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Newsgroups: alt.graphics.pixutils,alt.answers
Path: bloom-beacon.mit.edu!news.kei.com!news.oc.com!news.unt.edu!cs.utexas.edu!howland.reston.ans.net!agate!library.ucla.edu!csulb.edu!csus.edu!netcom.com!jef
From: jef@netcom.com (Jef Poskanzer)
Subject: (28feb93) Welcome to alt.graphics.pixutils - automated posting.
Message-ID: <jefCLztz6.J7L@netcom.com>
Followup-To: poster
Reply-To: Jef Poskanzer <jef@netcom.com>
Organization: Paratheo-Anametamystikhood of Eris Esoteric
Date: Tue, 1 Mar 1994 16:04:17 GMT
Approved: jef@netcom.com
Expires: Tue, 5 Apr 1994 16:04:17 GMT
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Xref: bloom-beacon.mit.edu alt.graphics.pixutils:3077 alt.answers:1987
Archive-name: pixutils-faq
This message is automatically posted once a month to inform new readers
and remind old readers of what alt.graphics.pixutils is about. It was
last changed on 28feb93. If you don't want to see this posting every
month, please add the subject line to your kill file. Thank you.
---
Jef
Jef Poskanzer jef@netcom.com jef@well.sf.ca.us
"...Is this a trick question?"
- - - - - - - - - -
This newsgroup is for discussion of pixmap utilities. A pixmap is
any image composed of pixels, whether it's a one-bit-deep bitmap, a
grayscale image, colormapped, or full color. There are dozens of
different file formats for storing pixmaps, and there are a number of
software packages for converting between formats and displaying
formats. Some of these packages are listed in the Frequently Asked
Questions posting in comp.graphics - the relevant excerpts are appended
below.
Discussion of these packages and other similar ones will probably be
the main topic here. Posting uuencoded sample pixmaps for some weird
format you're trying to decipher is fine, especially if they are small,
but mass posting of pixmaps is not welcome.
- - - - - - - - - -
[from the comp.graphics weekly posting]
7) Free image manipulation software. There are a number of toolkits
for converting from one image format to another, doing simple image
manipulations such as size scaling, plus the above-mentioned 24 -> 8,
color -> gray, gray -> b&w conversions. Here are pointers to some of
them:
PBMPLUS, by Jef Poskanzer. Comprehensive format conversion and image
manipulation package. The latest version is always available via
anonymous FTP as ftp.ee.lbl.gov:pbmplus*.tar.Z,
wuarchive.wustl.edu:graphics/graphics/packages/pbmplus/pbmplus*.tar.Z,
and export.lcs.mit.edu:contrib/pbmplus*.tar.Z.
IM Raster Toolkit, by Alan Paeth (awpaeth@watcgl.uwaterloo.ca).
Provides a portable and efficient format and related toolkit. The
format is versatile in supporting pixels of arbitrary channels,
components, and bit precisions while allowing compression and machine
byte-order independence. The kit contains more than 50 tools with
extensive support of image manipulation, digital halftoning and format
conversion. Previously distributed on tape c/o the University of
Waterloo, an FTP version will appear someday.
Utah RLE Toolkit. Conversion and manipulation package, similar to
PBMPLUS. Available via FTP as cs.utah.edu:pub/urt-*,
weedeater.math.yale.edu:pub/urt-*, and freebie.engin.umich.edu:pub/urt-*.
Fuzzy Pixmap Manipulation, by Michael Mauldin <mlm@nl.cs.cmu.edu>.
Conversion and manipulation package, similar to PBMPLUS. Version 1.0
available via FTP as nl.cs.cmu.edu:/usr/mlm/ftp/fbm.tar.Z,
ftp.uu.net:pub/fbm.tar.Z, and ucsd.edu:graphics/fbm.tar.Z.
Img Software Set, by Paul Raveling <raveling@venera.isi.edu>. Reads and
writes its own image format, displays on an X11 screen, and does some
image manipulations. Version 1.3 is available via FTP as
export.lcs.mit.edu:contrib/img_1.3.tar.Z, and
venera.isi.edu:pub/img_1.3.tar.Z along with a large collection of color
images.
Xim, The X Image Manipulator, by Philip Thompson, does essential
interactive displaying, editing, filtering, converting images.
Available in the X11R4 source tree. A more recent version is available
via ftp from gis.mit.edu. Requires X11R4 and the OSF/Motif1.1 toolkit
for the interface. This is not a paint package. Xim reads/writes gif,
xwd, xbm, tiff, rle, xim, (writes level 2 eps) and other formats. Also
has a library and command line utilities for building your owm
applications.
xloadimage, by Jim Frost <madd@std.com>. Reads in images in various
formats and displays them on an X11 screen. Available via FTP as
export.lcs.mit.edu:contrib/xloadimage*, and in your nearest comp.sources.x
archive.
TIFF Software, by Sam Leffler <sam@okeeffe.berkeley.edu>. Nice
portable library for reading and writing TIFF files, plus a few tools
for manipulating them and reading other formats. Available via FTP as
ucbvax.berkeley.edu:pub/tiff/*.tar.Z or ftp.uu.net:graphics/tiff.tar.Z
xtiff, an X11 tool for viewing a TIFF file. It was written to handle
as many different kinds of TIFF files as possible while remaining
simple, portable and efficient. xtiff illustrates some common problems
with building pixmaps and using different visual classes. It is
distributed as part of Sam Leffler's libtiff package and it is also
available on export.lcs.mit.edu, ftp.uu.net and comp.sources.x.
xtiff 2.0 was announced in 4/91; it includes Xlib and Xt versions.
ALV, a Sun-specific image toolkit. Version 2.0.6 posted to
comp.sources.sun on 11dec89. Also available via email to
alv-users-request@cs.bris.ac.uk.
popi, an image manipulation language. Version 2.1 posted to
comp.sources.misc on 12dec89.
ImageMagick, an X11 package for display and interactive manipulation
of images. Includes tools for image conversion, annotation, compositing,
animation, and creating montages. ImageMagick can read and write many of
the more popular image formats. Available via FTP as
export.lcs.mit.edu:contrib/ImageMagick.tar.Z.
Khoros, a huge (~100 meg) graphical development environment based on
X11R4. Khoros components include a visual programming language, code
generators for extending the visual language and adding new application
packages to the system, an interactive user interface editor, an
interactive image display package, an extensive library of image and
signal processing routines, and 2D/3D plotting packages. Available via
FTP as ftp.eece.unm.edu:pub/khoros/*.
LaboImage, a SunView-based image processing and analysis package. It
includes more than 200 image manipulation, processing and measurement
routines, on-line help, plus tools such as an image editor, a color
table editor and several biomedical utilities. Available via anonymous
FTP as ftp.ads.com:pub/VISION-LIST-ARCHIVE/SHAREWARE/LaboImage_4.0.tar.Z
The San Diego Supercomputer Center Image Tools, software tools for
reading, writing, and manipulating raster images. Binaries for some
machines available via anonymous FTP in sdsc.edu:sdscpub.
The Independent JPEG Group has written a package for reading and
writing JPEG files. FTP to ftp.uu.net:graphics/jpeg/jpegsrc.v?.tar.Z
Don't forget to set binary mode when you FTP tar files. For you MILNET
folks who still don't have name servers, the IP addresses are:
ftp.ads.com 128.229.36.25
cs.utah.edu 128.110.4.21
export.lcs.mit.edu 18.24.0.12
freebie.engin.umich.edu 141.212.68.23
ftp.ee.lbl.gov 128.3.112.20
ftp.uu.net 192.48.96.9
gis.mit.edu 18.80.1.118
nl.cs.cmu.edu 128.2.222.56
ftp.eece.unm.edu 129.24.24.119
sdsc.edu 132.249.20.22
ucbvax.berkeley.edu 128.32.133.1
venera.isi.edu 128.9.0.32
weedeater.math.yale.edu 130.132.23.17
wuarchive.wustl.edu 128.252.135.4
Please do *not* post or mail messages saying "I can't FTP, could
someone mail this to me?" There are a number of automated mail servers
that will send you things like this in response to a message. See
item 13 below for details on some.
8) Format documents for GIF, TIFF, IFF, BIFF, WHIFF, etc.
You almost certainly don't need these. Read the above item 7 on free
image manipulation software. Get one or more of these packages and
look through them. Chances are excellent that the image converter you
were going to write is already there. But if you still want one of the
format documents, many such files are available by anonymous ftp from
zamenhof.cs.rice.edu (128.42.1.75) in directory pub/graphics.formats.
These files were collected off the net and are believed to be correct.
This archive includes pixel formats, and two- and three-dimensional
object formats. Other file format descriptions are welcome, send to
Mark Hall <foo@cs.rice.edu>.
13) How to FTP by email.
There are a number of sites that archive the Usenet sources newsgroups
and make them available via an email query system. You send a message
to an automated server saying something like "send comp.sources.unix/fbm",
and a few hours or days later you get the file in the mail.
In addition, there used to be some FTP-by-mail servers, which would accept
FTP commands by mail and then mail back the results. Unfortunately, the
services were abused, and have been shut down.