[visionlist] About help on eye-tracking of head free non-human primates
jeffrey.b.mulligan at nasa.gov
Tue Jul 17 11:15:54 -05 2018
On 7/17/18 4:45 AM, Gabriel Diaz wrote:
> /3. Are there multi-camera eye-tracker systems that we can set-up
> fromdifferent view points so that one or more can always have a clear
> viewof the animal?/
> Not that I've seen. I have discussed building something like this
> before with colleagues. That would be a feat of engineering and
> software development that requires a very firm grasp of multiview
> geometry. That is a multi-year project.
The SmartEye system uses multiple cameras. The have built-in head and
facial feature models that can often track a new subject reasonably
well, but for best performance the models need to be tuned for each
subject, which is a procedure that is done from within their software.
It might be possible to get this to work with a macaque, but you would
need to talk to their engineers.
I don't have much first-hand experience with this system, but gaze
accuracy is to a first approximation proportional to the number of
pixels devoted to the eye, and so any system where the camera captures a
large head box will necessarily suffer (unless you have a camera with a
LOT of pixels). So it depends on what your accuracy requirements are.
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