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- Newsgroups: comp.robotics
- Path: sparky!uunet!europa.asd.contel.com!gatech!concert!samba!usenet
- From: Herman.Woltring@bbs.oit.unc.edu (Herman Woltring)
- Subject: Re: Sensing Small Head Movements
- Message-ID: <1992Sep11.222401.25562@samba.oit.unc.edu>
- Summary: Electromagnetic sensors for rigid-body movement
- Keywords: The Bird, Ascension Inc
- Sender: usenet@samba.oit.unc.edu
- Nntp-Posting-Host: lambada.oit.unc.edu
- Organization: Extended Bulletin Board Service
- References: <1992Sep11.160621.23893@mail.cornell.edu>
- Date: Fri, 11 Sep 1992 22:24:01 GMT
- Lines: 39
-
- In article <1992Sep11.160621.23893@mail.cornell.edu>
- Richard Zimmerman <rsz1@cornell.edu> writes:
-
- >I need a way to sense both head rotation and head tilt. I would like to
- >do it as inexpensively and as unobtrousively as possible (I don't want to
- >build some huge cage to place on your head) It also needs to be pretty
- >accurate. I using the device to sense head movements in a stereo-vision
- >application. Any suggestions would be greatly appriciated...
- >
- >---- Richard Zimmerman (rsz1@cornell.edu)
-
- Look into the FAQ for sci.vr-worlds (if I recall the newsgroup name
- correctly). A relatively low-cost device is The Bird from Ascension
- Inc. in Burlington, VT, USA. It is an electromagnetic device that
- provides real-time position and attitude (attitude matrix, Cardan
- angles, and/or quaternions) of a sensor w.r.t. a source. Each con-
- tains three mutually perpendicular coils which are pulse-driven at
- the source whence position and attitude of the sensor w.r.t. the
- source can be assessed.
-
- There are various opto-electronic and ultrasonic systems, but they
- are much more expensive.
-
-
- Herman J. Woltring <woltring@nici.kun.nl>
- Moderator, Biomch-L@nic.surfnet.nl
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