HDTenEightyP/NetNews huggingface dataset:
From: dlinder@cse.unl.edu (Daniel Linder)
Subject: Programs to convert to/from GL/DL/MPEG wanted!
Organization: University of Nebraska - Lincoln
Date: Wed, 26 Aug 1992 04:48:22 GMT

Hello!

  Does anyone out there have or know where I can FTP a program to
convert GL's to DL's?  GL's to MPEG's?  Or, any combination of the
three?  

  Thanks for any help in advance.

  Dan

--
| Dan Linder - Comp. Eng. - Junior      | Ensign Ro: "Who are you?"            |
| dlinder@cse.unl.edu                   | Guinan: "I told you; I am Guinan,    |
| University of Nebraska - Lincoln      |  I tend bar, and I listen."          |
| Disclaimer: My university does not listen to me, why would I speak for them? |
Newsgroups: comp.graphics,sci.image.processing
From: atul@nynexst.com (Atul Chhabra)
Subject: Scanning E size engineering drawings
Reply-To: atul@nynexst.com
Organization: NYNEX Science & Technology
Date: Fri, 28 Aug 92 18:09:27 GMT

I need to scan about thirty E size engineering drawings into 
tiff format images at 300 dots per inch. Is there any one out
there who can provide this scanning service for a fee? Any 
help would be appreciated. I am sorry if this is not the right
newsgroup to post this querry. Please suggest other newsgroups
where I should post this.

Thanks.
Atul Chhabra
==============================================================
Atul K. Chhabra                        Phone: (914)644-2786
Member of Technical Staff                Fax: (914)644-2404
NYNEX Science & Technology          Internet: atul@nynexst.com
500 Westchester Avenue
White Plains, NY 10604
==============================================================
From: ratzan@rwja.umdnj.edu (Lee Ratzan)
Newsgroups: comp.graphics
Subject: conversion to hpgl
Summary: conversion to hpgl
Keywords: hpgl
Date: 1 Sep 92 18:37:13 GMT
Distribution: comp
Organization: Robert Wood Johnson Medical School, Piscataway NJ


Does anyone know of any public domain utilities which
conver various graphics forms to hpgl (Hewlett-Packard
Graphics Language)?

Thank you


Lee Ratzan                                  email: ratzan@umdnj.edu
Academic Computing Service                  
Rm S-B11                                    
University of Medicine and Dentistry of NJ  
675 Hoes Lane                               voice: 908-463-4171
Piscataway, New Jersey 08854                fax:   908-463-5252
-------------------------------------------------------------------
From: cs8023@ee21.ncu.edu.tw (ee76536)
Newsgroups: comp.graphics
Subject: Suggest for store 3D objects
Date: 27 Aug 92 06:52:18 GMT
Organization: Dep. of EECS, National Central University, Chungli, Taiwan, R.O.C.

Hi, all graphics experters:
Recently I was writing a 3D RPG (role playing game) like Origin's
Underworld, but now I met a difficulty, I cannot handle a good
data structure for 3D onjects (wall, tree, something like this), do you
have any good idea for this so that I can efficiently manage these
objects? (for object detecting.)
all useful is welcomed, and I may send you a beta release if I success.
Thanks anyway.
best wishes
tony
-- 
>>> Anthony Li <Li3, Shih4 Hao2><Li:fruit's Name><Shih:Scholar><Hao:Hero>   <<<
<<< Institute of CSEE, National Central Univ, Chungli, Taoyuan, Taiwan, ROC >>>
<<< Bitnet:	U230700@twncu865.bitnet					    <<<
>>> Internet:	U230700@ncu865.ncu.edu.tw oper2@ncuee.ncu.edu.tw	    >>>
Newsgroups: comp.graphics,comp.infosystems.gis
From: sheldon@iastate.edu (Steve Sheldon)
Subject: Scanning images & different formats
Organization: Iowa State University, Ames IA
Distribution: usa
Date: Wed, 2 Sep 1992 20:30:57 GMT

I'm looking for some suggestions of possible solutions.

 We have a need to scan 11"x17" map sheets for use with a program called
LT Plus, which is from the forestry service.

 We can borrow the use of a scanner right now that we know works.
However it's somewhat of an inconvenience, and we'd need to purchase
this card from Houston Instruments for $2500 to make it work.

 We've been searching for alternatives.  For $750 we can purchase
an HP B&W Scanjet, and scan the sheets in two parts.
 However, the software that comes with the Scanjet only supports standard
DOS graphics formats like PCX and TIFF.

 LT Plus doesn't like any of these.  I'm not familiar with any of the ones
LT Plus supports, but they are:

 .gis  .optr9  .ras  .rlc  .rstr  .rle1

 We're looking for a solution.  A scanner which will do 11"x17" sheets would
be ideal.  Or software to drive the Scanjet and produce one of the above
formats.  Or software which will convert pcx, tiff, or anything the scanjet
supports to one of the formats that LT Plus supports.

 Our goal would be to spend less than $2500 on any hardware/software
combination.  We can use software under Ultrix, SCO Unix, or MS-DOS.

 In the meantime we'll keep looking around.  Any help would be appreciated.

Thanks,
-- 
Steve Sheldon         sheldon@iastate.edu
Iowa Cooperative Soil Survey Resource Unit
2142 Agronomy, Iowa State University  (515) 294-5429

Newsgroups: comp.graphics
From: srinivas@lgc.com (Manapragada Srinivas)
Subject: Curvature of a Surface
Followup-To: comp.graphics.visualization
Organization: Landmark Graphics Corporation
Date: Thu, 27 Aug 1992 05:45:17 GMT


Hi,

	How is the curvature of a parametric surface defined, ie. if I have
	a surface -
			      -      - 
			     | x(u,v) |
		X = X(u,v) = | y(u,v) |
			     | z(u,v) |
			      -      - 
	
	what is the expression for the curvature of the surface at u,v ?


	Alternatively if I a have an explicitly defined surface such as

		z = f(x,y)

	what is its curvature at a given point x,y ?



	I would appreciate any help regarding the above. If there are a
	number of replies, and the answer to the above is non-trivial I shall
	post a summary.

Thanks in advance,
Srinivas
--
Yonder, beyond the event horizon!
From: pustule@cats.ucsc.edu (Thaddeus H. Wood)
Newsgroups: comp.graphics
Subject: 3D-Studio -- HELP
Date: 3 Sep 92 09:10:55 GMT
Organization: University of California; Santa Cruz
NNTP-Posting-Host: am.ucsc.edu


Hi there.  I'm posting this on behalf of a friend of
mine, and replys are fine to my address.

----------------------------------------------------
I am using 3d studio, release 2, and cannot 
import ATM fonts, like how I thought I was supposed
to be able to.  Can someone please give me a detailed
description of how to go about doing this, assuming
that it is possible?  I direly need to be able to
have 3d writing in my animations.  Thanks!
----------------------------------------------------

So, there you go.  Please respond to me.  Thank you.

--
Thaddeus Wood
pustule@cats.ucsc.edu
+1 408.423.8733
Newsgroups: comp.graphics
From: thad@lever.asd.sgi.com (Thad Beier)
Subject: Re: 3D Digitizers...again
Reply-To: thad@sgi.com
Organization: Silicon Graphics
Date: Wed, 26 Aug 1992 16:10:06 GMT

The only 3D digitizers I am familiar with are made by
Cyberware, in Monterey, California.  They make at least
two models, one that rotates around the subject, and one
that translates along a beam.  Each scanner outputs one
slice of the 3D model every little bit that it travels.  They
also capture a color image at the same time as they generate
the 3D model.

I have used one of their products a few times, and they seem
well made, and to work fairly well. 

-- 
Thad Beier..Silicon Graphics..415)390-1028..thad@sgi.com..C-172A N7770T.....FLY!
From: drkszk@ocf.berkeley.edu (Derek Suzuki)
Newsgroups: comp.graphics
Subject: 3-d animation
Date: 2 Sep 1992 19:11:11 GMT
Organization: U.C. Berkeley Open Computing Facility
NNTP-Posting-Host: tornado.berkeley.edu
Keywords: 3d clip animation

	Hello all.  I'm attempting to do 3d animation of multiple objects
under OS/2 2.0 PM.  Every source I've checked suggests that I first sort
every visible object from back to front, then draw them in order of
decreasing distance.  For single frame this seems logical, as the nearer
objects would be drawn over the more distant ones.
	The problem is that once the frame is done, I immediately want
to start working on the next one.  If this works at a reasonable speed
(I'm assuming an accelerator here) wouldn't the objects in back flicker
to the front as they were drawn?  Under DOS I would use page flipping,
but that's not an option with PM.  How does everyone else manage this?
	Thanks for any suggestions.

	Derek
	drkszk@ocf.berkeley.edu
From: reddy@spso.gsfc.nasa.gov (Jagan Reddy)
Newsgroups: comp.graphics
Subject: gnuplot compilation error on sun .. file system full write failed.
Summary: gnuplot complained file system full during compilation.
Keywords: gnuplot unix compilation
Date: 26 Aug 92 02:24:38 GMT
Organization: Goddard Space Flight Center

Hi,

	When I tried to compile gnuplot it complained that the file system
is full and write failed. But the file system I observed after compilation
failure as 74% only full and it still has atleast 40 MB.

What can be probable reason. Any hints appreciated.

Thanks
Jagan
From: tomw@stephanie.megatek.com (Tom Wright)
Newsgroups: comp.graphics
Subject: Re: SIGGRAPH member benefits
Date: 1 Sep 92 00:15:13 GMT
Organization: Megatek Corporation, San Diego, California

In Article: 29126 of comp.graphics, wrf@ecse.rpi.edu (Wm Randolph Franklin) says,
(regarding article 202245 from Steve Cunningham soliciting member response on 
the future of SIGGRAPH membership benefits and publications):

> Why is ACM preventing conferences from subsidizing the group? ...

Member benefits are a commitment to the members; conference surpluses
vary from year to year with the city and the economy. The idea is that 
direct member benefits should be scaled so that SIGGRAPH knows it can 
deliver them regardless of a given year's conference surplus.

> ...There was one year when the SIGGRAPH
> conference was $1M more successful than anticipated, and ACM insisted
> that the extra money go to ACM and not to the SIG. ... 

Mr. Franklin has been misinformed. The only money paid to ACM from the
conference is for management services supplied to the SIGGRAPH conference
for that year. This is about $140k out of a $5m to $6m budget. (The
conference contracts with many other sources for services as well.) This 
cost is budgeted each year by the conference and is not part of the surplus.
Thus, in the year where we were fortunate enough to have a surplus of over
$1m, all that money went to SIGGRAPH. SIGGRAPH's money is, as with all the
SIGs, turned over to ACM for deposit in a bank account for SIG funds, but
it is earmarked as SIGGRAPH's, and SIGGRAPH earns interest on its funds. 

When there is a conference surplus, the SIGGRAPH elected management has used 
it for a variety of things, including extra member benefits (small conference 
proceedings mailed to the membership), good works (such as seed funding for 
the highly regarded "Mathematics!" project now being funded by NSF), and to 
build the conference reserve (which is used primarily to provide start-up
funding for upcoming conferences before they have income).

The last two conferences combined have produced a combined surplus of
roughly zero, so it is not currently possible for the conference to fund
member benefits. Hence, Steve Cunningham's request for member input.

Keep those ideas coming!

Regards,
Tom Wright
SIGGRAPH Treasurer
wright@siggraph.org
Xref: sparky comp.graphics:9085 alt.graphics.pixutils:2007 alt.binaries.pictures.utilities:780 alt.binaries.pictures.d:4199 alt.binaries.pictures.erotica.d:6672 news.answers:2592
From: rcj2@cbnewsd.cb.att.com (ray.c.jender)
Newsgroups: comp.graphics
Subject: Re: 3D Digitizers...again
Date: 26 Aug 92 20:05:55 GMT
Distribution: usa
Organization: AT&T

In article <p2edfuk@fido.asd.sgi.com> thad@sgi.com writes:
>The only 3D digitizers I am familiar with are made by
>Cyberware, in Monterey, California.  They make at least
>two models, one that rotates around the subject, and one
>that translates along a beam.  Each scanner outputs one
>slice of the 3D model every little bit that it travels.  They
>also capture a color image at the same time as they generate
>the 3D model.
>
>I have used one of their products a few times, and they seem
>well made, and to work fairly well. 
>

	Any idea on how much these babies cost? Thanks.
From: drkszk@ocf.berkeley.edu (Derek Suzuki)
Newsgroups: comp.graphics
Subject: Re: 3-d animation
Date: 3 Sep 1992 00:09:30 GMT
Organization: U. C. Berkeley Open Computing Facility
NNTP-Posting-Host: lightning.berkeley.edu
Keywords: 3d clip animation

	It's been suggested that I draw every 3d frame onto a memory
bitmap, then blt that to screen when it is complete.  However, under
OS/2 PM I can't do page flipping (I only control the applicaion's
window).  I also want to be able to use the GPI primitive functions,
such as the polygon draws and fills.  This would save me a lot of
effort, as well as taking advantage of graphics accelerators.  Is
there an equivalent to page flipping that works well with a GUI?

Derek
drkszk@ocf.berkeley.edu

Newsgroups: comp.graphics
From: steve@monu6.cc.monash.edu.au (Steve Balogh (+61 3 565 4747))
Subject: Re: Image negative to positive algorithm
Organization: Monash University, Melbourne, AUSTRALIA
Date: Fri, 4 Sep 1992 05:50:55 GMT

In article <1992Sep1.093533.3554@mits.com.au> alistair@mits.com.au writes:
>In article <1992Aug28.143906.3553@mits.com.au>, 
>
>Grey-scale images may be converted using:
>
>	<new pixel value> = <white pixel value> - <old pixel value>
>

Can you therefore imply that:

   <new RED pixel value>   = <Full RED pixel value>   - <old RED pixel value>
   <new GREEN pixel value> = <Full GREEN pixel value> - <old GREEN pixel value>
   <new BLUE pixel value>  = <Full BLUE pixel value>  - <old BLUE pixel value>

Or is this too simplistic? :)

Regards,
         Steve

----_--_-_-_--_-__-_------_-__---_-___-_----_-____-_-_--__-_--_--___-_-_-_--__-_
Steve Balogh  VK3YMY   (Maths G.14)   | steve@monu6.cc.monash.edu.au
Monash University, Clayton Campus     |      37 54'38.8"S  145 07'47.1"E ...ICBM
Wellington Road, Clayton.  	      |      +61 3 565 4747 Voice (Office)
Melbourne, AUSTRALIA. 3168	      |      +61 3 565 4746 Fax
From: bthompso@reed.edu (Benjamin Thompson)
Newsgroups: comp.graphics
Subject: What is a good book for Digital Image Processing?
Date: 26 Aug 92 18:38:20 GMT
Article-I.D.: reed.1992Aug26.183820.3934
Organization: Reed College, Portland, OR

What is the one source text for a good introduction to the world
of Digital Image Processing?  I'm looking for a book that covers
enhancement, alteration, compression, and recognition.  I'll summerize
any posts that I get for the rest of the newsgroup.  Thanks -Ben

-- 
Benjamin Thompson                Math Major - Reed College
Internet: bthompso@reed.edu       
Reed College #653 / 3203 SE Woodstock Blvd. / Portland, OR  97202
From: jlc@firewalladaclabs.com (Jean-Luc Chatelain)
Newsgroups: comp.graphics
Subject: Re: What is a good book for Digital Image Processing?
Date: 28 Aug 92 00:28:34 GMT
Organization: Adac Labratories, Milpitas Ca

Digital Image Processing
by Williwam K Pratt
Prentice and Hall (I think)

This is one of the bibles (along with one by Gonzales)

Jean-Luc Chatelain
ADAC Labs 540 Alder Dr Milpitas XCA 95035
From: malcolm@vax.oxford.ac.uk
Newsgroups: ox.general,uk.events,uk.announce,comp.graphics
Subject: UNIRAS UK UG conference + EGUK tutorial
Date: 26 Aug 92 11:37:13 GMT
Organization: Oxford University VAX 6620

Please note that the UNIRAS UK User Group's conference (which has already been
advertised) is being held in Nottingham on the two days following the EGUK
tutorial on Geographical Information Systems.

>>>                                                                        <<<
>>> How about spending three days in Nottingham and attending both events? <<<
>>>                                                                        <<<

-------------------------------------------------------------------------------
Malcolm Austen,                                          Tel: 0(+44) 865 273216
Oxford University Computing Services,                    Fax: 0(+44) 865 273275
13 Banbury Road,                        Email - JANET: malcolm@uk.ac.oxford.vax
Oxford, OX2 6NN                              Internet: malcolm@vax.oxford.ac.uk
England                            EARN/BITNET: malcolm%uk.ac.oxford.vax@ukacrl
-------------------------------------------------------------------------------
Newsgroups: comp.graphics,news.answers
From: azhao@cs.arizona.edu (Qiang Alex Zhao)
Newsgroups: comp.graphics
Subject: Q: parallel graphics algorithms
Keywords: parallel graphics algorithms
Date: 28 Aug 92 19:04:32 GMT


Sorry if this is a repost (I'm not sure).

Could anybody point to me where I can find some graphics algorithms
that can be easily parallellized, or a bibliography on parallel
graphics algorithms? Thanks a lot.

--
= Qiang Alex Zhao		   Computer Science Department
  azhao@cs.arizona.edu             University of Arizona
  (602) 621-1815                   Tucson, AZ 85721
From: ct@epcc.ed.ac.uk (C Thornborrow)
Newsgroups: comp.graphics
Subject: ray-object-intersect
Keywords: ray tracing, objects, bounding box
Date: 1 Sep 92 11:13:50 GMT
Organization: Edinburgh Parallel Computing Centre

With the many public domain ray-tracers available I wondered if anyone had put
together a set of :
1) ray_object intersection tests
2) Corresponding object_normal tests
3) Corresponding object_boundingbox creation routines
2) corresponding bounding box tests

The PD ray-tracers use different object and vector types and I wondered if anyone
had gathered these into a standard format ?

Chris.
(partial attempts interest me).
Newsgroups: comp.graphics
From: berling@infko.uni-koblenz.de
Subject: Infos on CAD systems
Keywords: variational geometry
Organization: University of Koblenz, Germany
Date: Thu, 27 Aug 1992 13:23:11 GMT

I would like to get some informations about the
following CAD Systems (commercial/academic):

PTC
Cognition
ICAD
Wisdom
ICOMMEX
Analytix

I don't know whether these are all names of systems
or perhaps names of vendors. I am especially interested 
in their capabilities concerning variational geometry or
parametric design. Any pointers to information sources
or hints on papers are wellcome!

Thank you!

+----------------------------+-----------------------------------------+
|                            |                                         |
|  Roland Berling            |  Tel.:   +49 261 9119 436               |
|  Universit"at Koblenz      |  Fax.:   +49 261 9119 499               |
|  Institut f"ur Informatik  |  e-mail: berling@infko.uni-koblenz.de   |
|  Rheinau 3-4               |                                         |
|  D-5400 Koblenz            |                                         |
|  Germany                   |                                         |
|                            |                                         |
+----------------------------+-----------------------------------------+


Newsgroups: comp.graphics
From: linas@austin.ibm.com (Linas Vepstas)
Newsgroups: comp.graphics
Subject: Re: 3d rotation about an arbitrary axis: how?
Date: 3 Sep 92 22:48:41 GMT
Reply-To: linas@boardhead.austin.ibm.com
Organization: IBM Graphics Systems
Originator: linas@boardhead.austin.ibm.com


In article <1992Aug31.174635.14572@cs.UAlberta.CA>, leung@cs.UAlberta.CA (Jian-Dong Liang) writes:
> >I vaguely remember some kind of matrix formula for which the familiar x-,
> >y-, and z-rotation matrices were but special cases.  Does such a 
> >formula exist?  Something about "Euler angles"...
>
> A rotation of magnitude theta around an arbitrary axis (x, y, z)
> corresponds to a unit quaternion q=(q0, q1, q2, q3), where
> 

A very similar formula can be dervied from the homomorphism of SU(2)
(the Special (determinant=1) Unitary Group of 2x2 matrices) onto O(3)
(the group of orthogonal (i.e. rotation) 3x3 matrices).  My favorite rep
for the su(2) algebra uses the pauli matrices -- si*si == sj*sj == 
sk*sk == 1, much nicer than the quaternions, where you have that ugly
thing i*i == j*j == k*k == -1. Minus one ??? ehhhugh! 

Anyway, if you have access to an IBM RS/6000 with AIX 3.2 or higher,
you can find source code for "rot_about_axis" in /usr/lpp/GL/examples.
--- Linas
linas@innerdoor.austin.ibm.com
-- 

                                        Linas Vepstas

^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^
From: e91sg@efd.lth.se (Stefan Gimeson)
Subject: GIFEdit (WANTED!!)
Organization: Lund Institute of Technology, Sweden
Date: Fri, 4 Sep 1992 18:21:05 GMT

I'm looking for a program that makes it possible to edit, redraw, &
change .gif-piccys. I already have xv, but i want something more 
advanced (like DeluxePaint 4 on the Amiga, wishful thinking......)
Is there a program like this out there, and if so, where can I get
hold of it ???

/Stefan
===============================================================================
Stefan Gimeson                (e91sg@efd.lth.se)                              *
Tunavagen 39 B660                                                             *
S-223 63 Lund         *       (Boing,Boom,Tsack!)     (Words like violece)    *
                    U*MEN     (                 )     (breaks the silence)    *
Sweden                *        (  -KRAFTWERK-  )       (                )     *
Phone (0)46-141386   * *        (             )         (     -D.M-    )      *
=================================(           )===========(            )========
Disclaimer - These opiini^H^H damn! ^H^H ^Q ^[ .... :w  :q  :wq  :wq! ^d  X ^?*
exit X Q  ^C ^? :quitbye  CtrlAltDel   ~~q  :~q  logout  save/quit :!QUIT     *
^[zz ^[ZZZZZZ ^H  man vi ^@  ^L  ^[c  ^# ^E ^X ^I ^T ? help  helpquit ^D  ^d  *
man help ^C ^c help exit ?Quit ?q CtrlShftDel "Hey, what does this button d..."
                                                                              *
===============================================================================

Newsgroups: comp.graphics,comp.sources.wanted
From: nirad@newdelphi.ceu.uq.oz.au (Nirad Sharma)
Subject: 3d function plotting program
Organization: Continuing Education Unit, The University of Queensland
Date: Thu, 3 Sep 1992 15:41:42 GMT

Is there a FAQ list for this group ?  Does anyone have a program like
gnuplot that can plot 3d functions ?  I'd like to include the output in
latex (.pic or .eps is fine) and have the output look fairly pretty.


Nirad
--
Nirad Sharma  (nirad@ceu.uq.oz.au)			Phone : (+61 7) 365 7575
Continuing Education Unit				Fax :	(+61 7) 365 7099
The University of Queensland.  QLD  4072.  AUSTRALIA
Newsgroups: comp.graphics
From: mlelstv@specklec.mpifr-bonn.mpg.de (Michael van Elst)
Subject: Re: color map. search
Organization: Max-Planck-Institut f"ur Radioastronomie
Date: Thu, 3 Sep 1992 09:18:37 GMT

In <34826@cbmvax.commodore.com> chrisg@cbmvax.commodore.com (Chris Green) writes:
>    What I do is create a (for instance) 4096 entry table, each entry of
>which contains a list of colors, indexed by the upper 4 bits of RGB, and an
>error value. Since I am going to be using the table for each pixel, I can
>afford a bit of setup time.

Nice example. When I needed this solution I used a brute force method.
Most pictures have only some ten thousand different colors (but some
hundred thousand pixels). A simple 80000-entry hashing table made
repeated determination of the 'best' color much faster. In fact, the
overhead of Ghostscript (I wrote a driver for a fixed palette display)
was now much higher than the color search.

Regards,
-- 
Michael van Elst
UUCP:     universe!local-cluster!milky-way!sol!earth!uunet!unido!mpirbn!p554mve
Internet: p554mve@mpirbn.mpifr-bonn.mpg.de
                                "A potential Snark may lurk in every tree."