HDTenEightyP/NetNews huggingface dataset:
From: dbarberi@rodan.acs.syr.edu (London W11)
Subject: Re: Stereo gif(s) posted
Organization: Syracuse University, Syracuse, NY
Date: Sat, 29 Aug 92 02:12:08 EDT

In article <6726@tekig7.PEN.TEK.COM> rick@tekig1.PEN.TEK.COM (Fredrick Wilson) writes:
>In article <1992Aug24.165821.22004@crd.ge.com> davidsen@crd.ge.com (bill davidsen) writes:
>>I posted one stereo gif to alt.binaries.pictures.misc last night,
>>several more to follow. Enjoy.
>
>The more, the better.  But would someone who has access to them please
>FTP them to sugrfx.acs.syr.edu /pub/incoming   so the millions of us
>who don't get alt.binaries.pictures.* can get to them...please,please.
>To motivate someone to put them on sugrfx I have just loaded a
>pair of files (StHelens_l.gif StHelens_r.gif) into /pub/incoming
>which are a stereo pair of an orbital view of the crater in
>Mt. St. Helens.  They might get moved to /pub/vr/3d any time.
  
   Thanks for the upload of the StHelen gifs, I put them in 
 /pub/vr/3d/stereo_pairs/photos for all to grab.  I also got one
of the gifs posted (ds001s.gif) in /pub/incoming.  If someone else can
drop the others off on sugrfx I'd be much appreciative!  It's a pain to
uudecode multiple files in line mode telnet.
 
                        

 --=-----------------------------------------------------------------------.
  _          _    _____           David Barberi                            |
  \\        //   ||---\\          dbarberi@sugrfx.acs.syr.edu              |
   \\      //    ||    ||         Syracuse University, New York, USA       |
    \\    //     ||___//          Resume available on request              |
     \\  //      ||---\\          "At Virtual Worlds Consulting, we bring  |
      \\//       ||    \\          cyberspace to your living room"         |
       \/        ||     \\   --=-------------------------------------------'

Newsgroups: alt.3d
From: gold@imp.sim.es.com (Bruce Gold)
Subject: Re: How do I generate the two views for a 3d image (LCD glasses)
Organization: Evans & Sutherland Computer Corp., Salt Lake City, UT
Date: Wed, 26 Aug 1992 20:45:38 GMT

In article <busey.714845002@milton>, (Thomas Busey) writes:
|> 
|>   My question is how to generate the left and right images for a
|> stereo display.  Three transforms come to mind:  1) pan left and right
|> 2) dolly the camera left or right perpendicular to "forward" 3) dolly one way 
|> and pan the other simultaneously
|>   I've read that local transforms of the objects such as local rotations
|> introduce distortions such as vertical parallax.  This doesn't sound like
|> a good solution.
|> 
|>   Since this is obviously still a point of active discussion, I thought
|> I'd post to alt.3d.

The prize is behind door number 2.  

While eye convergence for stereoscopy does exist, its effect is a low-precision
size queue.  It is not part of the stereoscopic effect.  That is caused by the 
visual cortex evaluating parallex differences.

Since you are interested in doing psychology research, you will surely be 
interested in what aspects of the stereo effect are already known to be
contributed by projective geometry, the physiology of the human visual system,
and psychological phenomena already discovered.  It's easy and rewarding to
get started in your survey of the literature.  As luck would have it, the
address for Reel 3D Enterprises was posted within the last couple of days. 
They specialize in this field.  I suggest you get their catalog and buy some of 
the books on stereoscopy.  It will at least help you to design your experiments. 
And, who knows?  You might get REALLY hooked on stereoscopy!  Good luck.
-- 
				Bruce Gold
				   Utah
Newsgroups: alt.3d
Subject: DBW_Render, DKB_Trace & LCD stereo glasses
From: stuart@cantua.canterbury.ac.nz (Stuart Ralston)
Date: 26 Aug 92 15:07:36 +1200
Distribution: world
Organization: University of Canterbury, Christchurch, New Zealand.

I'm looking DBW_Render & DKB_Trace PD software. Also some software to
interface a pair of LCD stereo glasses to a PC through a serial port.

Cheers.

 \||||||/
 / o  o \	   ___  ____  stuart@cosc.canterbury.ac.nz
 \ /  \ /	  /__    /   /  /	 
  (    ) 	 ___/   /   /__/     
   \__/
Newsgroups: alt.3d
From: thiel@hardy.u.washington.edu (me me me me...)
Subject: Re: Q: Why do i see inverted Stereograms ?
Organization: University of Washington, Seattle
Date: Thu, 27 Aug 1992 09:48:21 GMT

  How you see the image depends on whether you look at the image cross-eyed
or wall-eyed.  Wall-eyed is the "normal" way, but I know many people who can 
only look cross-eyed.  I worked and worked and can now do either...

thiel@hardy.u.washington.edu

Newsgroups: alt.3d,rec.electronics,rec.video
From: Curt.Miller@bbs.oit.unc.edu (Curt Miller)
Subject: 3DTV via LCD Glasses?
Organization: Extended Bulletin Board Service
Date: Wed, 2 Sep 1992 15:43:36 GMT


I was wondering if anyone has done any work with 3DTV using LCD
shutter glasses as the medium for portraying the three dimensional
image?  I have seen a demo of an inexpensive system by XSPECS-3D
that used a LCD visor.  It was running on a Comodore Amiga which has 
NTSC video output. I've also read about a system called Crystal Eyes 
Systems put out by Stereo Graphics Corp.  (this system has a higher
refresh rate)
	I was wondering if anyone has done any work with either of these 
two systems or possibly with other ones.  I would appreciate any info
or help I can get on this project.  Thanks!

	UCSKJM@UCS.UWPLATT.EDU    or  UCSKJM.UWPLATT.BITNET
--
   The opinions expressed are not necessarily those of the University of
     North Carolina at Chapel Hill, the Campus Office for Information
        Technology, or the Experimental Bulletin Board Service.
           internet:  bbs.oit.unc.edu or 152.2.22.80
Newsgroups: alt.3d
From: smr@csuvax1.csu.murdoch.edu.au (smrr)
Subject: Re: Test
Organization: Murdoch University
Date: 27 Aug 92 14:18:55 GMT

sanders@andromeda.rutgers.edu (D. Sanders) writes:

>ngsw@hpsgm2.sgp.hp.com (Ng Soon Wei) writes:

>>This is a test. Pls ignore.

>This is also a test

I did ignore it :-)
From: mzaransk@ux4.cso.uiuc.edu (Marcin B Zaranski)
Newsgroups: alt.3d
Subject: POETRY
Summary: original poem
Date: 2 Sep 92 15:50:55 GMT
Organization: University of Illinois at Urbana

only the frozen fingers plow the night
searching life
winter finds them lost
in the labyrinth of shadows.

 
A
by Maracin Zaranski 
Newsgroups: alt.3d
From: kludge@shelley.u.washington.edu (Eric A. Moon)
Subject: Re: Test
Organization: University of Washington, Seattle
Date: Fri, 28 Aug 1992 01:39:15 GMT

In article <smr.714925135@csuvax1> smr@csuvax1.csu.murdoch.edu.au (smrr) writes:
>sanders@andromeda.rutgers.edu (D. Sanders) writes:
>
>>ngsw@hpsgm2.sgp.hp.com (Ng Soon Wei) writes:
>
>>>This is a test. Pls ignore.
>
>>This is also a test
>
>I did ignore it :-)

No you didn't.  ;)
From: rick@tekig1.PEN.TEK.COM (Fredrick Wilson)
Newsgroups: alt.3d
Subject: Re: How do I generate the two views for a 3d image (LCD glasses)
Date: 28 Aug 92 20:49:29 GMT
Organization: Tektronix, Inc., Beaverton,  OR.

In article <1992Aug28.085032.29645@gucis.cit.gu.edu.au> svenema@gucis.cit.gu.edu.au (Sven Venema) writes:
>rick@tekig1.PEN.TEK.COM (Rick Wilson) writes:
>
>>      Rick   Wilson             Rick Wilson       Cross-eyed STEREO
>>      --------------           --------------
>>     |       O      |         |      O       |
>>     |    O         |         |     O        |    rick@sable.pen.tek.com
>>     |              |         |              |    Tektronix
>>     \    _     O   |         |\    _  O     |    Beaverton, Orygun
>>     |\  /      _   |         | \  /   _     |
>>     | \/   \  /    |         |  \/\  /      | 
>>      --------------           --------------      
>
>Hmmm... just a quick question. Can this .sig be viewed in Xeyed stero?
>

It SHOULD be viewed Xeyed.  It is intended for Xeyed.
I guess you missed the "Cross-eyed STEREO" message in the upper right.

Just keep practicing -- no more than 15 minutes a day.  If you can
view wall-eyed I'm sure you can view Xeyed.  Good luck.

Here is a wall-eyed version to show you what you should see in the 
Xeyed version:  (right arm in front, left arm behind window)



       Rick Wilson            Rick   Wilson         STEREO
     --------------          --------------      
    |      O       |        |       O      |       rick@sable.pen.tek.com
    |     O        |        |    O         |       Tektronix
    |              |        |              |       Beaverton, Orygun
    |\    _  O     |        \    _     O   |     
    | \  /   _     |        |\  /      _   |     
    |  \/\  /      |        | \/   \  /    |     
     --------------          --------------      
Newsgroups: alt.3d
From: kingpin@world.std.com (Joe Smooth)
Subject: escher, tunnel, etc.
Organization: The World
Distribution: alt
Date: Sun, 23 Aug 1992 18:18:46 GMT

I just have to say that the escher.gif tunnel.gif and the other .gif (of the
girls face) stereograms were AMAZING! I like these a lot better than the
random dots, because there is an image before you even un-focus your eyes..
From: lectro@milton.u.washington.edu (Jonathan E. Maier)
Subject: Re: Stereogram
Organization: University of Washington, Seattle
Date: Sun, 30 Aug 1992 17:00:46 GMT

In article <1992Aug30.040241.6572@uniwa.uwa.edu.au> bteo@tartarus.uwa.edu.au (Teo Boon Cheang) writes:
>I have problem seeing steoreo stuff .. via crosseyes?
>What ya mean by crosseye anyway, I tried to "fuse" the 2 pictures
>together but i got a headache instead!

Personally, I view them by *relaxing* my eyes.  This causes them to do the
opposite of crossing your eyes (wall-eyed?) and focus to around 6 feet in
front of you.  I can do this all day without causing eye strain/damage.

  Jonathan E. Maier             # ## #                lectro@u.washington.edu
 -----------------------------  # ## #  --------------------------------------
  Weekend Operator             ## ## ##              University of Washington
  UCS Operations              ##  ##  ##                  Seattle, Washington
From: danielg@autodesk.com (Daniel Green)
Newsgroups: alt.3d
Subject: Re: Help me with 3d objects
Date: 25 Aug 92 17:43:05 GMT
Reply-To: danielg@autodesk.com
Organization: Autodesk, Inc.

In article 1@kosmos.wcc.govt.nz, parker_n@kosmos.wcc.govt.nz () writes:
> Hello there,
> Can anyone out there tell me how I can animation 3d objects, ie stuff like
> vector objects,(the objects you see in 3d type games).
> How do you move,rotate them ??
> One other thing, when drawing solid 3d objects how do you know what side to do
> first???
> Any help would really be appreciated heaps 
> Please, if your can give me some code can you do it in basic!!!
> (The only language I can programm in!!)
> Cheers
> Nicholas Parker


Most graphics weenies start with the book "Fundamentals of Interactive
Computer Graphics" by Foley & Van Dam.  It explains all the concepts
and includes the important algorythms.  The painters algorythm which
you are asking for involves cutting all the projected and clipped 3d
objects into smaller units that don't overlap in Z, sorting them in Z
and then drawing from back to front.  This and other related algorythms
are very complex.  Simplier is to use a Z-buffer.  If you don't have
Z-buffer hardware, you can emulate one in software.  It takes a lot of
memory (minimum 16 bits per pixel) and can be very slow but it's *much*
easier to do.

I also suggest that you get a C compiler and learn C which has become the
language of computer graphics.
---
Daniel Green
danielg@autodesk.com
      ___________          ___________
      |         |          |         |
      |  _________         | _________
      |  |       |         | |       |
      |  |  _______        | | _______
      |  |  |     |        | | |     |
      ---|  |  _____       --| | _____
         ---|  | D |         --| | D |
            ---|  G|           --|  G|
               -----             -----

Newsgroups: alt.3d
From: stu020@twncu865.ncu.edu.tw
Subject: 625
Organization: Computer Center, NCU, Taiwan, R.O.C.
Date: Mon, 31 Aug 1992 15:09:10 GMT

asdfdsa
From: drascic@ie.utoronto.ca (SpIke)
Subject: Re: How do I generate the two views for a 3d image (LCD glasses)
Organization: University of Toronto, Department of Industrial Engineering
Date: Thu, 3 Sep 1992 16:51:11 GMT

rick@tekig1.PEN.TEK.COM (Fredrick Wilson) writes:

>drascic@ie.utoronto.ca (SpIke) writes:

>Most of my "shutter" viewing is on Tektronix systems.
>They are like yours except:
>60 Hz or 120 Hz depending on user selected vertical resolution of
>1024 lines or 512 lines; (1280 pixels wide;)
>The LC shutter is on the screen, not the glasses.  This allows use
>of more-comfortable normal polorized glasses by an unlimited number 
>of simaltanious viewers.

Unfortunately, I haven't had a chance to try out the Tektronix system.
(Their sales creatures tell me that their demo unit is out of town whenever
I ask to see it.)  I've heard that there are problems with crosstalk,
however.

>>>>>Convergence error can be compensated for to some extent by rotating
>>>>>the images (and cropping again) but you can only fix part of
>>>>>the picture at a time.  You can't fix the whole picture at once without
>>>>>fancy image processing.

>I mean rotating the displayed *image* for one eye.  o to   o
>                                                    |     /
>                                                    o    o

>But just a few degrees.
>Convergence error can be pseudo-corrected for this way.

I still don't get it.  Are you doing a real rotation, or a psuedo-rotation
such as is frequently used as a video special effect?  That is, do you
really convert a 2D picture into a 3D object, rotate the object, and
generate a completely new 2D picture (how would you display the back?)
or do you squeeze the left half of the 2D picture and stretch the right (in
a smooth, continuous way) to make it LOOK like you've rotated the picture?

Or do you mean you angle the monitor relative to the viewer?

>I don't work in the Tektronix TV group, so I'm not familiar with
>all of our offerings, but all the video and graphic effects you
>saw on the Olympic broadcasts were done with Tek, or Tek subsidiary
>products.  I'm sure we have several products that can rotate and
>crop video images.  We're the world leader in TV test equipment, and
>our Grass Valley subsidiary is the world leader in video production
>switchers and effects boards.

From this ad, I surmise that you mean you do a video-effect psuedo-rotate.

>From an engineer standpoint I found that convergence can fail,
>parallel can not.  I picked the robust one.

Since you use free-association for viewing your images, most of the
arguments I've been raising don't really apply.  Free-association can only
be used as a 3-D display technique for relatively short periods of time
(try doing a complex task using it for, say 3 hours and you'll see what I
mean), and the geometry is different.  No WONDER we were having such trouble
agreeing.

	David Drascic
	Dept of Industrial Engineering
	University of Toronto
	drascic@ie.utoronto.ca
From: sanders@andromeda.rutgers.edu (D. Sanders)
Newsgroups: alt.3d
Subject: Re: Test
Date: 27 Aug 92 00:38:21 GMT
Organization: Rutgers Univ., New Brunswick, N.J.

ngsw@hpsgm2.sgp.hp.com (Ng Soon Wei) writes:

>This is a test. Pls ignore.

This is also a test
From: inelson@gopher.cc.ucf.edu (Ian Nelson - I&R IBM Consultant)
Newsgroups: alt.3d
Subject: Re: stereo Gif's
Date: 25 Aug 92 19:30:27 GMT
Organization: University of Central Florida Bunch o' Consultants

I'm new here and am really interested in the stereo gif's. But, I don't know 
what is necessary to view them. can someone explain this to me.

				thanks 
					Ian
Newsgroups: alt.3d
From: sonic@romulus.cray.com (Curtis Swanson)
Subject: Re: How do I generate the two views for a 3d image (LCD glasses)
Organization: Cray Research, Inc.
Date: 28 Aug 92 16:03:57 CDT


In article <1992Aug28.085032.29645@gucis.cit.gu.edu.au> svenema@gucis.cit.gu.edu.au (Sven Venema) writes:

~rick@tekig1.PEN.TEK.COM (Fredrick Wilson) writes:
~
~>      Rick   Wilson             Rick Wilson       Cross-eyed STEREO
~>      --------------           --------------
~>     |       O      |         |      O       |
~>     |    O         |         |     O        |    rick@sable.pen.tek.com
~>     |              |         |              |    Tektronix
~>     \    _     O   |         |\    _  O     |    Beaverton, Orygun
~>     |\  /      _   |         | \  /   _     |
~>     | \/   \  /    |         |  \/\  /      | 
~>      --------------           --------------      
~
~Hmmm... just a quick question. Can this .sig be viewed in Xeyed stero?

Yes.  I have very little sucess doing wall-eyed viewing - just need to practice.

This sig, when I view it cross-eyed shows up in 4 levels.  Listing from back to
front are:

   Rick    :                    :       Wilson     :               
           :   --------------   :                  :
           :  |              |  :       O          :
       O   :  |              |  :                  :
           :  |              |  :                  :
  \    _   :  |              |  :                  :            O
   \  /    :  |              |  :                  :            _
    \/     :  |              |  :                  :        \  /
           :   --------------   :                  : 


I find that it takes to steps to view cross-eyed.  First, I get the two images
to overlap inthe center.  Then I have to relax my eyes to allow the focus to
change and "fuse" the images.  I also find it easier to not use my finger or
the markers on the random dot stereograms as they tend to distract me.

The mirror technique sounds similar but I'd have to see it before spouting off
like I know something........:-)

 
--
***  Curt Swanson  ***  sonic@romulus.cray.com  ***  IOTTMCO  *********
HOME:n - That mythical place where you can go and relax.......
I'd rather be in a coma.........
Newsgroups: alt.3d
From: thurmond@helios.aero.org (Rick Thurmond)
Subject: Re: How do I generate the two views for a 3d image (LCD glasses)
Organization: Aerospace Corporation
Date: Wed, 26 Aug 1992 18:30:21 GMT

According to the CrystalEyes Handbook (available from Reel 3D
at 310-837-2368), you should use the second procedure, moving
the camera from left to right while keeping it aimed straight
forward.  Let me know how it works.
					--Rick
					(thurmond@aerospace.aero.org)


Newsgroups: alt.3d
From: svenema@gucis.cit.gu.edu.au (Sven Venema)
Subject: Re: How do I generate the two views for a 3d image (LCD glasses)
Organization: Griffith University, Brisbane, Australia.
Date: Fri, 28 Aug 92 08:50:32 GMT

rick@tekig1.PEN.TEK.COM (Fredrick Wilson) writes:

>      Rick   Wilson             Rick Wilson       Cross-eyed STEREO
>      --------------           --------------
>     |       O      |         |      O       |
>     |    O         |         |     O        |    rick@sable.pen.tek.com
>     |              |         |              |    Tektronix
>     \    _     O   |         |\    _  O     |    Beaverton, Orygun
>     |\  /      _   |         | \  /   _     |
>     | \/   \  /    |         |  \/\  /      | 
>      --------------           --------------      

Hmmm... just a quick question. Can this .sig be viewed in Xeyed stero?

I'm starting to experiment a bit with Xeyed stereo and am finding that I
can (with this .sig) look at it crosseyed and get some sort of effect.
I'm not really sure if it is actually stereo or not. When I Xeye, I
end up with three images. I have tried this with other Xeyed piccys that
I have found and invariably get the same effect. Something is happening but
I am not able to focus in on the image (or bring the images together).
Also, when I Xeye, I can see two images of my finger (which I use to get
the Xeye depth) and I can slowly bring these two images together. The
closer the finger images get together, the closer I seem to get to a 3d
view, but I just can't seem to get the thing in focus properly.

So, the question is, what am I doing wrong, and is there anything I can
practice on. Could someone please post a Xeyed stereo picture and give a
_detailed_ description of what appears in 3d, where it appears and the
distance from the screen/paper which it is viewed from.

On an other topic, I came across a book the other day which had a random
dot stereogram in it. I was able to view this and the results were pretty
amazing (for me anyway) which is why I read this newsgroup now :) 
Anyway, the rds had two boxes one on each facing page, and it was
viewable by placing a mirror in the middle of the page, putting your
nose on the mirror and looking at the mirror image of one object with
the left eye, and the unmirrored image of the other object with the right
eye. This produced an absolutely crystal clear 3d tower and _BLEW_ me 
away! The book didn't go into too much detail into how and why this
viewing technique works, and I was wondering if anyone could describe

a) why it works

b) how it works

c) what is the difference between this technique and Xeyed/walleyed viewing?

Thanks,
Sven Venema

-- 
          ___       ___  __   ___  ___   __
         (__  (  ) (__  |  | (__  | | | |__| 
         ___)  \/  (___ |  | (___ | | | |  | @gucis.cit.gu.edu.au        
                       
Newsgroups: alt.3d
From: pjordan@rp.CSIRO.AU (Patrick Jordan)
Subject: Alphabetically first newsgroup (was Re: POETRY)
Organization: CSIRO Division of Radiophysics, NSW, Australia
Date: Thu, 3 Sep 1992 23:37:11 GMT

In article <1992Sep2.162901.7872@nmt.edu>, kelly@nmt.edu (kelly) writes:
> 
> Nice poem ...
> 
> BUT, we've got to make a new newsgroup: alt.2d, so that IT can be the
> default newsgroup to which the uninitiated post---and thus unclutter
> our 3-D discussions.  Plus, we can discuss the latest 2-D random-dot
> monograms there. :)
> 
> --k
> 

I agree.

-- 

Be seeing you!

Patrick.

------------------------------------------------------------------------------
Patrick Jordan                      |          _
CSIRO Division of Radiophysics      |        // \   I am not a number,
NSW, Australia                      |       /( 6 )  I am a free man.
pjordan@rp.csiro.au                 |      () \_/
------------------------------------------------------------------------------
Newsgroups: alt.3d
Subject: <None>
From: xxiong@vax1.umkc.edu
Date: Mon, 31 Aug 1992 23:52:50 GMT
Organization: University of Missouri - Kansas City



Newsgroups: alt.3d
From: mzaransk@ux4.cso.uiuc.edu (Marcin B Zaranski)
Subject: poetry
Summary: original poem
Organization: University of Illinois at Urbana
Date: Thu, 3 Sep 1992 04:26:09 GMT

only the frozen fingers 
plow the night searching 
life
winter finds them lost in
the labyrinth of shadows.

by Marcin Zaranski
Newsgroups: alt.3d
From: test h
Subject: test
Summary: nothing
Keywords: test
Organization: University of Lethbridge
Distribution: alberta
Date: 27 Aug 92 16:40:21 GMT

this is a test
bye
From: parker_n@kosmos.wcc.govt.nz
Newsgroups: alt.3d
Subject: Help me with 3d objects
Date: 23 Aug 92 21:57:49 GMT
Organization: Welligton City Council, Public Access.

Hello there,
Can anyone out there tell me how I can animation 3d objects, ie stuff like
vector objects,(the objects you see in 3d type games).
How do you move,rotate them ??
One other thing, when drawing solid 3d objects how do you know what side to do
first???
Any help would really be appreciated heaps 
Please, if your can give me some code can you do it in basic!!!
(The only language I can programm in!!)
Cheers
Nicholas Parker
Newsgroups: alt.3d
From: u8902989@cs.uow.edu.au (Chung Ming Liu)
Newsgroups: alt.3d
Subject: How to playback raw binary anime sound on the Mac ?
Date: 27 Aug 92 07:36:11 GMT
Organization: Dept of Computer Science, Wollongong University, Australia

I've downloaded some anime sound from ocf.berkeley.edu in raw binary format.
And I would like to know, how to change their header so that application like
SoundEdit can them playback, or Is there any applications or DA available can
playback raw binary sound files? if available please tell me where can I get
them (FTP sites).



Chung Ming Liu
University of Wollongong, Australia.
Dept. of Business Systems
Internet : u8902989@cs.uow.edu.au
Newsgroups: alt.3d