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Tagged: eye position data
- This topic has 3 replies, 2 voices, and was last updated 7 years ago by Alex [Tobii].
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- 25/04/2017 at 11:45 #6702daihuaguanParticipant
I want to get the distance of user form screen.
But I tested with different people and found that different values were obtained at the same distance. So,I suspect that the z value is not an absolute value.How do I get the true distance of different users?
27/04/2017 at 11:32 #6714Alex [Tobii]ParticipantHi! You can try to use the new low level api to get head coordinates in mm.
https://www.nuget.org/packages/Tobii.StreamEngine.Native/
https://www.nuget.org/packages/Tobii.StreamEngine/This is a low level API so please only use it if you know why you are doing it. Very little support is going to be provided.
It’s worth noting that position signal (especially Z coordinate) is not very precise, but may be suitable for some use cases.
28/04/2017 at 05:39 #6754daihuaguanParticipantI am sorry,when I was testing, I forgot to recalibrate everyone.
If re-calibration, then the z value of each person is basically accurate. However, compared with the actual value is always 100mm.28/04/2017 at 12:10 #6766Alex [Tobii]ParticipantHi! Nice that it worked for you.
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