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We've had excellent success with your AEye based eye trackers.

Recently we found a setup where it wasn't tracking the left eye well. We took a picture of the live view to try to diagnosis it but couldn't see any major problems with focus, or visibility of the white reflections.

What is going on?

asked 18 Jun '15, 15:42

phyatt's gravatar image

phyatt ♦♦
15792056
accept rate: 8%


This could be a settings or positioning issue. When the tracker isn't tracking but the image looks good, then the settings may need to be adjusted. For example, If the image looks good, but it is not tracking then it could be that the user distance or lens size settings are not correct. Setting them correctly will more than likely solve the issue.

Most tracking related problems have to do with a discrepancy between what the settings are set to and the physical environment. These dependencies can many times be solved by the user changing position so they are at the correct distance indicated in the settings. Or the settings can be modified to reflect the real world.

link

answered 22 Jun '15, 10:16

chinton's gravatar image

chinton ♦♦
1514
accept rate: 75%

It is likely to be related to the environment's lighting.

Lighting

A window with lots of sunlight can change the brightness on one side of the face more than the other. This uneven lighting can make the contrast for one pupil very different from the other.

The auto gain optimizes for the contrast on the face, but may struggle in this case.

Another possibility is that some IR LEDs went out on one side and you are getting uneven lighting on the face.

Solution

The immediate fix for this is to try adjusting manual gain to brighten the iris's.

If indeed it is an IR LED that has gone out, please contact EyeTech support about an RMA to get it fixed.

link

answered 18 Jun '15, 15:46

phyatt's gravatar image

phyatt ♦♦
15792056
accept rate: 8%

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Asked: 18 Jun '15, 15:42

Seen: 1,101 times

Last updated: 22 Jun '15, 10:16

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