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LiveTrack AV for fMRI installation manual
The images in the near infra-red do look quite "soft" compared to visible light images. This is
quite normal.
Once focus has been achieved (by default the pupil fitting video overlay is on), a white ellipse
should be shown over the pupil iris boundary. If set, there will also be a grey cross on the glint.
These indicate that tracking has successfully locked on.
Example of a good image with pupil fit and glint overlay (ellipse and crosshair):
Example of a bad image with missing pupil fit and glint overlay (reason: camera located too far
from the eye):
Example of a bad image with bad pupil fit (reason: camera located too far from the eye):
Version R02
13
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