HDTenEightyP/NetNews huggingface dataset:
From: bercov@bevsun.bev.lbl.gov (John Bercovitz)
Newsgroups: alt.3d
Subject: Re: Stereo World
Date: 11 Nov 1992 00:14:37 GMT
Organization: Lawrence Berkeley Laboratory, California
NNTP-Posting-Host: 131.243.192.10
Keywords: 3d

In article <doogie.721106576@vincent2.iastate.edu> doogie@iastate.edu 
(Matt R Kelly) writes:

>  I've heard people mention the magazine _Stereo World_ in this group from
>time to time.  Could someone give me a short review of the magazine?  What
>kinds of things are in it?  Articles about techniques as well as the images

You get this magazine when you join the National Steresoscopic Association.
It has all the things you've mentioned plus equipment articles by one of
the folks at Reel 3D and also lots of history and old stereo views such
as are used in a Holmes stereoscope.

I joined when John Weiler was on the old stereo mailing list.  John was/is?
the secretary of the NSA.  His address was/is jww64@cas.org   You still out
there, John?  Try to contact him for more info.

John Bercovitz     (JHBercovitz@lbl.gov)

Newsgroups: alt.3d
From: rhca80@melton.sps.mot.com (Henry Melton)
Subject: A 3d illusion observation
Originator: rhca80@melton.sps.mot.com
Organization: none
Date: Mon, 9 Nov 1992 18:51:07 GMT

I observed an interesting 3d illusion this sunday morning while
sitting in church.  I had a bible in my hand and noticed that the
embossed lettering on the cover appeared to be floating .25 inch above
the cover.

Details:
The bible was a low cost NIV version, black with fake-leather binding.
The "leather" texture consisted of dominantly vertical groves in a
random like distribution.  The cross-section of the cover was
something like this (only rounded on the top):

    __    _________    _____   ______
      \  /         \  /     \ /
       \/           \/       V
  
    <-------- .5 inch -------------->

The lettering was gold-colored stamped letters with maybe .02 to .05
inch depression.  

The lighting was a series of hanging decorative bulbs 20 feet up and
seperated by 10 to 15 feet.  The illusion only occurred when the cover
of the bible caught the "glare" from the overhead lights.  

I conjecture that the point-source nature of the light caused the
textured cover to appear shifted right-eye vs. left-eye as the light
bounced off the curved structures.  The embossed letters had no curved
surfaces and thus had no differences to fool my depth perception.

This kind of illusion would appear to be highly light-source
dependent, so it probably wouldn't have much commercial use, but it
was interesting--a stable 3d effect with no funny viewers and no
eye-training required. 
Newsgroups: alt.3d,comp.graphics.animation,comp.graphics,comp.graphics.visualization
From: guest@scc-term1
Subject: Re: 3D animation / Ray tracing info
Organization: Computer Center, National Central University
Date: Thu, 5 Nov 1992 06:14:23 GMT

In article <1992Oct30.093800.19033@u.washington.edu> eylerken@milton.u.washington.edu (Ken Eyler) writes:


>      I am looking for a few things in the animation/raytracing aspect.

>    I 1.  I need to know what software is available for a 486/50 machine and
>          where I can get it and any info about.  PD or commercial.

>      2. Some REALLY good books that deal with things of this nature.

>      3.  And does anyone have a Pyramid shape ( 3d of course ) of some sort th 
>          I could use with POV1.0?


>thanks in advance.t to do 3d animation
>      Thanks in advance.  



>:ken


@j:\trmp104b\news



		



>:eylerken@u.washington.edu



>.



dir
	



N					
Newsgroups: alt.3d
From: sphillips10@cc.curtin.edu.au (Trevor Phillips)
Subject: Virtuality - & homemade VR ...
Organization: Curtin University of Technology
Date: Fri, 13 Nov 1992 03:18:17 GMT

Western Australia FINALLY got a look at the Virtuality system these last few 
days, and it'll be gone after tomorrow. I had a go, and it was as I expected, 
pretty cool !!! The technology did seem a tad old considering what is possible 
today, and the price tag of $110 000 per machine seemed somewhat overpriced. 
Does anyone know what new stuff they're bringing out to the public ? Or is it 
still only special research areas which get the newer tech. ?

Also, I have read here about a VR mag on how to build your own system ... Does 
anyone know if this is available in Australia ? Or must I mail overseas ... And 
how much was it for the six (I think) parts ?

Thanks in advance ...

Trevor Phillips

+-------------------------------------------------------+----------------------+
| Internet: SPHILLIPS10@cc.curtin.edu.au                | Curtin University of |
|           SPHILLIP01@cc.curtin.edu.au                 |      Technology      |
| Bitnet: SPHILLIPS10%cc.curtin.edu.au@cunyvm.bitnet    |                      |
| UUCP  : uunet!munnari.oz!cc.curtin.edu.au!SPHILLIPS10 |    Trevor Phillips   |
+-------------------------------------------------------+----------------------+
| "... and thank you for bringing up such a painful subject. While you're at   |
| it, why don't you give me a nice paper cut and pour lemon juice on it ..."   |
|                             - Miracle Max, from The Princess Bride           |
+------------------------------------------------------------------------------+
Newsgroups: alt.3d
From: manand@ntuix.ntu.ac.sg (Anand Asundi)
Subject: Holography and 3D graphics
Organization: Nanyang Technological University - Singapore
X-Newsreader: TIN [version 1.1 PL6]
Date: Wed, 11 Nov 1992 02:54:22 GMT

There was an interesting paper I read which made use of an LCD projection panel to display the graphics image and which acted as a source to generate a hologramI do not have the reference at hand as I am currently on leave  and all my papers are at Hong Kong. But if anyone is interested, I can get someone at HK to post the reference to me

AAsundi
Newsgroups: alt.3d
From: gardabr@unix1 (Gard Eggesbo Abrahamsen)
Subject: Here's my surface sort routine
Organization: University of Trondheim, Norway
X-Newsreader: TIN [version 1.1 PL6]
Date: Tue, 10 Nov 92 12:45:18 GMT

It was written in 680x0 assembler, but it should work on a Z80 processor
as well. Can't say if it will work on 80x86, though...

; 3d surface sort routine
surfacesort:    nop
                rts     ; rst for Z80a assembler
; end of 3d surface sort routine

/Gard Eggesboe Abrahamsen
    "Why sort what you don't have to sort?"
Newsgroups: alt.3d
From: robert@alkymi.unit.no (Robert Schmidt)
Subject: Re: Here's my Intel surface sort routine
Organization: Norwegian Institute of Technology
Date: Tue, 10 Nov 92 16:17:52 GMT

In article <1992Nov10.124518.28404@ugle.unit.no>, gardabr@unix1 (Gard Eggesbo Abrahamsen) writes:
> It was written in 680x0 assembler, but it should work on a Z80 processor
> as well. Can't say if it will work on 80x86, though...

I can announce that I have ported Gard's excellent surface sorting routine
to the Intel family of chips, i.e. the following routine will run
perfectly on both 8086, 8088, 80286, 80386, 80486, all SXes, and chances
are good for that it will run successfully on Intel's new Pentium chip
(the '586', that is).
 
; 3d surface sort routine (Intel 80x86/Pentium version)
surfacesort:    nop
                ret
; end of 3d surface sort routine

Bright minds may see that my routine can be highly optimized by removing the
nop, like this:

; 3d surface sort routine (Intel 80x86/Pentium version)
surfacesort:    ret
; end of 3d surface sort routine

Further speed gains can be achieved by not calling the routine at all.

Good luck, and have phun!

Robert
From: danielg@autodesk.com (Daniel Green)
Newsgroups: alt.3d
Subject: Re: RDS effects
Date: 10 Nov 92 01:33:41 GMT
Reply-To: danielg@autodesk.com
Organization: Autodesk, Inc.

In article uupcb@pcb.batpad.lgb.ca.us, dennis.kier@pcb.batpad.lgb.ca.us (Dennis Kier) writes:
> References: <mdavey.719742344@unix1.tcd.ie>
> 
>   mdavey@unix1.tcd.ie (Matthew Davey)MD  wrote:
> MD>
> MD>Another little thing: once I got the hang of focussing on things that
> MD>weren't there for playing with Stereograms I tried the same trick with
> MD>other things.  Taking almost any regular pattern, such as a wire fence
> 
> This will often work for the regular patterns in print adds, or the
> printing inside envelopes - companies do this a lot. Sometimes the
> printer will use odd patterns that cause the result to look like
> shingles, or you can see different levels with different angles of your
> eyes.
> 
> Stereo World magazine had an article on this sort of repeated pattern on
> candy wrappers, and other things. I now have a collection, mostly from
> the inside printing on envelopes.
 
Has anyone else noticed that the x-eyed technique provides a really fast
way to solve those puzzles that show two pictures that have only a few
subtle differences?  Fuse those image pairs, and the differences pop right
out as sort of sparkly areas.

---
Daniel Green
danielg@autodesk.com
      ___________          ___________
      |         |          |         |
      |  _________         | _________
      |  |       |         | |       |
      |  |  _______        | | _______
      |  |  |     |        | | |     |
      ---|  |  _____       --| | _____
         ---|  | D |         --| | D |
            ---|  G|           --|  G|
               -----             -----
From: rcaslis@hydra.acs.uci.edu (Russell Caslis)
Subject: Re: rendering speeds
Newsgroups: alt.3d
Organization: University of California, Irvine
Date: 5 Nov 92 18:24:19 GMT

In article <mba3.720922287@Isis.MsState.Edu> mba3@ra.msstate.edu (Michael Boyd Adams) writes:
>I am not familiar with measuring the speed in poly/second rates,
>but I am sure that the new Amiga 4000 would blow that away.
>Don't have one myself, but I would like to have some info on them...
>

The A4000 does NOT have a DSP.  Commodore has announced that this is something
they are working on as an expansion.

They haven't even said 'Real Soon Now'.



--
Russ Caslis
rcaslis@uci.edu
From: Commodore_&_Computers@equinox.gen.nz (Cc)
Newsgroups: alt.3d
Subject: Re: 3d displays
Date: 9 Nov 92 11:29:24 +1200
Organization: Equinox Networks
X-Newsreader: TIN [version 1.1 PL6]
From: danielg@autodesk.com (Daniel Green)
Newsgroups: alt.3d
Subject: Re: Request for Human Skeleton
Date: 10 Nov 92 01:27:54 GMT
Reply-To: danielg@autodesk.com
Organization: Autodesk, Inc.

In article 761@capmkt.COM, charles@capmkt.COM (Charles Neveu) writes:
> danielg@autodesk.com (Daniel Green) writes:
> >In article 11099@informix.com, proberts@informix.com (Paul Roberts) writes:
> >> 
> >> Does my memory deceived me, or is it not the case that some place
> >> like Colorado they are digitizing a complete human body by actually
> >> cutting it into very thin slices (like 0.1 mm or something) and
> >> scanning each one optically? Presumably it must have been treated
> >> in some way to induce a kind of ultra rigor mortis ...
> 
> >That would be a really dumb way to do it.  A good MRI scan would easily
> >give you all the data you'ld need (after filtering it through an iso-
> >surface program).
> 
> Not at all; just a very slow way to do it. Tissue that is fixed and
> well-stained is colorful, and the resolution is limited by wavelength
> of light. I don't think that the resolution of MRI is more than 0.5
> mm.  Even then, MRI measures primarily proton density, which
> translates to water density, plus some weaker 2nd order effects.
> Stains can bring out lots of other stuff.  MRI is still pretty noisy,
> as well.

Ok, ok!  Use a CAT scan then.  The wavelength of x-rays should be short
enough for anyone's needs, and they measure density which is exactly
what you need to delineate the bones which was the original problem.

Some people have responded here that it would be neat to be able to use
CG to "peel back layers".  I've seen this done well by interactivly
adjusting the threshold value of the iso-surfaces generated from MRI
data.  The ability to visualize these higher-dimensional data sets falls
into the field of "volume visualization" which is still in it's infancy.
VR and CG techinques provide some tools, but there are no "best ways" here.


---
Daniel Green
danielg@autodesk.com
      ___________          ___________
      |         |          |         |
      |  _________         | _________
      |  |       |         | |       |
      |  |  _______        | | _______
      |  |  |     |        | | |     |
      ---|  |  _____       --| | _____
         ---|  | D |         --| | D |
            ---|  G|           --|  G|
               -----             -----

Newsgroups: alt.3d
From: ag344@yfn.ysu.edu (Larry M. Glazer)
Subject: Re: lightwave -> dxf
Organization: Youngstown State University/Youngstown Free-Net
Date: Thu, 5 Nov 1992 03:45:14 GMT


I would be most grateful if anyone could tell me about the 
program "3-D Studio", referred to in this message.  Would it
be, by any chance, a stereo version of Virtual Reality Studio?
Thanks in advance for any enlightenment (I have a 286-based system
with VGA).
Larry Glazer
-- 

From: dondd@hpmwtd.sr.hp.com (Don Dillon)
Date: Tue, 10 Nov 1992 17:30:37 GMT
Subject: Re: Why no Holography?
Organization: HP Santa Rosa Site (SRSD MWTD)
Newsgroups: alt.3d

>| I certainly deal with it.  It's been a big hobby ever since
>| I got introduced to it a while back.  Who else wants to
>| talk this up?  How would we start a new newsgroup?
>
>  Why would one start a new group? It seems to be definitely within the
>limits of this group, at least as much as image processing discussions,
>or "which 3D camera." Please don't run off, there are a lot of us who
>would like to follow the discussion, even if the hardware is currently
>out of reach of many of us, by priority if not by actual cost.

	I agree that this should be discussed in this forum.  One reason is
that it deffinately fits into 3D realm, and also because not everyone can
enjoy recieving 'every' newgroup fed onto the net.  I had to beg, threaten,
and bribe with candy bars to just recieve this group.

-----------------------------------------------------------------
Don { I'm a multidimensional person } Dillon

INTERNET : dondd@sr.hp.com
TELNET   : 577-3690
PHONE    : 707-577-3690

Newsgroups: alt.3d
From: jnr@panix.com (Josh Rubin)
Subject: Re: Want Photo 3D mailing list?
Date: Wed, 11 Nov 1992 03:37:12 GMT
Organization: PANIX Public Access Unix, NYC

In <27357@dog.ee.lbl.gov> bercov@bevsun.bev.lbl.gov (John Bercovitz) writes:

>We seem to have lost our photo 3D mailing list.  Should we start another?

>John Bercovitz     (JHBercovitz@lbl.gov)

Yes!!!

Joshua Rubin (jnr@panix.com)
From: davidsen@ariel.crd.GE.COM (william E Davidsen)
Newsgroups: alt.3d
Subject: Re: Why no Holography?
Date: 9 Nov 92 21:17:46 GMT
Reply-To: davidsen@crd.ge.com (bill davidsen)
Organization: GE Corporate R&D Center, Schenectady NY

In article <BxB3oB.13t@news.cso.uiuc.edu>, jem21176@uxa.cso.uiuc.edu (Jon E. Meyer) writes:

| I certainly deal with it.  It's been a big hobby ever since
| I got introduced to it a while back.  Who else wants to
| talk this up?  How would we start a new newsgroup?

  Why would one start a new group? It seems to be definitely within the
limits of this group, at least as much as image processing discussions,
or "which 3D camera." Please don't run off, there are a lot of us who
would like to follow the discussion, even if the hardware is currently
out of reach of many of us, by priority if not by actual cost.

-- 
bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
    Keyboard controller has been disabled, press F1 to continue.
Newsgroups: alt.3d
From: meek@fizzy.csu.murdoch.edu.au (Lindsay Meek)
Subject: Re: rendering speeds
Organization: MPS Physics
Date: Wed, 11 Nov 1992 02:01:49 GMT

In article <mba3.720922287@Isis.MsState.Edu> mba3@ra.msstate.edu (Michael Boyd Adams) writes:
>From: mba3@ra.msstate.edu (Michael Boyd Adams)
>Subject: Re: rendering speeds
>Date: Thu, 5 Nov 1992 00:11:27 GMT

>bross@splatter.nas.nasa.gov (Wilson S. Ross) writes:

>>What sorts of poly/second rates are common these days? I know one group
>>of Russian programmers that gets 3500 on a 33 MHz 486 rendering a 3d scene;
>>wondering how close to a record this might be.

>>Bill Ross

>I am not familiar with measuring the speed in poly/second rates,
>but I am sure that the new Amiga 4000 would blow that away.
>Don't have one myself, but I would like to have some info on them...

	Wouldn't it be better to measure graphics rendering output in
pixels per second? for a fixed display format.
	A fairly well supported format between machines is 320X200
in 16-colours (becoming 256 with SVGA,AA Chipset etc..).
	It would be interesting to see how various consumer market machines
like the IBMs and Amigas compare to each other. 
	And of course, how easily the TI34020 GSP whips both specs ;)
Lindsay Meek
From: reno@cps.msu.edu (Gerald L Jr Reno)
Newsgroups: alt.3d
Subject: stereogram maker (description)
Date: 9 Nov 92 19:53:26 GMT
Organization: Dept. of Computer Science, Michigan State University
Originator: reno@arctic.cps.msu.edu


  Here it is; a program that        Here it is; a program that     
  creates double-image              creates double-image           
  stereograms fromascii  text       stereograms from ascii text    
  files!                            files!                         
                                                                   
  The main program is written in    The main program is written in 
 C++ ; there is also a utility      C++; there is also a utility   
  written inC  that converts        written in C that converts     
  any text file to one that         any text file to one that      
  looks like this one!              looks like this one!           
                                                                   
  Basically, what this program      Basically, what this program   
  does is take a file that          does is take a file that       
  looks likethis:                   looks like this:               
                                                                   

123456789012345678901234567890
#layers 5
#begin 0
+---+   +---+
|   |   |   |
|   |   |   |
+---+   +---+

+---+   +---+
|   |   |   |
|   |   |   |
+---+   +---+
#begin 1


   +-----+
   |     |
   |     |
   |     |
   +-----+
#begin 2




      !


  And turns it into one that       And turns it into one that    
  looks likethis:                  looks like this:              

  +---+   +---+                    +---+   +---+ 
  |   |   |   |                    |   |   |   | 
  | +-----+   |                    |  +-----+  | 
  +-|-+   |---+                    +--|+   +|--+ 
    | !   |                           |  !  |    
  +-|-+   |---+                    +--|+   +|--+ 
  | +-----+   |                    |  +-----+  | 
  |   |   |   |                    |   |   |   | 
  +---+   +---+                    +---+   +---+ 
                                                                 
  I shall post ashell archive      I shall post a shell archive  
  version, and atar.Z  version.    version, and a tar.Z version. 
  The tar.Z version contains       The tar.Z version contains    
 Sun-4  binaries.                  Sun-4 binaries.               

Jerry Reno(reno@cps.msu.edu)       Jerry Reno (reno@cps.msu.edu)
Newsgroups: alt.3d
From: watters@darwin.genetics.washington.edu (Mike Watters)
Subject: Re: Want Photo 3D mailing list?
Organization: University of Washington   
Date: Tue, 10 Nov 1992 21:16:05 GMT

I would vote enthusiastically for change!  :)

In other words... I think it would be for the best to resurect the stereo
photography mailing list.  Not only would it bring back all those without
access to this group, but it would (hopefully) get rid of those pesky
"testers". 

mike

--
Mike
watters@genetics.washington.edu
Dept of Genetics, Univ of Washington  Seattle
(d) 206-543-1934   (e) 206-361-1156 
Newsgroups: alt.3d
From: kingpin@mole.gnu.ai.mit.edu (Joe Smooth)
Subject: Re: 3d RDS Programs Comming
Organization: None
Date: Thu, 5 Nov 1992 21:38:51 GMT

Wow that should be pretty good when it comes out! I've been waiting for a
program like this!
Newsgroups: alt.3d
From: pugliese@ghost.dsi.unimi.it (Marco Pugliese)
Subject: Re: Why no Holography?
Organization: Computer Science Dep. - Milan University
Date: Fri, 6 Nov 1992 15:07:20 GMT

13501DJK@MSU writes:

>Why is it that I seldomly see any discussion of holography here?
>Does anyone reading this group deal with holography?

It's really a great idea.
At present I'm not dealing with holography, but I'd love to know anything about 
it.
If someone can start explaining in poor words the basical concepts and the use
that 3d computer graphic can make of holography, I think it could be a great 
take off for may be a new group.
-- 
                                               CIAO.

===============================================================================
  Marco Pugliese   *| Dipartimento di Scienze |*         ADDRESSES:
From: sherman@michael.nmr.upmc.edu (Sherman Uitzetter)
Newsgroups: alt.3d
Subject: PD or Shareware Ray Tracer for Mac?
Date: 9 Nov 92 15:54:15 GMT
Organization: Pittsburgh NMRI
X-UserAgent: Nuntius v1.1.1d12
X-XXDate: Mon, 9 Nov 92 10:53:40 GMT



    The subject pretty much says it all but, does anybody
know of a good public domain/shareware raytracer for the
mac and where to get it?

Thanks in advance,
Sherman.


please send e-mail to sherman@michael.nmr.upmc.edu
Newsgroups: alt.3d
From: beck@irzr17.inf.tu-dresden.de (Andre Beck)
Subject: Re: WANTED: simple 3D hidden line/surface-Unix/X11 prog. (FAQ?)
Reply-To: beck@freia.inf.tu-dresden.de
Organization: Dept. of Computer Science, TU Dresden, Germany.
Date: Tue, 10 Nov 1992 16:42:07 GMT


Hi,

I only can say: get X3d V2.2 (or newer...)

It offers you Wireframe, Hidden Line and Hidden Surface Views,
both colored, mono, or Red/Blue for Stereo Glasses..

And its really fast, if your machine is, too :)



--
,------------------------+---------------------------------------------.
| Andre' Beck (ABPSoft)  |   TCP/IP-Mail: beck@freia.inf.tu-dresden.de |
| HG R 142               |   VMS        : hermes::beck                 |
+------------------------+---------------------------------------------+
|       Windows is the best placebo against MS-DOOF headaches !        |
`----------------------------------------------------------------------'
From: jem21176@uxa.cso.uiuc.edu (Jon E. Meyer)
Newsgroups: alt.3d
Subject: Re: Hologram Video Game
Date: 13 Nov 92 15:01:38 GMT
Organization: University of Illinois at Urbana

ender@cs.montana.edu (Jacob Cormier) writes:

>Has anyone else seen the hologram video game at the arcades?  It is of the same
>type as Cliff Hanger, Space Ace, and Dragons Lair.  Its called Time Traveller,
>and you play a cowboy that somehow got chosen as the DefenderOfTheUniverse(tm),
>and you go through a bunch of scenes where every once in a while you have to
make a decision as to what to do, like fire your gun, or jump over a laser beam.
>It was filmed with live actors and has real voices in it.  It even has special
>effects, so someone knows how to manipulate the 3D film.

It's not 3D.  It's a fake. SEGA is using advertising hype to claim it
is a hologram when really it's only a mirror trick.  There's no
parallax and the object is a flat screen projected into space.

They are using the same idea again in a newer game, called Holoseum.
Now the figures are generated by computer, and it looks better with
their system because they also draw shadows under the characters like
they're standing on a glass surface.  It is impressive the way they
used what they made, but it's a far cry from real 3D or holography.

Jon Meyer
Newsgroups: alt.3d