absolute garbage when it comes to accuracy.

jacquesm 10y ago
YC invested in a company called 'GazeHawk', but they didn't make it (acquihire by facebook), the page is still up though. http://www.businessinsider.com/facebook-acquires-gazehawk-for-talent-2012-3?international=true&r=US&IR=T http://www.businessinsider.com/facebook-acquires-gazehawk-fo... http://www.gazehawk.com/ http://www.gazehawk.com/
- charlesdm 10y ago
  Yeah.. I've literally tried 20 solutions, and most can not detect gaze location well. Gazehawk included.
  - jacquesm 10y ago
    That may have been one of the reasons why they didn't make it. Eye tracking is tricky. I worked a bit with two guys developing a commercial eye tracker in the 80's, it was a pretty sophisticated optical set-up that combined the image being looked at and the image of the person looking using a 45 degree angle 50% mirror, that made the job considerably easier. One of the complicating factors was that eye movements have a lot of noise in them that our brain has become very adept at filtering out so what we think our eyes are doing can be quite different from what they're really doing.
Bartweiss 10y ago
Not easily. Samsung has something like this, which attempts the minimal task of "see if you're looking at the screen" to prevent dimming while you read. It's... not good. Not even passable, in my experience. That task should be achievable, but anything fancier - even positioning a dot - is probably still a tall order with that single camera.
- charlesdm 10y ago
  The hardware based IR solutions (e.g. Tobii) tend to work really well, though. Is it a matter of not having figured out yet how we could achieve similar results using just a webcam image?
  - mattkrause 10y ago
    The IR part is the key--webcams have IR-cut filters to keep the visible-spectrum picture from looking crappy.

jacquesm 10y ago

YC invested in a company called 'GazeHawk', but they didn't make it (acquihire by facebook), the page is still up though. http://www.businessinsider.com/facebook-acquires-gazehawk-for-talent-2012-3?international=true&r=US&IR=T http://www.businessinsider.com/facebook-acquires-gazehawk-fo... http://www.gazehawk.com/ http://www.gazehawk.com/

charlesdm 10y ago
Yeah.. I've literally tried 20 solutions, and most can not detect gaze location well. Gazehawk included.
- jacquesm 10y ago
  That may have been one of the reasons why they didn't make it. Eye tracking is tricky. I worked a bit with two guys developing a commercial eye tracker in the 80's, it was a pretty sophisticated optical set-up that combined the image being looked at and the image of the person looking using a 45 degree angle 50% mirror, that made the job considerably easier. One of the complicating factors was that eye movements have a lot of noise in them that our brain has become very adept at filtering out so what we think our eyes are doing can be quite different from what they're really doing.

Bartweiss 10y ago

Not easily. Samsung has something like this, which attempts the minimal task of "see if you're looking at the screen" to prevent dimming while you read. It's... not good. Not even passable, in my experience. That task should be achievable, but anything fancier - even positioning a dot - is probably still a tall order with that single camera.

charlesdm 10y ago
The hardware based IR solutions (e.g. Tobii) tend to work really well, though. Is it a matter of not having figured out yet how we could achieve similar results using just a webcam image?
- mattkrause 10y ago
  The IR part is the key--webcams have IR-cut filters to keep the visible-spectrum picture from looking crappy.