Comments on: Roman Bednarik, Ph.D. http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/ Blog of P. Clint Rogers, PhD: Culture, Training, and Technology Specialist Thu, 09 Sep 2010 17:39:17 +0000 http://wordpress.org/?v=2.1.3 By: Joseph http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1272 Joseph Sun, 16 Dec 2007 23:04:22 +0000 http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1272 So... now I want to know more about the eye-tracking research. There's a chance that I'll get into that area of study. I've wondered if there exists any eye-tracking technology capable of detecting depth of field along with focal angle. And is there a good way to track irregular eyes? It seems like only 2/3 of the data were usable for the last study I heard of because of irregularities in eyes. So… now I want to know more about the eye-tracking research. There’s a chance that I’ll get into that area of study. I’ve wondered if there exists any eye-tracking technology capable of detecting depth of field along with focal angle. And is there a good way to track irregular eyes? It seems like only 2/3 of the data were usable for the last study I heard of because of irregularities in eyes.

]]> By: Clint http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1281 Clint Mon, 17 Dec 2007 06:06:02 +0000 http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1281 Good questions, Joseph. Now that I'm sure Roman will have so much free time on his hands :) I bet he can answer them for you. If he doesn't see this message, then I'll email him and ask him to get in touch with you. Good questions, Joseph. Now that I’m sure Roman will have so much free time on his hands :) I bet he can answer them for you. If he doesn’t see this message, then I’ll email him and ask him to get in touch with you.

]]> By: roman http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1309 roman Thu, 20 Dec 2007 12:48:59 +0000 http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1309 Joseph, I am not sure what you mean by irregular eyes. The most common reasons why an eye-tracker won't capture somebody's eyes are 1) eye-glasses and contact lenses, 2) head movements, 3) occluded iris (e.g. droopy eyelids). As for the depth-of-field, I have not seen such a system yet. There is some research in tracking eye-movements in 3D environments, but not using dof. Eye-tracking, as far as I know, is used in some VR systems to emulate dof effect. Joseph, I am not sure what you mean by irregular eyes. The most common reasons why an eye-tracker won’t capture somebody’s eyes are 1) eye-glasses and contact lenses, 2) head movements, 3) occluded iris (e.g. droopy eyelids).

As for the depth-of-field, I have not seen such a system yet. There is some research in tracking eye-movements in 3D environments, but not using dof. Eye-tracking, as far as I know, is used in some VR systems to emulate dof effect.

]]> By: Joseph http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1313 Joseph Fri, 21 Dec 2007 00:43:18 +0000 http://www.clintrogersonline.com/blog/2007/12/15/roman-bednarik-phd/#comment-1313 Hm. Thanks for addressing my questions, Roman. Perhaps I mis-remember, but I thought that an irregularly shaped pupil or retina could throw off eye-tracking if the system relies on a low-power infrared light reflecting off the retina in a circular pattern. It makes sense that one can infer the depth of field by finding the distance to intersection of both eyes' orientation. I wonder if actually detecting things like aperture size and lens flex would provide useful information. Hm. Thanks for addressing my questions, Roman. Perhaps I mis-remember, but I thought that an irregularly shaped pupil or retina could throw off eye-tracking if the system relies on a low-power infrared light reflecting off the retina in a circular pattern.

It makes sense that one can infer the depth of field by finding the distance to intersection of both eyes’ orientation. I wonder if actually detecting things like aperture size and lens flex would provide useful information.

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