HDTenEightyP/NetNews huggingface dataset:
From: S.A.Bensalem@sheffield.ac.uk
Newsgroups: sci.virtual-worlds
Subject: TECH: VR vs 3D Graphic Animation
Date: Wed, 20 Jan 1993 19:47:51 CST
Organization: University of Washington
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


There's a difference between VR, 3D Graphics, Real-time animation and
Realistic Rendering.

3D Graphics is a field of CS about rendering and representing objects
in 3d in the screen (which is obviously in 2D) this is done through a
viewing pipline which transform the coordinates of any point in the
(World) to coordinates in the screen (which are in 2D). Then the
surface or the line which is described by those points is rendered
actually I know 4 methods:

The wire frame rendering (the first one used by Sutherland in 1965
for his HMD )
The hidden removal rendering (the 1st step leading to
realistic rendering)
The Warnock Algorithms, also called the Constant Shading model,
The Gouraud Algorithms interpolating the intensities of the shading
through the intensities of the Points (called vertex) describing the
surface,
The Phong Modeling using the interpolation of the Normal vector of
each vertex to determine the intensity of the shading,
The Ray tracing here the screen is considered as a ray gun and we
calculate each intersection of each ray with each surface (including
reflexion of the beam in surface and we stop after having  subdivised
enough the beam (on of the parameters of the methods)
And last but not least (a really nice expression 'first one I lurnt
in English' ) The radiosity method WHICH IS VIEWPOINT INDEPENDANT,
and which calculate the radiation (here's the light) emmitted by each
surface in the scenery.

Realistic rendering is a purpose of 3D Graphic, trying to render so
realistic images that we've hard time to distinguish them from a
photography.

3d Animation is a purpose of 3D Graphics, were we render a scenery,
moving , generaly through a script the view point, and projecting
each frame rendered at a rate as similar as the TV rate (24
frames/second), The reader should notice that the viewer, do not have
any influence in what he see, exeptc through the alteration of the
script, and so NOT IN REAL TIME

The real time animation is more interesting, here the viewer can
alterate the coordinates of the viewpoint, and so, here start a kind
of immersivity feeling in the scenery rendered, actually we have this
kind of realtime rendered applied (at the beginning) to the Fly
simulator (which are at the origin of the VR with the Air-Synthetiser
of Zimmerman).

The  VR is more complex its a real time rendering with a powerful
interfacing WHICH ALLOW THE USER TO TOUCH OBJECTS IN THE VIRTUAL WORLD
CALLED ALSO THE CYBERSPACE, and also with the HMD he feel in the VW
where he is working with objects surrounding him.
THERE IS NO DIFFERENCE BETWEEN VIRTUAL REALITY AND ARTIFICIAL REALITY,
check the article from Van Dam in Scientific America 1985 or 1987
about New Computer (I forgot the references but If you're interested
I can found them again.

So if anybody have any comment , let's know as: the knowledge is like
the light, if it's hidden it lost its value (from me)

Virtually,
Bens.
From: mark@cs.ualberta.ca (Mark Green)
Newsgroups: sci.virtual-worlds
Subject: Re: TECH: Using an IBM as a dumb interface
Date: Fri, 22 Jan 1993 14:18:05 -0700
Organization: University of Alberta
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


In article <1jcdrhINNdra@shelley.u.washington.edu> japetros@mailbox.syr.edu (Joh
n A. Petrosillo) writes:
>
>In article <1hp8nuINNf80@shelley.u.washington.edu> bradw@chaos.cs.brandeis.edu 
(
>Brad Wyble) writes:
>>
>>
>>I'm still interested in interfacing to a Mac and I've had the
>>following idea.  How feasible is it to use an IBM as a dedicated
>>interface unit and have it output a signal to com port which would
>>then hook to a Mac?  The IBM could constantly poll both (or more)
>>gloves and keep the info handy, then the Mac would send a request for
>>either glove and the IBM would send a packet of info....
>
>I too am trying to use DataGloves with a Mac system. I am writing a C
>application that must read and analyze glove data. Is it really
>necessary to use an IBM?? Can't you use the series port on the MAc
>(assuming one is there) with the serial port on the glove interface
>box?? Any advice would be much appreciated. Thanks and good luck to
>both of us, Brad.
>
>John A. Petrosillo
>L.C. Smith College of Engineering and Computer Science
>Syracuse University
>Syracuse, NY


Are you talking about the DataGlove or the PowerGlove?  The DataGlove
was originally designed to run on a Mac and all the software shipped
with the early DataGloves only ran on Mac's.  You should look at the
DataGlove documentation it will show you how to connect it to a Mac.
From: michel@ensibull.imag.fr (Olivier MICHEL)
Newsgroups: sci.virtual-worlds
Subject: EVENT: IMAGINA '93 a Monaco
Date: Sat, 23 Jan 1993 17:24:18 GMT
Organization: Ensimag-Enseignement
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



Etant etudiant en deuxieme annee d'une grande ecole francaise
d'Informatique, et passionne par ce sujet, je vais aller au salon
IMAGINA a Monaco (17-19) sur les mondes virtuels et les nouvelles
images.

Quelqu'un pourrait-il me dire ce que je dois aller voir en priorite
la-bas, quelles personnes rencontrer en vue d'un stage, d'un projet de
troisieme annee d'ecole d'ingenieurs, ou d'un emploi ??

Merci d'avance a tous ceux qui repondront.

*********************************************
* Olivier MICHEL    ENSIMAG 2eme Annee      *
*                                           *
*    email : michel@ensibull.imag.fr        *
*********************************************
* Helena (a Mme la prefet) : Racontez tout ca a votre voisin, parce ce
    que moi, j'en ai rien a branler de vos conneries.
* Le prefet : (a son epouse, suffoquee) : Que se passe-t-il, cherie ?
              (a Helena) : Que se passe-t-il, Madame ?
* Helena : Il se passe que je disais a votre femme que j'en avais rien a
    branler des conneries qu'elle me racontait.
* Le mari d'Helena : Helena, fais des excuses immediatement.
* Helena : Des excuses ? Pourquoi des excuses ? T'as qu'a venir ici, gros
    malin, et tu verras comme c'est interessant la conversation.   
* Le mari : Helena, sors de cette table immediatement.
* Helena, se levant : Monsieur le prefet, votre diner est nul, votre
    baraque est nulle, et je vous emmerde tous.
From: discord@gn.apc.org ( )
Newsgroups: sci.virtual-worlds
Subject: Re: APPS: VR word proccesing?
Date: 21 Jan 93 12:22:08 GMT (Thu)
Organization: University of Washington
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



Hi everybody, my name is Ossi and I am researching an article for the
German Telecommunication magazine CONNECT, which is planning a whole section
on Email and networking fthe March issue. Now I would like to know more abo
about people's ecperience with Email and Electronic networking. Anybody
on the conference willing to contibute a few lines on what is hot and what i
is not about Email? Or his or hers best, funniestexperience in the net?
Please send your statements to
DISCORD@gn.apc.org
Thanx to everybody who does!
ossi
From: diego@minerva.st.dsi.unimi.it (Diego Montefusco)
Newsgroups: sci.virtual-worlds
Subject: Re: EVENT: Paris, Centre Pompidou: VR Art Installation
Date: Mon, 25 Jan 93 14:24:19 CET
Organization: University of Washington
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



In <9301250614.AA28664@ghost.dsi.unimi.it>, on Jan 24, my alter ego
wrote:

> From: diego@minerva.st.dsi.unimi.it (Diego Montefusco)
> Subject: EVENT: Paris, Centre Pompidou: VR Art Installation
> 
> Just back from Paris: the installation was well worth the travel!
> 
> It consisted of an Iris Elan R4000, a Fake Space Labs' BOOM2C, a 486 with
> two Beachtron boards that provided localized sound.
> ... [I then went on with a WONDERFUL description...]

I just missed something: what the participant was allowed/asked to do?
And this is not of secondary importance, I'd say.

Well, you could navigate through the virtual world. The BOOM has two
buttons on its handles, and where used to move forward/backward on the
line of sight.  The animals were moving with goal-directed,
obstacles-avoidance algorithms, and avoided the user too!

Now I think that's really all, folks!

Diego
From: strommer@odysseus.informatik.uni-stuttgart.de (Walter Strommer)
Newsgroups: sci.virtual-worlds
Subject: CONF: Virtual Reality '93 IPA/IAO-Forum, Stuttgart, 4-5 Feb 93
Date: 26 Jan 93 16:49:24 GMT
Article-I.D.: shelley.1k5cceINNho0
Organization: IPVR, University of Stuttgart, Germany
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



Virtual Reality '93 FORUM
Anwendungen & Trends
4.-5. Februar 1993
Stuttgart, Germany
------------------
Institutszentrum der Fraunhofer-Gesellschaft
Stuttgart-Vaihingen


Neben den Einsatzgebieten von Virtual Reality werden die Fachvortraege
ueber den Stand der Technik und laufende Entwicklungsarbeiten
informieren. Die rasante Entwicklung der Grafikrechner, die
erforderlichen Technik - sowie Softwarekomponenten werden in den
Vortraegen vorgestellt.

Neben Fachvortraegen wird eine Ausstellung fuer Produkte und
Applikationen den Rahmen fuer die Forumsveranstaltung abrunden.

Weitere Informationen erhalten Sie von:

     Fraunhofer-Institut fuer
     Produktionstechnik und Automatisierung (IPA)
     Herr Jens Neugebauer
     Nobelstrasse 12
     W-7000 Stuttgart 80
     
     +49 711 970 1247 Telefon
     +49 711 970 1399 FAX

Konferenzleiter sind

     Prof. Dr.-Ing. H. J. Warnecke   
     Prof. Dr.-Ing. H.-J. Bullinger
From: wampner@next1.cs.ucf.edu (Eric Wampner)
Newsgroups: sci.virtual-worlds
Subject: Re: CULTURE: Simpsons do VR
Date: Tue, 19 Jan 1993 21:17:26 GMT
Organization: University of Central Florida
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


WILLIAMSON, JOHN EDWARD writes
> 
> 
> For those who keep tabs on VR in the (U.S.) mainstream media, Lisa
> Simpson (Bart's sister on Fox's _The Simpsons_) has joined the elite
> group of cartoon characters who have experienced VR (others include
> Darkwing Duck and Batman).
> 
> On the Jan 14th episode, Lisa briefly visted Ghangis Khan (sp?)  by
> wearing a VR helmet at school.
Its worse than that 

She imagined that she was using a VR helmet.
"You'll kill who I kill, you'll eat who I eat"

So, she is a virtual person imagining herself in a virtual reality.

Okay, everybody,, reality check.
BZZZZZT.
Eric Wampner
wampner@acme.ucf.edu
From: diego@minerva.st.dsi.unimi.it (Diego Montefusco)
Newsgroups: sci.virtual-worlds
Subject: Re: TECH: Question about DHM
Date: Mon, 25 Jan 93 17:04:50 CET
Organization: University of Washington
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



In <9301250422.AA24684@ghost.dsi.unimi.it>, on Jan 24, you wrote:

> From: rustle@sage.cc.purdue.edu (Russell Holt)
> Subject: TECH: Question about DHM
> Date: Fri, 22 Jan 1993 18:56:17 GMT
> Organization: Purdue University
> 
>    I've seen pictures of the Dextrous Hand Master, but I'd like to ask anyone
> whose actually used one about it.  On the back of the hand sits a base to
> which the devices measuring the fingers and the thumb are attached.
> This, then, is somehow attached to a wrist strap.  My question is,
> how does this base stay pressed against the hand? How does it keep from
> rocking up and down when the fingers are moved only slightly?  In my
> attempts to construct a glove which measures finger movements in a
> mechanical fasion, I have run into this problem, and am finding it
> difficult to prevent this while keeping it comfortable...

I don't have used it, but I saw some pictures, and there's something
that presses on the palm, making a kind of a "clip".  I don't actually
know whether DHM is confortable.

Diego

    ---------------------------------------------------------------------
   | Diego Montefusco     |         Computer Science Department          | 
   | Via Pirano 4         |         University of Milan - Italy          |
   | 20127 Milano         |                                              |
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    ---------------------------------------------------------------------
From: heifetz!rphroy!rcs.cs.gmr.com!smith1@uunet.UU.NET (Randall C. Smith)
Newsgroups: sci.virtual-worlds
Subject: TECH: C code for CrystalEyesVR/Deering system
Date: 19 Jan 93 21:02:08 GMT
Organization: GM Reseach Laboratories
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



Michael Deering of Sun, in "High Resolution Virtual Reality" 
(Computer Graphics, v26, 1992) describes a system that achieves
good registration between virtual and physical worlds.  It uses
LCD shutter glasses (CrystalEyesVR from Stereographics) to view
a stereo image, rendered (by a Sun workstation) wrt to eye positions
measured by a headtracker.  The headtracking hardware is from
Logitech, and coupled into the CrystalEyesVR package.

We have the same equipment, but will use an SGI Reality Engine as
renderer.  Has anyone developed C code for CrystalEyesVR that we
could have for research purposes?  Especially, does anyone have code that
duplicates Mr. Deering's calibrations? 

Thought I'd send this in parallel while trying to contact Mr. Deering
himself; but I'd be surprised if a number of duplicate systems haven't
already been written, since the the stereo effect and physical world to
virtual world registration are quite striking.  I'd be interested in hearing
from anyone else who has duplicated or embellished this approach.
Thanks,
--Randy
From: gdavis@ccwf.cc.utexas.edu (Grant R. Davis)
Newsgroups: sci.virtual-worlds
Subject: Re: TECH: Nintendo's U-Force
Date: 20 Jan 1993 20:58:13 GMT
Organization: The University of Texas at Austin, Austin TX
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


I have a U-Force that I could part with if anyone's interested.
I haven't really tried anything in VR with it.
It's a collection of sensors, so I suppose it would be like the
Powerglove, although the PG has more degrees of freedom.

Grant Davis
From: branham@utkvx3.utk.edu (ICARUS ARCHEMEDES AURELIUS ARTURUS)
Newsgroups: sci.virtual-worlds
Subject: INFO?: Hardware et al (Appropriate VR system?)
Date: Wed, 20 Jan 1993 13:45:00 GMT
Organization: University of Tennessee Computing Center
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


I'm very interested in the developing field of virtual reality and I'd
like to take VR into consideration during the purchase of my next 
computer system. Which company is doing the most research and development
for home and business applications? Is it possible through peripherial
upgrade to get my IBM 386 up to par for home VR? What hacking secrets are
there out there that all for better stereoscopy or virtual manipulation,
and where can I find them in a well-organized format? Thanx for your help
in advance. This group has provided me with much valued info in the past.

                                         IAAA
Newsgroups: sci.virtual-worlds.apps
From: deloura@cs.unc.edu (Mark Andrew Deloura)
Subject: TEST: VRAPP-L mailing list test
Organization: The University of North Carolina at Chapel Hill
Date: Mon, 25 Jan 1993 22:28:26 GMT


Sorry to be posting another test message, but we're just checking to make
sure that the VRAPP-L mailing list for this newsgroup works like we expect
it to. 

Hopefully it will echo sci.virtual-worlds.apps in the same manner that
sci.virtual-worlds is echoed by VIRTU-L.

Many thanks to Greg Newby for this wonderful service!
     ---Mark
===============================================================================
 Mark A. DeLoura       deloura@cs.unc.edu      U of North Carolina, Chapel Hill
                sci.virtual-worlds{.apps} co-moderator/librarian
From: battlec@cs.rpi.edu (Clark Battle)
Newsgroups: sci.virtual-worlds
Subject: Re: TECH: Distortion in VR view
Date: 26 Jan 93 16:08:34 GMT
Article-I.D.: shelley.1k5cg1INNhp0
Organization: University of Washington
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



In article <1jvlreINNcu5@shelley.u.washington.edu>,
dchapman@ncsa.uiuc.edu (Dee A. Chapman) writes:

|> I've noticed some "distortion" in viewing 3D graphics objects which
|> were rendered using an SGI SkyWriter (GL Library).  For example, if I 
|> create two divergent rectangular boxes, and view them on the flat screen
|> of the computer console, they will appear to converge or be parallel:
|> etc

I have an article dealing with this and if I remember it correctly it
has to do with the viewer's inter pupillary distance. Ill have to
reread it to be sure though.  The article does, however, give some
explaination for it.

        "A Computational Model for the Stereoscopic 
                Optics of a Head Mounted Display"

                Warren Robinett
                Jannick P. Rolland
                UNC - CS dept

                SPIE vol 1457
                Stereoscopic Displays and Applications II (1991)
From: joro@Panix.Com (Joe Rosen)
Newsgroups: sci.virtual-worlds
Subject: Re: TECH: Electrolytic polymers (or whatever)?
Date: 27 Jan 93 21:52:05 GMT
Article-I.D.: shelley.1k8fsvINNs8a
Organization: PANIX Public Access Unix, NYC
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu



In <C1FsuK.FDs@mentor.cc.purdue.edu> barchasd@mentor.cc.purdue.edu
(David Barchas) writes:

>Does anyone know of a polymer or something that bends when an elcetric
>current is passed through it.  It needs to be very fast acting,
>although if you only know of something that can point me in the right
>direction it would be very apreciated.  I am working on something
>which would use that sort of thing.  I guess it can also be a plastic
>that will vibrate extremely fast almost buzz.  I guess piezo film does
>that but I don't know where to get just a small square or the like,
>except in a radioshack buzzer(which is not what I want).
>Any replies are appreciated.

don't know about polymer material...

     ... but have experimented with nickel-titanium alloy wires that
react (i.e. "bend" -- expand and contract) when a current is applied
(anywhere from 50 to approx. 400 mA will work ok)...

they can be purchased in sample quantities, along with a booklet
describing how to use 'em --

     -- from a company called:

mondo-tronics
2476 verna ct.
san leandro, CA 94577
1-800-374-5764

     tons of lil' advertisments for this stuff (i.e. the mondo-tronics
sampler) can be found in the magazine rack electronics books (like
"radio electronics" magazine for example)...

... such magazines are a neat source for weird lil' companies sellin'
all kinds 'o bizarre "garage" variety components.
From: laplante@sun490.fdu.edu (Phil Laplante)
Newsgroups: sci.virtual-worlds
Subject: CONF CFP:Session on Real-Time Image Processing
Date: Wed, 20 Jan 1993 19:24:44 GMT
Organization: Fairleigh Dickinson University
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu





            * * * C A L L    F O R    P A P E R S * * * 


Papers are requested for  a special session on "Real-Time Image Processing" 
to be held at the 1993 IEEE Systems, Man, and Cybernetics Conference 
in Le Touquet France, October 17-20, 1993.

The IEEE SMC conference is the showcase gathering for the IEEE SMC interest
group.  IEEE SMC covers a broad range of topics in image processing, robotics,
and artificial intelligence.  The archival journal of the society is the
IEEE Transactions on Systems, Man, and Cybernetics.

Topics for the session include but are not limited to:

Real-time image processing applications
Real-time image processing protocols
Real-time image processing specification 
Real-time image processing architectures
Multi-media 
Virtual reality
Remote sensing and control
Real-time image compression

Papers should be 6-10 pages in length and will be published in the
conference proceedings.  Authors will be expected to make a presentation
at the conference.

The deadlines for submission to the conference are as follows:

Extended abstract submission   February 15, 1993
Preliminary acceptance         May 1, 1993
Full paper submission          July 15, 1993
Final acceptance               August 1, 1993

Please send extended abstracts via post, FAX, or email to:

Dr. Phil Laplante
Department of Mathematics and Computer Science
Fairleigh Dickinson University
Madison, NJ 07480
laplante@fdumad.fdu.edu
(201) 593-8680 (voice)
(201) 593-8886 (FAX)

If you need further information, please do not hesitate to call.
From: COS.MARSHALL@GLASGOW-POLY.AC.UK
Newsgroups: sci.virtual-worlds
Subject: INFO: Conference technical info
Date: Tue, 19 Jan 93 15:01:02 GMT
Organization: University of Washington
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


Mark D said :
In article <1jd2b2INN648@shelley.u.washington.edu> Carl Loeffler
<cel+@andrew.cmu.edu> writes:

>STUDIO FOR CREATIVE INQUIRY
>Carnegie Mellon University
>
>Announcing:
>
>During the month of February, Carl Eugene Loeffler, Project Director,
>Telecommunications and Virtual Reality, CMU, will conduct
>presentations on the subject of NETWORKED VIRTUAL REALITY at the
>following:

[...]

I don't know about the rest of the net, but I keep seeing these
announcements, and I'm really itching for some techinical details
about the NETWORKED VIRTUAL REALITY project going on at CMU now.

I've gathered that Sense8's software is being used, but really want to
hear some detail about protocols, polys/sec, interfaces, and things of
that sort.
------------------------end of quote---------------------

I'll back that up.
That's just the area I'm interested in. Being in the UK, its not
geographically convenient for me to go to these conferences (all the
interesting ones like NETWORKED VIRTUAL REALITY are always in the US).

Anyone tell me where I can get all the technical info in this area
inparticular.

Thanks for any help,
-Iain Marshall, Glasgow Caledonian University

cos.marshall@glasp.ac.uk

"Even better than the REAL thing..." -Bono
From: bards_n@azalea.cs.odu.edu (Nathan Bardsley)
Newsgroups: sci.virtual-worlds
Subject: Re: ADMIN: Just the FAQs
Date: Fri, 22 Jan 1993 00:56:45 GMT
Organization: Old Dominion University, Norfolk, Va
NNTP-Posting-Host: stein.u.washington.edu
Originator: hlab@stein.u.washington.edu


A quick check from here came up with 'ftp.washington.edu' as an unknown
addr, while 'ftp.u.washington.edu works', and ends up connecting to
'milton'.
-- 
Nathan Bardsley -- bards_n@cs.odu.edu

[Co-Mod (Mark):  Oops!  We accidentally printed the address of the
        FTP site as ftp.washington.edu-- you're right, it *is*
        ftp.u.washington.edu.  Sorry for the slip-up! ]