Getting 2D gazepoints

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John Williams

• July 19, 2018 20:43

Hello,

 

I am currently working on a project where I have disabled the orientation and the position of the FOVE and have the user facing a wall. I want to get the X,Y coordinates for each eye of where the user is looking on the wall. I am not sure what the best way to do this would be which is why I am asking for some advice. Should I use the unity data collector to get their gaze vectors and do some trigonometry on these values to get the points? I read raycasting would be a good idea here, but I am not too sure how to do this with the eyetracking, could anyone guide me in a direction they think is best? Thanks!

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  jeremy

  • July 25, 2018 01:36

  Hey John,

   

  If you're making a heat-map kinda thing then your proposed suggestion is probably the easiest. (Unity data collector + Trig)

  Ray-casting is great but it will be difficult to make it performant.

  How much of a margin of error are you willing to accept?

   

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  Enrico Migliorini

  • September 17, 2018 15:01
  • Edited

  Really sorry for necro-ing but in case it helps someone: the Unity function Camera.WorldToScreenPoint() does just that; you can get the point by getting the eye ray and then using Ray.GetPoint().

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