HDTenEightyP/NetNews huggingface dataset:
From: boshoff@sunvax.sun.ac.za (Hendrik Boshoff)
Newsgroups: sci.fractals
Subject: new book: Fractal Image Compression
Date: 7 Jan 93 17:14:23 GMT
Distribution: inet
Organization: University of Stellenbosch

I am crossposting this from comp.theory.dynamical-sys.
Sorry if it has already appeared in sci.fractals, but
I didn't see it, and I know of many people eagerly
awaiting this book.

In article <9301061849.AA05997@nettlerash.berkeley.edu>, 
hurd@MATH.GATECH.EDU (Lyman Hurd) writes:

> I am pleased to announce the arrival of the book:
> 
> Fractal Image Compression
> by Michael Barnsley and Lyman Hurd.
> 
> hardbound 244 pages, 16 color plates
> 
> 
> A sequel to Fractals Everywhere, Fractal Image Compression describes the
> mathematics underlying the Fractal Transform an image compression method
> discovered by Michael Barnsley and developed at Iterated Systems.  Topics
> include:
> 
>   * Iterated Function Systems
> 
>   * Local IFS and the Black and White Fractal Transform
> 
>   * The Grayscale Fractal Transform
> 
>   * Information Theory
> 
>   * Huffman codes
> 
>   * Arithmetic Codes
> 
>   * JPEG Image Compression
> 
> Example programs in C are interspersed throughout the text.
> 
> Copies can be ordered directly from the publisher by the  following
> methods:
> 
> 1) Email: send a message to kpeters@math.harvard.edu with name address and
> a Mastercard or Visa card number WITH EXPIRATION DATE.
> 
> 2) Mail: Check or money order or the above credit card information to:
> 
> AK Peters, Ltd.
> 289 Linden St.
> Wellesley, MA 02181
> 
> 3) Phone (credit card orders) (617) 235-2210 (voice) (617) 235-2404 (fax)
> 
> The book is $49.95 including shipping.  Residents of Massachusetts please
> add 5% sales tax.
From: fargher@unixg.ubc.ca (Robert Fargher)
Newsgroups: sci.fractals
Subject: Re: fractal videos
Date: 8 Jan 93 21:44:31 GMT
Organization: The University of British Columbia
NNTP-Posting-Host: unixg.ubc.ca


>Call Media Magic, 415-662-2426, and get them to send their catalog -
>they have dozens, nay, hundreds of videos and other stuff on fractals.
>Good stuff, too.

>...or try their 800 order-only number - 800-882-8284.

  I saw the above message and called them.  Got a recorded message saying
that they are on vacation and to call back January 11.  I left a message
(I think it was an answering machine :-) with my address asking for a
catalogue.

  Aside from Compu$serve, is there a FTP site for MAP and PAR files for
Fractint?
-- 
Robert Fargher  fargher@unixg.ubc.ca |  The number of things that I know
Dept. of Physiology, UBC             |  absolutely nothing about is increasing
Vancouver, BC, Canada, V6T 1Z3       |  at an alarming rate!
From: denham@hmsp04.wg3.waii.com (Scott Denham X7117)
Newsgroups: sci.fractals
Subject: Re: Fractal sound?
Date: 4 Jan 93 16:12:09 GMT
Organization: Western Geo. - Div of Western Atlas Intn'l Inc., Houston, TX

In article <93002.002334U41602@uicvm.uic.edu> U41602@uicvm.uic.edu (Rich Chong) writes:
>I heard that there is a fractal tone that sounds like a tone of
>a forever increasing pitch, but in reality doesn't.
>Is there a name to this?

I believe it's known as Shepherd's tone.
From: bert.tyler@satalink.com (Bert Tyler)
Newsgroups: sci.fractals
Subject: Re: Fractint 17.2: Intere
Date: 4 Jan 93 09:36:00 GMT
Reply-To: bert.tyler@satalink.com (Bert Tyler)
Organization: Datamax/Satalink Connection * Ivyland, PA (215) 443-9434

PH>Ah!!! THIS was the problem.  The NAME has been changed (to protect the
PH>innocent?).  That was probably done a while back, too, I bet.

PH>What *IS* the official name of the program?

The closest thing we have to an "official" naming convention is
FRAINT.EXE and FRASRC.EXE - the names under which new versions of
Fractint are uploaded (as self-extracting archive files) to their
home base on the GRAPHDEV forum on Compuserve.

Compuserve's software limits filenames to a 6.3 convention, and
they frown on version numbers in filenames (so do I, really - it's
*much* easier to be able to say "the latest version can always be
found in file...").  Fractint's core development work is done via
Compuserve, and the above naming convention has been around for
a *long* time there - and works very well.

Unfortunately, as Fractint moves outward from there, it runs into all
kinds of forced naming changes, none of which us Fractint folks have
any control over (and in fact, we're not usually the folks who end up
uploading it, at least not on the BBS networks).

Some sites forbid the self-extracting archive format, so folks have
to extract and then reZIP (or reARC, or reZOO, or...) the files.
Other sites (including my favorite local BBS) forbid the uploading
of files with names that already exist, so folks *have* to add
something unique like a version number.  When we upload a new
'nn.0' release, the latter is pretty easily handled within DOS limits
using the convention FRAINTnn.ZIP - but then that convention gets
blown away when we upload the almost inevitable 'nn.1' bug-fix.
I suppose a Unix-based FTP site could abandon the 8.3 MS-DOS 
restriction, but I can understand the desire to store an MS-DOS
program using a name that is at least recognizable by MS-DOS.

(At any rate, the short answer is that the closest thing we have
to an official name is FRAINT.EXE/FRASRC.EXE.)

                   Bert Tyler   (bert.tyler@satalink.com)
---
 . DeLuxe./386 1.25 #343sa . Did you expect mere proof to sway my opinion?
                      
Newsgroups: sci.fractals
From: mjuric@aisun2.ai.uga.edu (Mark Juric [MSAI])
Subject: Fractal flora question 
Organization: AI Programs, University of Georgia, Athens
Date: Mon, 4 Jan 1993 22:11:18 GMT

Does anyone know where I might find an equation for creating a fractal that
resembles a pine tree, or branch and needles of a pine tree?  Other than the
famous "fern" fractal, are there any available equations for simulating plant
growth?  And where would I look?

Thanks.


===============================================================================
@  Mark Juric 		                     A.I. Department                  @
@  mjuric@ai.uga.edu                       University of Georgia              @
@                                          Athens, Georgia 30605              @
@                                                                             @
@	"It slipped my mind that I could use my brain"                        @
@                                                                             @
From: Mahmut.Kursun@bbs.gold.sub.org (Mahmut Kursun)
Newsgroups: sci.fractals
Subject: Re: Fractint 17.2: Intere
Date: 8 Jan 93 19:35:27 GMT
Reply-To: Mahmut.Kursun@bbs.gold.sub.org (Mahmut Kursun)
Organization: Unix Mailbox Baldham
X-Posting-Software: UniBoard 1.10b S/N 165921

Hello,

is your Book Imagelab already out? If not, could you tell me 
approxcimate date? How many pages are there for POV in this book?

bye
From: prissi@marie.physik.tu-berlin.de (Markus Pristovsek)
Newsgroups: sci.fractals
Subject: Re: Lyapunov Fractals: Need Interesting GIF's, Parameters, Etc.
Date: 7 Jan 1993 10:40:44 GMT
Organization: ZRZ/TU-Berlin
NNTP-Posting-Host: marie.physik.tu-berlin.de

Hello,

>process and get GIF's and/or parameter files for some of the more interesting

in Computer in Physics in september/october 1990 (I think) there was an 
article on Lyapunov maps. It contains many pictures with their parameters.

Here an distortion was added, which produces very nice effects.

Ciao, Markus
Newsgroups: sci.fractals,alt.binaries.pictures.fractals
From: scott@hpqtdpa2.sqf.hp.com (Scott Ferguson)
Subject: Re: Lyapunov Fractals:  Looking For GIF/JPG Files - And a Question
Date: Mon, 11 Jan 1993 09:06:58 GMT
Organization: HP,Queensferry Telecoms Division, Scotland
X-Newsreader: TIN [version 1.1.4 PL7]
Followup-To: sci.fractals,alt.binaries.pictures.fractals

Jon Noring (noring@netcom.com) wrote:
: 
: And now for a question.  I run, as you gather, Fractint 17.2, and I'd
: like to know how the lyapunov images vary as one goes to higher number
: of iterations (the default is 150 but can go as high as 32000+).  I'd

On a purely empirical basis I've found that apart from the zoom depth
the number of iterations required to produce a converged result will increase 
the longer the forcing sequence is

eg "aaaaaabbbbbb" will take a lot longer at any given depth than  "ab"

If you use too low a number the resulting picture looks as if the paint has
been smudged, adjacent pixels may not have converged to the "correct" value.

Once I've done a draft picture I usually turn up the iterations to a million
and leave it running until the next day. ( I'm not using fractint )


                                      Scott
Newsgroups: sci.fractals
From: lmitchel@nyx.cs.du.edu (lloyd mitchell)
Subject: Re: fractal photos
Organization: University of Denver, Dept. of Math & Comp. Sci.
Date: Tue, 12 Jan 93 04:00:39 GMT

In article <93007.215927LMACC@CUNYVM.BITNET> Len Alshan <LMACC@CUNYVM.BITNET> writes:
>Would appreciate any information regarding photographing fractal images.
>Am working on a PS/2 Model 80 with 8514A video and have good photo
>equipment. Not interested in professional grade photos or slides.  This is
>purely a for fun project.

I use a Nikon FM 35mm SLR with a 28-70 zoom lens, set on macro.  For film, I
use Kodak Gold 100, since it is readily available, fairly inexpensive, has
good color, and is easily printed.  Exposure times should be farily long to
reduce the effect of screen refresh, but many films are not rated for more
than 0.1 seconds of exposure.  I guess at longer exposures, the color
balances get out of whack.  Anyway, Gold is rated up to 10 seconds of exposure,
which is good enough for me.  My camera's meter seems to work well enough for
me; I usually shoot around 1/2 second and f/8, adjusting each for each shot.

I've found that it is very helpful to find a sympathetic one-hour photo
operator in your area.  Most I've encountered are sick to death of out-of-
focus snapshotss and really appreciate something different (like fractals).
If you find a processer you can work with, then help them help you.  The 
first exposure on every one of my rolls is a color standard.  I use blocks
of red, green, blue, cyan, magenta, yellow, white, and black.  I have the
processer set the balance for this first picture and leave it that way
for the whole roll.  Otherwise, you let the person printing decide what color
your images should be.  You may find that how a picture looks has as much
to do with how it is printed as with how it was shot.  Herein lies an
advantage to shooting slide film.

Hope this is useful,
Kerry Mitchell
mitchell@acodv1.larc.nasa.gov
Newsgroups: sci.fractals
From: tdexte16@ursa.calvin.edu (Terrence Dexter)
Subject: Image storing and fractals
Organization: Calvin College
Date: Fri, 8 Jan 1993 18:55:40 GMT


		  A friend told me about a research project that had resulted in
the ability to survey an image in several layers of depth using fractals.
I think the image in question was an iguana or some sort of creature
of the sort and the image could be "blown up" (so to speak) on any 
area.  The image was stored by using fractals.
		  My question is:  Does anyone know more information about this,
especially who did it and where?  A reference would be greatly appreciated
too.
		  Thanks.

--
|  - Terry Dexter, Calvin College  ||G|     I teleported home one night
|  -  tdexte16@ursa.calvin.edu     ||E|     With Ron and Sid and Meg
+----------------------------------+|B|     Ron stole Meggie's heart away
 Quote from Douglas Adams (RATEOTU)  -      And I got Sidney's leg.
Newsgroups: sci.fractals
From: noring@netcom.com (Jon Noring)
Subject: Lyapunov Fractals:  Need Interesting GIF's, Parameters, Etc.
Organization: Netcom Online Communications Services (408-241-9760 login: guest)
Date: Thu, 7 Jan 1993 00:16:31 GMT

Hello,

I would like to generate Lyapunov fractals on my PC using Fractint 17.2.
However, because they take so long to calculate, I'd like to "shorten" the
process and get GIF's and/or parameter files for some of the more interesting
Lyapunov's.  Please send me what you have (or point me to anonymous ftp sites
carrying that information.)

Thanks.

Jon


-- 

Charter Member of the INFJ Club.

Now, if you're just dying to know what INFJ stands for, be brave, e-mail me,
and I'll send you some information.  It WILL be worth the inquiry, I think.

=============================================================================
| Jon Noring          | noring@netcom.com        | I VOTED FOR PEROT IN '92 |
| JKN International   | IP    : 192.100.81.100   | Support UNITED WE STAND! |
| 1312 Carlton Place  | Phone : (510) 294-8153   | "The dogs bark, but the  |
| Livermore, CA 94550 | V-Mail: (510) 417-4101   |  caravan moves on."      |
=============================================================================
Who are you?  Read alt.psychology.personality!  That's where the action is.
Newsgroups: sci.fractals
From: ctdonath@mothra.syr.EDU (Carl T. Donath)
Subject: Re: Fractal landscapes for MS-DOS?
In-reply-to: taudas@ais.org's message of Sat, 9 Jan 1993 05:57:57 GMT
Organization: Syracuse University
	<taudas.726559077@ais.org>
Date: Mon, 11 Jan 93 11:17:34 EST

In article <taudas.726559077@ais.org> taudas@ais.org (Tony Audas) writes:

   ...
   by virtual reality labs.  i believe currently limited to 640x480.
   it reads DEM (digital elevation model).  they also sell Mars Explorer
   the whole planet (on cdrom) that one can explore.

Is there an Earth version on CD-ROM? Mars would be interesting, but a little
hard to visit.
--
    ___________________________________________
 __/ ctdonath@rodan.acs.syr.edu  Carl T Donath \____
/ The government is not your mother. Do it yourself. \
Newsgroups: sci.fractals
From: taudas@ais.org (Tony Audas)
Subject: Re: Fractal landscapes for MS-DOS?
Organization: UMCC
Date: Sat, 9 Jan 1993 05:57:57 GMT

yes, the commercial program is 'VistaPro', about US$100 i think.
by virtual reality labs.  i believe currently limited to 640x480.
it reads DEM (digital elevation model).  they also sell Mars Explorer
the whole planet (on cdrom) that one can explore.
it is possible to use fractint and pov-ray (or other raytracer) to create
high-res fractal landscapes
Newsgroups: sci.fractals
From: dcasadon@magnus.acs.ohio-state.edu (Donald J Casadonte)
Subject: Re: Fractal sound?
Organization: The Ohio State University
Date: Thu, 7 Jan 1993 19:12:40 GMT

     There was a paper given at the November Acoustical Society Meeting in the 
special session entitled "Chaos and Music" in which the author generated scales
which on the printed page looked like one scale, but sounded, when played, like
another scale (so-called "fractal" scales can do this).  For more information 
on this and the Shepard's tone, see the November abstract issue of the Journal 
of the Acoustical Society of America for more details, and authors to contact.
     Donald Casadonte
Newsgroups: sci.fractals,alt.binaries.pictures.fractals
From: noring@netcom.com (Jon Noring)
Subject: Lyapunov Fractals:  Looking For GIF/JPG Files - And a Question
Organization: Netcom Online Communications Services (408-241-9760 login: guest)
Date: Sun, 10 Jan 1993 21:00:51 GMT

Hello,

I'm reposting this request one more time since my last post yielded very
little help.

I am looking for images (GIF/JPG) of lyapunov fractals.  I know of site
nz20.rz.uni-karlsruhe.de (129.13.96.2), but for some reason it won't
acknowledge my ftp attempts.  Are there any other sites containing 
lyapunov images?  (I'd prefer those generated by Fractint 17.2, but for
now I'll look at anything).

And now for a question.  I run, as you gather, Fractint 17.2, and I'd
like to know how the lyapunov images vary as one goes to higher number
of iterations (the default is 150 but can go as high as 32000+).  I'd
rather get a quick answer to this rather than do a comparison because
these things take so dingedly long to compute.  And, of course, I'd like
this question answered as a function of the exponent.

Thanks for you help.

Jon

-- 

Charter Member of the INFJ Club.

Now, if you're just dying to know what INFJ stands for, be brave, e-mail me,
and I'll send you some information.  It WILL be worth the inquiry, I think.

=============================================================================
| Jon Noring          | noring@netcom.com        | I VOTED FOR PEROT IN '92 |
| JKN International   | IP    : 192.100.81.100   | Support UNITED WE STAND! |
| 1312 Carlton Place  | Phone : (510) 294-8153   | "The dogs bark, but the  |
| Livermore, CA 94550 | V-Mail: (510) 417-4101   |  caravan moves on."      |
=============================================================================
Who are you?  Read alt.psychology.personality!  That's where the action is.
From: paul.burnett@pcs.sj.ca.us (Paul Burnett) 
Newsgroups: sci.fractals
Subject: fractal videos
Date: 8 Jan 93 08:32:00 GMT
Distribution: world
Organization: PCS-BBS - San Jose, CA - 408-270-4085
Reply-To: paul.burnett@pcs.sj.ca.us (Paul Burnett) 

TO: dfuquay@CS.ColoState.EDU

DF>A friend of mine is looking for a good video about fractals.

Call Media Magic, 415-662-2426, and get them to send their catalog -
they have dozens, nay, hundreds of videos and other stuff on fractals.
Good stuff, too.

...or try their 800 order-only number - 800-882-8284.

---
 . QMPro 1.0 41-8688 . ...from San Jose, CA
                                                                                                                                                            
Newsgroups: sci.fractals
From: an1060@anon.penet.fi
Subject: FRACTAL Book for sale...
Organization: Anonymous contact service
X-Anonymously-To: sci.fractals
Date: Tue, 12 Jan 1993 20:29:33 GMT

X-Anon-To: sci.fractals



Hello,

I have the following book I wish to sell:

FRACTALS, by Jens Feder, hardcover, 1988.

"Coherent and clearly written...an excellent starting point for
 students of fractals."
                            -- American Scientist

"This lovely little book will take off and fly on its own power...
 To write such a book is no easy task, but Jens Feder meets the
 challenge head on."
                            -- from the forward by
                               Benoit B. Mandelbrot


The book is like new (hardly ever opened)...

Publishers price:  $49.50 --  I ask:  $30 + shipping costs

Please respond to:  mantell@ams.sunysb.edu

Thanks

Abe


-------------------------------------------------------------------------
To find out more about the anon service, send mail to help@anon.penet.fi.
Due to the double-blind system, any replies to this message will be anonymized,
and an anonymous id will be allocated automatically. You have been warned.
From: shirriff@sprite.berkeley.edu (Ken Shirriff)
Newsgroups: sci.fractals
Subject: Re: Image storing and fractals
Date: 11 Jan 1993 20:04:58 GMT
Organization: University of California, Berkeley
NNTP-Posting-Host: hijack.berkeley.edu

In article <1993Jan11.170543.5678@sunvax.sun.ac.za> boshoff@sunvax.sun.ac.za (Hendrik Boshoff) writes:
>The additional data is manufactured through interpolation --- fractal
>interpolation in this case. [...] Definitely better on the eye than growing
>square pixels

It should be pointed out that a normal non-fractal zoom will not generate
blocky, square pixels if it is done properly.  With antialiasing, the zoomed
image will remain smooth.  (There will, of course, be no detail in the zoomed
areas.)  Thus, it is a misleading comparison to say that fractal zooming is
better because you don't get big blocky pixels.

Ken Shirriff				shirriff@sprite.Berkeley.EDU
Newsgroups: sci.fractals,comp.sys.mac.programmer
From: stgprao@st.unocal.COM (Richard Ottolini)
Subject: Re: Fractal flora question 
Organization: Unocal Corporation
Date: Tue, 5 Jan 1993 00:33:25 GMT

In article <C0CoAv.7F3@athena.cs.uga.edu> mjuric@aisun2.ai.uga.edu (Mark Juric [MSAI]) writes:
>Does anyone know where I might find an equation for creating a fractal that
>resembles a pine tree, or branch and needles of a pine tree?  Other than the
>famous "fern" fractal, are there any available equations for simulating plant
>growth?  And where would I look?
>
>Thanks.
>
>
>===============================================================================
>@  Mark Juric 		                     A.I. Department                  @
>@  mjuric@ai.uga.edu                       University of Georgia              @
>@                                          Athens, Georgia 30605              @
>@                                                                             @
>@	"It slipped my mind that I could use my brain"                        @
>@                                                                             @


"The Algorithmic Beauty of Plants" by Prusinkiewicz and Lindenmayer.
Mr. P. had a couple of papers in the 1992 SIGGRAPH Proceedings on the topic.
From: scott@hpqtdpa2.sqf.hp.com (Scott Ferguson)
Newsgroups: sci.fractals
Subject: spider - on HP700's?
Date: 6 Jan 93 16:13:48 GMT
Organization: HP,Queensferry Telecoms Division, Scotland
X-Newsreader: TIN [version 1.1.4 PL7]

Has anyone got a version of spider which runs on HP700's? I'd like to see
what it does and I've got it to compile but I think I may have the wrong 
version of the xview widgets as it bombs when I run it with 

/lib/dld.sl: Unresolved symbol: sigvec (code)  from libxview.sl

From the sci.fractals FAQ 

'spider: Uses Thurston's algorithm for computing postcritically finite po-
        lynomials, draws Mandelbrot and Julia sets using the Koebe algorithm,
        and draws Julia set external angles.  Ftp from: lyapunov.ucsd.edu in
        pub/inls-ucsd/spider.'


                                         Scott  Ferguson
From: thornton@carson.u.washington.edu (Kenneth Thornton)
Newsgroups: sci.fractals
Subject: Re: Image storing and fractals
Date: 12 Jan 93 03:49:06 GMT
Article-I.D.: shelley.1itf3iINNs3e
Organization: University of Washington, Seattle
NNTP-Posting-Host: carson.u.washington.edu

>The people doing the work are headed by Michael Barnsley,
>previously of Georgia Tech. They patented their algorithm,
>but a book on the techniques has just appeared (see the post
>on the new fractal image compression book).

I didn't think algorithms could be patented. 

I would like to order the patent if someone can post
the relevant info (patent #, etc..)
Newsgroups: sci.fractals
From: indole@mace.cc.purdue.edu (Matthew Parker)
Subject: Re: Fractal flora question 
Organization: Purdue University
Date: Wed, 6 Jan 1993 02:53:30 GMT

In article <C0CoAv.7F3@athena.cs.uga.edu> mjuric@aisun2.ai.uga.edu (Mark Juric [MSAI]) writes:
>Does anyone know where I might find an equation for creating a fractal that
>resembles a pine tree, or branch and needles of a pine tree?


There is a book called FractalVision, by Dick Oliver, available at
Waldenbooks and probably other places.  It includes a disk with software
for generating images based on fractal templates.  Many different templates
are discussed which generate pine trees, oaks, maples, flowers, etc.

--Matt
Organization: University of Illinois at Chicago
Date: Tuesday, 5 Jan 1993 18:10:42 CST
From: Rich Chong <U41602@uicvm.uic.edu>
Newsgroups: sci.fractals
Subject: Re: Fractal sound?
 <29895@castle.ed.ac.uk>

>>I believe it's known as Shepherd's tone.
>
>I wouldn't have thought this qualified as a fractal --- more a
>psychological effect.  There was a very interesting article on this in

Thanks, I don't know if it qualifies as a genuine fractal either. I heard
it during a general session at an IBM mainframe conference (SHARE) this
past august in Atlanta, by the keynote speaker, IBM's Richard Voss (from
Thomas J. Watson Research) on "Fractals, Chaos, and Computers: A new
world view". I think he was giving an analogy of zooming in on a certain
class of fractals to get more detail, only to find that the smaller *bits*
resemble the the original, ad infinitum. Ya look like you're getting
closer, but not really. The Shepherd's tone is a similar concept he gave.

Does anyone have a sample, or a PC-DOS program that produces this tone?
Thanks a lot!   rich chong