[visionlist] Online experiment runtime software including webcam-based eye tracking

Das, Mini mdas at Central.UH.EDU
Mon May 4 12:52:34 -04 2020

Hello all,
We recently tested the viability of using web based eye tracker and explored the Webgazer from Brown. We compared it to an older eye tracking system (SMI). The accuracy level was not as high using the web gazer, at least in our preliminary testing. I can dig up the numbers if anyone is interested. We are currently using a Tobii system.

I would love to see more response and discussions.


Mini Das, Ph.D.
Associate Professor of Physics
Associate Professor of Biomedical Engineering
University of Houston
Houston, TX 77204
Lab website: http://www.phys.uh.edu/~mdas
Email: mdas at uh.edu
Phone: 713-743-3539
From: visionlist <visionlist-bounces at visionscience.com> on behalf of Seoyoung Ahn <seoyoung.ahn at stonybrook.edu>
Sent: Monday, May 4, 2020 11:25 AM
To: visionlist at visionscience.com <visionlist at visionscience.com>
Subject: Re: [visionlist] Online experiment runtime software including webcam-based eye tracking

Hi Les,

This is Young from Eyecog lab at Stony Brook. We are studying gaze behavior during web viewing and we've recently set up webcam-based eye tracking experiments using GazeRecorder(https://gazerecorder.com/gazecloudapi/). From our experience, this tracker is slightly more stable than WebGazer.js from Brown, but still highly sensitive to light conditions or other constraints. We are about to compare the results from this this web tracker to the dataset we have collected with EyeLink, and also curious to hear more thoughts about what comparisons should be done to check the accuracy of this type of tracker.

Best wishes,

On Mon, May 4, 2020 at 11:55 AM Sauter Marian <marian.sauter at unibw.de<mailto:marian.sauter at unibw.de>> wrote:

Hi Les,

there's a Javascript library called WebGazer that should be implementable with various of the aforementioned solutions https://webgazer.cs.brown.edu/

Here's also a BRM review that might be helpful:


Best wishes,


~~~ New article ~~~
How to Get your Behavioral Experiment Online and Avoid Common Pitfalls. https://mdpi.com/699990

Marian Sauter, PhD
Research Associate
Bundeswehr University Munich
Department of Psychology - Chair of General Psychology
Bd. 161 / Room 1016
Werner-Heisenberg-Weg 39
85577 Neubiberg
marian.sauter at unibw.de<mailto:marian.sauter at unibw.de>
From: visionlist <visionlist-bounces at visionscience.com<mailto:visionlist-bounces at visionscience.com>> on behalf of Lester Loschky <loschky at ksu.edu<mailto:loschky at ksu.edu>>
Sent: Sunday, May 3, 2020 20:32
To: visionlist at visionscience.com<mailto:visionlist at visionscience.com>; cvnet
Subject: [visionlist] Online experiment runtime software including webcam-based eye tracking

Hi Everybody,

What are the available options for webcam-based eye tracking experiments at present?  I understand that Tobii has a paid service that does that.  And I saw that Labvanced says that it can do webcam-based eye tracking.  Does PsychoPy have that functionality included in it yet?  Are there other available options?  Are there any comparisons of the accuracy and latency of the various available options?  What are other meaningful comparisons among the various available options?

Thanks in advance for replies.

Stay safe!


Lester Loschky
Associate Director, Cognitive and Neurobiological Approaches to Plasticity Center
Department of Psychological Sciences
471 Bluemont Hall
1114 Mid-Campus Dr North
Kansas State University
Manhattan, KS  66506-5302
email: loschky at ksu.edu<mailto:loschky at ksu.edu>
research page: https://www.k-state.edu/psych/research/loschkylester.html
lab page: http://www.k-state.edu/psych/vcl/index.html
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