From weghorst@u.washington.edu Mon Jun 14 10:50:50 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 KAA22069 for ; Mon, 14 Jun 1999 10:50:49 -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 KAA04651; Mon, 14 Jun 1999 10:50:46 -0400 (EDT) Received: from jason01.u.washington.edu (root@jason01.u.washington.edu [140.142.70.24]) by asbestos.hitl.washington.edu (8.9.3/8.9.3) with ESMTP id HAA04894 for <3d-ui@hitl.washington.edu>; Mon, 14 Jun 1999 07:49:15 -0700 (PDT) Received: from saul9.u.washington.edu (weghorst@saul9.u.washington.edu [140.142.82.7]) by jason01.u.washington.edu (8.9.3+UW99.02/8.9.3+UW99.01) with ESMTP id HAA12760; Mon, 14 Jun 1999 07:49:14 -0700 Received: from localhost (weghorst@localhost) by saul9.u.washington.edu (8.9.3+UW99.02/8.9.3+UW99.01) with ESMTP id HAA22361; Mon, 14 Jun 1999 07:49:13 -0700 (PDT) Date: Mon, 14 Jun 1999 07:49:12 -0700 (PDT) From: Suzanne Weghorst To: Anders Backman cc: 3d-ui@hitl.washington.edu Subject: RE: Comments on Eye Tracking Technologies In-Reply-To: <000201beb627$f2a65780$ca29ef82@mickey.cs.umu.se> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Status: RO Hi, all. I can only pop in for a minute (so I may not be able to answer a lot of follow-up questions), but I wanted to mention two additional spatial sound technology sources. Lake DSP in Australia has a nice product line (but pricey), esp for simulating room acoustics. Also, Bill Chapin, formerly with CRE and before that with Virtual Presence, is supposedly coming out with a cheaper-and-better product line any day now (sometime this month, the last I heard). This may be one to watch (listen?) for. (I'll try to get back to the list with his company name.) cheers, suzanne ------------------------------------------------------------- Suzanne J. Weghorst, Assistant Director for Research, HIT Lab University of Washington, Box 352142, Seattle WA 98195-2142 weghorst@u.washington.edu (lab)206-616-1487 (FAX)206-543-5380 www.hitl.washington.edu ------------------------------------------------------------- On Mon, 14 Jun 1999, 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 > > > > > > > >