The Eye Tribe

Re: Unit of Pupil Size and Raw Coordinate

2015-10-15T10:58:52+02:00

Syams,

I think it could be helpful to take a look at the TrackBox component which we have open sourced.

The coordinates for the left/right pupil center is normalized to 0-1 range for X & Y axis.

Statistics: Posted by skataMartin — 15 Oct 2015, 10:58

Re: Unit of Pupil Size and Raw Coordinate

2015-10-01T03:54:41+02:00

Hi Anders

Actually, i try to achieve the value of left and right eyes in world coordinate or The X- and Y-coordinates of the right and left eye pupils in the camera image, as a fraction of the camera image size. Is there any possiblity to achieve these value using the eye tribe api?

Thanks
Syams

Statistics: Posted by skataSyamsul — 01 Oct 2015, 03:54

Re: Unit of Pupil Size and Raw Coordinate

2015-09-30T13:29:30+02:00

Hi Sam

The EyeTribe API do not expose camera sensor resolution nor camera pupil coordinates.

Could you give me some description about unit of the "Gazedata.leftEye.pupilSize" and "Gazedata.leftEye.rawCoordinates.x", are pixel or mm?

The unit of pupil size is camera space pixels and the unit of gaze coordinates are screen space pixels. Pupil coordinates are relative screen space.

What are you trying to achieve?

BR,
Anders

Statistics: Posted by skataAnders — 30 Sep 2015, 13:29

Re: Unit of Pupil Size and Raw Coordinate

2015-09-12T02:30:21+02:00

Hi Martin, thank you for your respon. Let me ask one more questions, is eye tribe api provide function to get Y and X pupil coordinates in camera (eye tracker) image? and how about camera eye tracker resolution?

Thanks
Syams

Statistics: Posted by skataSyamsul — 12 Sep 2015, 02:30

Re: Unit of Pupil Size and Raw Coordinate

2015-09-03T17:21:18+02:00

Hi Syams,

PupilSize is camera sensor pixels (not millimeters).

RawCoordinates.x is screen pixels where 0,0 is top left.

Statistics: Posted by skataMartin — 03 Sep 2015, 17:21

Unit of Pupil Size and Raw Coordinate

2015-09-03T04:40:30+02:00

Dear Martin

I need some values of the pupil size and pupil coordinates that I will input it to some formula, but right now i am still difficult to know about it's unit. Could you give me some description about unit of the "Gazedata.leftEye.pupilSize" and "Gazedata.leftEye.rawCoordinates.x", are pixel or mm?

thanks
Syams

Statistics: Posted by skataSyamsul — 03 Sep 2015, 04:40