The Eye Tribe

Re: pupil size

2016-09-10T09:44:11+02:00

pupil size- returned through pixels the matrix capturecamera / used https://www.leopardimaging.com/USB_3_3.html/

Statistics: Posted by skatabigpepperlo@gmail.com — 10 Sep 2016, 09:44

pupil size

2016-09-09T14:26:58+02:00

Hi,

I have a question about pupil size. I have read from the forum that pupil sizes are recorded as pixel.
But, I want to convert it to mm.
For the conversion is it enough to multiply it by 0.264583 ? (1 px = 0.264583 mm).
Or, is there another formula for calculation, if the person is 70 cm far from eye tracker and monitor.

Can you please help,
Many Thanks.

Statistics: Posted by skatagoncagmen — 09 Sep 2016, 14:26

Re: pupil size

2015-10-07T17:36:05+02:00

Ok
If distance from ET to monitor = 700 mm/ a scale for 1 mm? There is a formula unit conversion?

Statistics: Posted by skatabigpepperlo@gmail.com — 07 Oct 2015, 17:36

Re: pupil size

2015-10-07T13:22:36+02:00

Pixels. Conversion to mm depends on distance from device. That's why we call it a relative value (to the current position).

Statistics: Posted by skataMartin — 07 Oct 2015, 13:22

Re: pupil size

2015-10-05T21:26:51+02:00

Ok, I saw that information about pupil there, but what are they measured, what scale to mm pixel ??

Statistics: Posted by skatabigpepperlo@gmail.com — 05 Oct 2015, 21:26

pupil size

2015-10-05T21:16:26+02:00

What it means to write files in the api console - the pupilsize in two columns? It is the pupil size in pixels ?? or something else?

Statistics: Posted by skatabigpepperlo@gmail.com — 05 Oct 2015, 21:16