From gkim@postech.ac.kr Mon Jun 14 02:04:14 1999 Received: from burdell.cc.gatech.edu (root@burdell.cc.gatech.edu [130.207.3.207]) by lennon.cc.gatech.edu (8.9.1/8.9.1) with ESMTP id CAA15075 for ; Mon, 14 Jun 1999 02:04:11 -0400 (EDT) Received: from asbestos.hitl.washington.edu (hitl-new.hitl.washington.edu [128.95.73.60]) by burdell.cc.gatech.edu (8.9.1/8.9.1) with ESMTP id CAA01104; Mon, 14 Jun 1999 02:04:05 -0400 (EDT) Received: from mx1.postech.ac.kr (mx1.postech.ac.kr [141.223.1.1]) by asbestos.hitl.washington.edu (8.9.3/8.9.3) with ESMTP id XAA04250 for <3d-ui@hitl.washington.edu>; Sun, 13 Jun 1999 23:02:21 -0700 (PDT) Received: from postech.ac.kr (cvpc10.postech.ac.kr [141.223.94.160]) by mx1.postech.ac.kr (8.9.1a-H1/8.9.1) with ESMTP id PAA13450; Mon, 14 Jun 1999 15:02:00 +0900 (KST) Message-ID: <3764988E.ECB7F3C5@postech.ac.kr> Date: Mon, 14 Jun 1999 14:52:14 +0900 From: "G. Jounghyun Kim" X-Mailer: Mozilla 4.5 [en] (Win98; I) X-Accept-Language: en,ko MIME-Version: 1.0 To: Anders Backman CC: 3d-ui@hitl.washington.edu Subject: Re: Comments on Eye Tracking Technologies References: <000201beb627$f2a65780$ca29ef82@mickey.cs.umu.se> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit Status: RO Check out www.aureal.com and a3d.com ... Gerry Kim, POSTECH. Anders Backman wrote: > Maybe this is slightly outside this forum, but you are suche intelligent > guys so I cant help my self!!! ;-) > > Spatial Sound!! > > A couple of years ago there was CRE, Crystal River Engineering, now there is > nothing ? > > Lake Huron Has a pretty advanced (read expensive) sound system. > Is there anything more out there? > > VSS - A sound server from NCSA (not all that good). > DirectSound - Microsoft (well, portability?). > > We would like a system that can simulate spatial sound in headphones as well > in 4-8 channels. > Doppler, reverb, ... > > Is it possible to do this in software? > > Any hints? > > ________________________________________________________________ > Anders Backman Email: andersb@cs.umu.se > HPC2N/CUT Phone: +46 (0)90-786 9936 > Umea university Cellular: +46 (0)70-392 64 67 > S-901 87 UMEA SWEDEN Fax: +46 90-786 6126 > http://www.cs.umu.se/~andersb > > > -----Original Message----- > > From: Matt Conway [mailto:mconway@microsoft.com] > > Sent: den 12 juni 1999 02:34 > > To: 'zhai@almaden.ibm.com' > > Cc: 3d-ui@hitl.washington.edu > > Subject: RE: Comments on Eye Tracking Technologies > > > > > > Shumin, > > > > Thanks for the heads-up about ASL. > > > > Basically, what I'm looking for is > > a tracker I can use to know how people's eyes are moving > > when they are reading a book. If I could detect saccades and fixations > > with timestamps, that would probably be good enough. It might be > > the case > > that eye trackers aren't at all the thing to use, that I could > > get what I want out of electrodes measuring muscle contractions. > > > > > > any thoughts? > > > > > > -----Original Message----- > > From: zhai@almaden.ibm.com [mailto:zhai@almaden.ibm.com] > > Sent: Friday, June 11, 1999 11:55 AM > > To: Matt Conway > > Cc: 3d-ui@hitl.washington.edu > > Subject: Comments on Eye Tracking Technologies > > > > > > > > > > > > > > Matt, > > > > Eye tracking has become increasingly popular in recent years, both as a UI > > analysis tool and as an interaction technology. So I think it is > > worthwhile > > to > > share our experience with the group. > > > > We did market research on eye-tracking technologies about two > > years ago. In > > the > > end, we choose ASL, because it seemed to be the largest vendor and it > > promised > > high percentage of users who can be reliably tracked. It also promised a > > cubic > > foot of head movement. > > > > We were very disappointed. First, it could not easily track me and many of > > my > > colleagues. It may work better if you do a lot of tweaking (threshold, > > lighting, > > camera position, screen brightness etc etc) but the same > > adjustments may not > > work the next time you come back to the tracker. It does work reasonably > > well if > > you have "good" subjects: people with no glasses, with large and bright > > pupil > > etc. Younger people tend to be better subjects too. > > > > Second, the 1 cubic foot of head movement is simply not true, > > although there > > is > > a slow servo on the camera. If you want reliable data, the subject has to > > stay > > steady. > > > > Having said that, I am not suggesting ASL is not among the best. I do not > > believe any one has a truly satisfactory eye-tracker yet. > > > > We eventually developed our own eye-tracker. The key idea that made our > > eye-tracker different from the commercial ones is that we used a > > dual infra > > red > > illumination scheme, so both the dark pupil and bright pupil (like red-eye > > in > > photos) are detected. It worked a lot better (still far from > > ideal). I hope > > the > > commercial eye-tracking companies will follow the idea soon ( In fact we > > re-invented the idea, it has been around, but not very well known). For a > > brief > > description of the IBM Almaden eye tracker, check Zhai, S. Morimoto, C., > > Ihde, > > S. "Manual And Gaze Input Cascaded (MAGIC) Pointing", Proc. CHI'99. > > > > Shumin > > ___________________________________________ > > Shumin Zhai, IBM Almaden Research Center, Tel: (408)927-1112, Fax > > (408)927-4366, > > http://www.almaden.ibm.com/cs/people/zhai > > > > > >