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Frame Object

PostPosted: 03 Mar 2014, 10:36
by rbixler
Hello,

I'm working on developing some code for use with the Eye Tribe. It's a very fun product to play around with and the API has been relatively easy to use thus far. However, I'm unsure of where to find more detailed documentation of the data supplied by the eye tracker in the frame object.

Specifically, I would like to know more about the raw and avg gaze location measurements that are not tied to the left or right eye. What do these measure? Is it an average of the other two eyes?

Also, what exactly is the timestamp a measure of? is it the number of milliseconds since the server was started?

I appreciate any answers that anyone can give me!

Regards,

Re: Frame Object

PostPosted: 20 Mar 2014, 19:54
by Martin
The time stamp is since server started. So not all that useful besides measuring differences between samples. It's likely to be replaced with an absolute value, that easily can be interpreted on any OS.

Average gaze location is the average of both eyes if the have been detected and found to be valid, otherwise it takes the one that is valid (so nothing fancy there). Smoothed coordinates is a little more intricate involving a couple of custom algorithms.