Webgazer.js webcam eye tracking on the browser
webgazer.cs.brown.edu
Webgazer.js webcam eye tracking on the browser
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Re: Webgazer.js webcam eye tracking on the browser
#2Disclaimer, I am the primary engineer of a commercial eye tracking system.
Tools like these popup every now and then are a nice tool for rough estimation of gaze. Fixation tracking is a large complicated issue that usually requires some sort of calibration to get more precise results. By sidestepping the calibration problem, much higher subject compliance can be achieved since you don't have a grad student barking confusing order at you. The downside to this is the noise you see in the tracking results. For those interested a product that produces similar results is pupil labs ambient gaze tracking "Core" research headset[0]. [0] https://pupil-labs.com/products/core/
Re: Webgazer.js webcam eye tracking on the browser
#3Whoa. I have a strange mix of reactions to this. It's impressive, and interesting, and worthwhile, slightly creepy, and potentially hugely useful for a11y, democratizing cutting-edge HCI, AR, gaming, etc etc. Surprised it's not getting more attention!
Re: Webgazer.js webcam eye tracking on the browser
#4Whoa. I have a strange mix of reactions to this. It's impressive, and interesting, and worthwhile, slightly creepy, and potentially hugely useful for a11y, democratizing cutting-edge HCI, AR, gaming, etc etc. Surprised it's not getting more attention!
One good thing about webcam access on the web is that browsers require explicit access by the user and browser tabs clearly indicate when a tab is recording with either the mic or camera.
Re: Webgazer.js webcam eye tracking on the browser
#5Disclaimer, I am the primary engineer of a commercial eye tracking system. Tools like these popup every now and then are a nice tool for rough estimation of gaze. Fixation tracking is a large complicated issue that usually requires some sort of calibration to get more precise results. By sidestepping the calibration problem, much higher subject compliance can be achieved since you don't have a grad student barking co…
In your estimation, how far away are we from eye-tracking software being able to detect the start of a microsaccade, estimate where the gaze is moving toward, and draw new contents on the screen there before the gaze even reaches that point? I would think that by "hacking" into human brain "vulnerabilities" like saccadic masking and chronostasis, such software could potentially yield seriously trippy and mind-altering results!
Re: Webgazer.js webcam eye tracking on the browser
#6Whoa. I have a strange mix of reactions to this. It's impressive, and interesting, and worthwhile, slightly creepy, and potentially hugely useful for a11y, democratizing cutting-edge HCI, AR, gaming, etc etc. Surprised it's not getting more attention!
Maybe because it's been around for a couple of years?
Re: Webgazer.js webcam eye tracking on the browser
#7Disclaimer, I am the primary engineer of a commercial eye tracking system. Tools like these popup every now and then are a nice tool for rough estimation of gaze. Fixation tracking is a large complicated issue that usually requires some sort of calibration to get more precise results. By sidestepping the calibration problem, much higher subject compliance can be achieved since you don't have a grad student barking co…
In your estimation, how far away are we from eye-tracking software being able to detect the start of a microsaccade, estimate where the gaze is moving toward, and draw new contents on the screen there before the gaze even reaches that point? I would think that by "hacking" into human brain "vulnerabilities" like saccadic masking and chronostasis, such software could potentially yield seriously trippy and mind-alterin…
"How far away are we" is a strange question to ask about something we already do. You can read about this technique being used to investigate how we read here: https://docs.microsoft.com/en-us/typography/develop/word-rec...
Note the citation to a study that used the technique in 1975.
Re: Webgazer.js webcam eye tracking on the browser
#8I tried my best on the calibration demo page in Safari and consistently get a 0% accuracy result. It calibrates sort of ok in Firefox. I guess this is heavily browser dependent? But why?
Re: Webgazer.js webcam eye tracking on the browser
#9Disclaimer, I am the primary engineer of a commercial eye tracking system. Tools like these popup every now and then are a nice tool for rough estimation of gaze. Fixation tracking is a large complicated issue that usually requires some sort of calibration to get more precise results. By sidestepping the calibration problem, much higher subject compliance can be achieved since you don't have a grad student barking co…
Author here (I didn't use Show HN because it's a larger collaborative project). Yes this is basically a tradeoff between accuracy and flexibility+accessibility.
For usability testing, physical eye trackers have to be used one person at a time (no simultaneous use), use an experimenter's time to schedule and administer, can only be used for a short period, and only work with local participants. But yes they will probably always have better accuracy, and detect saccades/fixations better which are also great for psychology studies.
The other thing is if you want to make a consumer application (like browser game, or accessibility mode), then it's more practical to have people just consent to having their webcam turned on, than to go out and buy an eye tracker.
Re: Webgazer.js webcam eye tracking on the browser
#10I tried my best on the calibration demo page in Safari and consistently get a 0% accuracy result. It calibrates sort of ok in Firefox. I guess this is heavily browser dependent? But why?
Hmm, not sure -- do you see the gaze dot when you're looking at the center circle?