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1994-07-27
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From diderot@hitl.washington.edu Tue Jul 26 14:11:08 1994
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From: Leon@ndigital.com (Leon Kehl )
Message-Id: <19662@ndigital.com>
Date: Mon, 20 Jun 94 10:35:55 EDT
Organization: Northern Digital Inc. Waterloo, Ontario, Canada
Return-Receipt-To: Leon@ndigital.com
To: temerson@hitl.washington.edu
Subject:
Resent-To: scivw@hitl.hitl.washington.edu
Resent-Date: Tue, 26 Jul 94 14:09:30 -0700
Resent-From: Toni Emerson <diderot@hitl.washington.edu>
Resent-Xmts: smtp
X-Status:
Status: OR
Subject: 3D Motion Measurement System
Dear Toni:
I read with interest the report "Medicine and Virtual Reality: A Guide to
the Literature" prepared by you and your colleagues and thought you should
be aware of a product my company manufactures. I work for Northern Digital
Inc. and we manufacture the OPTOTRAK 3D motion measurement system. Our
system is currently being used by Codman & Shurtleff in their new product
Acustar for computer aided image guided surgery. I am assuming others in
the medical field might also be interested, since I noticed several of our
current customers in reading through your list of technical papers. Listed
below is a brief description of our system:
Northern Digital makes a 3D motion measurement system which is capable of
tracking up to 256 IRED markers. Rather than using video cameras, the
system uses 3 one dimensional CCD sensors rigidly mounted in a chassis.
This approach has the advantages of automatic marker recognition, real-time
3D data, no need for user calibration, high speed, high resolution and high
accuracy. The system is currently used for computer aided surgery as well
as being widely used for motor control, gait analysis and general purpose
research. Over 200 OPTOTRAK and WATSMART systems have now been installed
worldwide.
Features
--------
- Automatic marker recognition since markers are time multiplexed
- Sensor precalibrated at factory; no user calibration required to measure 3D.
- CCD Sensors allow accuracy to 0.1mm and resolutions to 0.01mm
- Real-time 3D data available for subject feedback applications and
graphical display during collections.
- Real-time tracking of multiple rigid bodies.
- Specialized system for medical applications.
- Umbilical strober cable can be replaced by new tetherless strober
controller.
- Optional A/D tightly integrated with OPTOTRAK allowing collection using
single computer, with rates up to 200K/s and 256 channels.
- Available software to convert data files to different file formats.
- Tracks up to 3,500 markers / second
- Frame rates to 400Hz
- Attaches to IBM PC compatible computer. Optional SCSI interface for non
IBM PC platforms.
If you want further information please call or e-mail your address and I
can send you a complete information package:
Sincerely,
Leon
--
---------------------------------------------------------------------------
Leon Kehl leon@ndigital.com
(519) 884-5142 (519) 884-5184 Fax
(800) 265-2741 U.S. Only