EyeX capabilities (Gaze detection and interpolation)

[Gregg]

Hi all,

I’m using the EyeX eye-tracker for a university project.
I tried to test how well device is at tracking gaze position outside the calibration screen – I’m using a laptop – and thus interpolating the data.
Unfortunately the results were quite poor as most of the gaze outside the screen is tracked either to the edge of the monitor or, even worse, to some random location inside the screen.
Is it a hardware limit of the eye-tracker or there is some way to work around it – improve its performance?

I also wondered whether this particular eye-tracker will ever offer the capability of tracking single eye gaze independently, so to estimate the gaze position in 3D?

Thank you in advance for any answer/tip!

[Jenny [Tobii]]

Hi Gregg,

That behavior does not seem right at all. The Gaze Point data stream should provide you with coordinates that lie also outside the edge of the monitor, and with good accuracy as long as you stay within an area corresponding to the maximum supported screen size.

Have you tried to run the MinimalGazeDataStream sample included in the SDK package and compared that the numbers there correspond to the numbers you get in your test application?

[Gregg]

Hi Jenny,

Thank you for your answer.
I’ve tried again with MinimalGazeDataStream and my own code and achieved some interpolation, so that’s great!
This should be turn up to be really useful in my application.

Do you know any news about the single eye gaze tracking on tobii EyeX? Is it ever going to be implemented?

[Author]

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