<div dir="auto"><div>Hi,<div dir="auto">   I'm forwarding this mail on behalf of Dr Goossens.</div><div dir="auto"><br></div><div dir="auto">Best,</div><div dir="auto">Harish</div><br><br><div class="gmail_quote"><div dir="ltr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">Jeroen Goossens</strong> <span dir="ltr"><<a href="mailto:J.Goossens@science.ru.nl">J.Goossens@science.ru.nl</a>></span><br>Date: Sun, 15 Jul 2018, 01:43<br>Subject: Re: [visionlist] About help on eye-tracking of head free non-human primates<br>To: Harish Katti <<a href="mailto:harish2006@gmail.com">harish2006@gmail.com</a>><br></div><br><br><div dir="auto">Hi Harish,<div>My response somehow didn’t make it to the visionlist. Perhaps you can post it? Others might be interested in this system too.<br>Cheers,</div><div>Jeroen</div><div><br><div id="m_8916944498343632186AppleMailSignature">Sent from my iPhone</div><div><br>On 14 Jul 2018, at 19:52, Harish Katti <<a href="mailto:harish2006@gmail.com" target="_blank" rel="noreferrer">harish2006@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div>




<div dir="auto">Dear Dr Goossens,
<div dir="auto">   Thanks for the prompt response. We will try out your system.</div>
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<div dir="auto">Best,</div>
<div dir="auto">Harish</div>
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<div dir="ltr">On Sat, 14 Jul 2018, 22:12 Goossens, <<a href="mailto:J.Goossens@donders.ru.nl" target="_blank" rel="noreferrer">J.Goossens@donders.ru.nl</a>> wrote:<br>
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<div>Dear Harris,
<div><br>
<div>We recently developed a two camera system that might fit you needs. See:<br>
<div style="text-indent:0px"><span style="background-color:rgba(255,255,255,0)"><span>Barsingerhorn, A.D., Boonstra, F.N., Goossen, J. </span><span>, Development and validation of a high-speed stereoscopic </span><span class="m_8916944498343632186m_-4737367142705424981SpellE">eyetracker</span><span>. </span><span class="m_8916944498343632186m_-4737367142705424981SpellE"><i>Beh</i></span><i>.
 Res. Meth.</i><span>, 2018. </span><span class="m_8916944498343632186m_-4737367142705424981SpellE">doi</span><span>: 10.3758/s13428-018-1026-7. </span></span></div>
<div style="text-indent:0px"><span style="background-color:rgba(255,255,255,0)"><br>
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<div style="text-indent:0px"><span style="background-color:rgba(255,255,255,0)">It is not yet tested on macaque, but with some tweaking of the software, I think it should work.
</span><span style="background-color:rgba(255,255,255,0)">The software is available on our GitHub repository: </span><a class="m_8916944498343632186m_-4737367142705424981nova-e-link m_8916944498343632186m_-4737367142705424981nova-e-link--color-inherit m_8916944498343632186m_-4737367142705424981nova-e-link--theme-decorated" href="https://www.researchgate.net/deref/https%3A%2F%2Fgithub.com%2FDonders-Institute%2FStereo-gaze-tracking" rel="noopener noreferrer noreferrer" style="background-color:rgba(255,255,255,0);outline:none;padding:0px;margin:0px;border:0px;background-image:none;display:inline" target="_blank">https://github.com/Donders-Institute/Stereo-gaze-tracking</a></div>
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<div style="text-indent:0px">If you have any further questions about the implementation, we ‘d be happy to help. </div>
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<div>Best,</div>
<div>Jeroen</div>
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<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span style="background-color:rgba(255,255,255,0)">--<br>
H.H.L.M. (Jeroen) Goossens, PhD<u></u><u></u></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span lang="EN-US" style="background-color:rgba(255,255,255,0)">Dept. Cognitive Neuroscience (205), Biophysics division,<br>
Donders Institute for Brain, Cognition and Behaviour,<u></u><u></u></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span lang="EN-US" style="background-color:rgba(255,255,255,0)">Radboud University Nijmegen Medical Centre<br>
<br>
Office 02.274 (route 200) Trigon<br>
<a dir="ltr" rel="noreferrer noreferrer">Kapittelweg 29, 6525 EN Nijmegen</a><br>
<a dir="ltr" rel="noreferrer noreferrer">The Netherlands</a><u></u><u></u></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span lang="EN-US" style="background-color:rgba(255,255,255,0)"> </span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span lang="EN-US" style="background-color:rgba(255,255,255,0)">T: <a href="tel:+31%2024%2036%2055645" dir="ltr" rel="noreferrer noreferrer" target="_blank">+31 24 36 55645</a><u></u><u></u></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span lang="EN-US" style="background-color:rgba(255,255,255,0)">E: <a href="mailto:J.Goossens@donders.ru.nl" rel="noreferrer noreferrer" target="_blank">J.Goossens@donders.ru.nl</a><u></u><u></u></span></p>
<p class="MsoNormal" style="margin:0cm 0cm 0.0001pt"><span lang="EN-US" style="background-color:rgba(255,255,255,0)"><a href="http://www.mbfys.ru.nl/~goossens" rel="noreferrer noreferrer" target="_blank">http://www.mbfys.ru.nl/~goossens</a></span></p>
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<div><br>
On 14 Jul 2018, at 08:30, Harish Katti <<a href="mailto:harish2006@gmail.com" rel="noreferrer noreferrer" target="_blank">harish2006@gmail.com</a>> wrote:<br>
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<div dir="ltr"><font color="#000000"><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Dear all</span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">      I am Harish, a post-doctoral fellow
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">in Dr SP Arun's experimental vision group at the Centre for Neuroscience, Indian Institute of Science. I'm posting this to get feedback
 from researchers who have<span> </span></span><span class="m_8916944498343632186m_-4737367142705424981gmail-im" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">tried automated eye-gaze/head-pose/body-pose tracking of freely moving<span> </span>non-human
 primates.<br>
<br>
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">In our lab we are trying to setup eye tracking in monkeys without any<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">head restraints. Our plan is to have a behavioural arena where the<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span class="m_8916944498343632186m_-4737367142705424981gmail-im" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">animal is not head-fixed and can come up to a touch screen and perform<span> </span><br>
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">simple tasks in return for juice rewards. Since the animals are not<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span class="m_8916944498343632186m_-4737367142705424981gmail-im" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">head-fixed, the eye-tracking needs to be done in a manner that can<span> </span><br>
handle change in body and head pose. We have been evaluating a few<span> </span><br>
commercial eye-tracking systems but find that the trackers have<span> </span><br>
difficulty in finding the face/eyes. It will be nice to have your inputs<span> </span><br>
on the following issues,<br>
<br>
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">1. Is there a good eye tracking system that already has macaque face<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">appearance templates bulit in?</span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">2. Are there any novel ways of placing  the screen and tracker that<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">result in better eye-tracking? We have tried various ways of placing<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span class="m_8916944498343632186m_-4737367142705424981gmail-im" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">trackers below the screen and at various distances from the animal.<br>
<br>
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">3. Are there multi-camera eye-tracker systems that we can set-up from<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span class="m_8916944498343632186m_-4737367142705424981gmail-im" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">different view points so that one or more can always have a clear view<span> </span><br>
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">of the animal?</span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">4. Do these systems have hardware input for behavioral event markers and<span> </span></span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span class="m_8916944498343632186m_-4737367142705424981gmail-im" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">analog/digital outputs of eye-gaze data so that we can sync it with our<span> </span><br>
</span><span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">neural data acquisition.</span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">best,</span><br style="font-size:small;text-decoration-style:initial;text-decoration-color:initial">
<span style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Harish</span></font><br>
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