From andersb@cs.umu.se Mon Jun 14 01:38:52 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 BAA14581 for ; Mon, 14 Jun 1999 01:38:51 -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 BAA00646; Mon, 14 Jun 1999 01:38:47 -0400 (EDT) Received: from oxe.cs.umu.se (root@oxe.cs.umu.se [130.239.40.14]) by asbestos.hitl.washington.edu (8.9.3/8.9.3) with ESMTP id WAA04221 for <3d-ui@hitl.washington.edu>; Sun, 13 Jun 1999 22:36:58 -0700 (PDT) Received: from mickey (rfc1413 says mickey.cs.umu.se [130.239.41.202]) by oxe.cs.umu.se (8.8.8/8.8.8) with SMTP id HAA28739 for <3d-ui@hitl.washington.edu>; Mon, 14 Jun 1999 07:36:55 +0200 (MET DST) From: "Anders Backman" To: <3d-ui@hitl.washington.edu> Subject: RE: Comments on Eye Tracking Technologies Date: Mon, 14 Jun 1999 07:37:10 +0200 Message-ID: <000201beb627$f2a65780$ca29ef82@mickey.cs.umu.se> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 In-Reply-To: <4FD6422BE942D111908D00805F3158DF0D954465@RED-MSG-52> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Importance: Normal Status: RO 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 > > >