ImageMagick 3.9.2 README

"I swear by my life and my love of it that I will never live for the sake of another man, nor ask another man to live for mine"
John Galt in Atlas Shrugged, by Ayn Rand

Author
Availability
WWW
Mailing List
Memory Requirements
UNIX Compilation
Extra Programs and Libraries
How to Compile
VMS Compilation
NT Compilation
Macintosh Compilation
Animation
16-BIT Imaging
64-BIT Machines
MIFF Image Format
Copyright

Author

The author is cristy@mystic.es.dupont.com. This software is NOT shareware. However, I am interested in who might be using it. Please consider sending me a picture postcard of the area where you live. Send postcards to

      John Cristy
      P.O. Box 40
      Landenberg, PA  19350
      USA

I'm also interested in receiving coins from around the world.

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Availability: ImageMagick, version 3.9.2, is available on ftp.wizards.dupont.com. ImageMagick client exectuables are available for some platforms. Macintosh, NT, VMS, and Linux source and binaries are also available.
I want ImageMagick to be of high quality, so if you encounter a problem I will investigate. However, be sure you are using the most recent version from ftp.wizards.dupont.com, or a mirror site, before submitting any bug reports or suggestions.

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WWW

The official ImageMagick WWW page is at www.wizards.dupont.com. Another useful ImageMagick WWW page is The Imaging Machine

To use display as your external image viewer, edit the global mailcap file or your personal mailcap file .mailcap (located in your home directory) and put this entry:

      image/*; display %s

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Mailing List

There is a mailing list for discussions and bug reports about ImageMagick. To subscribe send the message

      subscribe magick

to majordomo@wizards.dupont.com. You will receive a welcome message which tells you how to post messages to the list magick@wizards.dupont.com.

Memory Requirements: You should allocate sufficient swap space on your system before running ImageMagick; otherwise, you may experience random server or application crashes. Anything less than 80 megabytes of swap space is likely to cause random crashes.; On many systems, you will find that 80 megabytes is insufficient and you will have to allocate more swap space. You should also have at least 32 megabytes of real memory although 64 megabytes or more is recommended.

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UNIX Compilation

Type:

      gunzip ImageMagick-3.6.5.tar.gz
      tar xvf ImageMagick-3.6.5.tar
      cd ImageMagick

You might want to check the values of certain program definitions before compiling. Change the definitions of ApplicationDefaults, BrowseCommand, EditorCommand, PostscriptColorDevice, PrintCommand, RGBColorDatabase, and TemporaryDirectory in magick/magick.h to suit your local requirements. Next, edit Magick.tmpl and set the variables to suit your local environment. Finally type:

      xmkmf
      make Makefiles
      make -k

Note, ImageMagick requires an ANSI compiler. If the compile fails, first check to ensure your compile is ANSI compatible. If it fails for some other reason, try

      cd magick
      make -k
      cd ..
      make -k

If you do not have gunzip(1), it is available on prep.ai.mit.edu. If you do not have xmkmf(1), or if xmkmf(1) fails to produce usable Makefiles, type

      configure
      make

If you use gcc and get a link error, recompile with the option -fPIC. If you use gcc and get a core dump, recompile with the option -fwritable-strings. Change ReadBinaryType to "r" and WriteBinaryType to "w" in magick/magick.h for FreeBSD.

Finally type:

      display images/aquarium.miff
      display -monochrome -dither images/aquarium.miff

If the program faults make sure that you may have inadvertingly linked to an older version of the libMagick library. In this case type

      cd ImageMagick/magick
      make install
      cd ..
      make

If the image colors are not correct use this command

      display -visual default images/aquarium.miff

You can find other example images in the images directory.

For additional information, see the manual pages for these ImageMagick utilities

display

convert

montage

identify

animate

import

mogrify

combine

Also read the ImageMagick Frequently Asked Questions This is a required reading. Most of the questions I get via electronic mail are answered in this document.

Place display X application defaults in /usr/lib/X11/app-defaults/Display. Use the appropriate name for other clients (e.g. Animate, Montage, etc). To execute display from as a menu item of any window manager (olwm, mwm, twm, etc), use

    display logo:Untitled

The ImageMagick utilities read and write MIFF images. Refer to the end of this message for more information about MIFF. Use convert to convert images to and from the MIFF format.

ImageMagick utilities recognizes many image formats and for your convenience automatically converts most of these alien image format to MIFF at execution time. However, the MIFF image format has several advantages over most image formats (i.e. runlength encoding, visual image directories, digital signature on an image colormap, etc.). ImageMagick is designed to exploit these advantages. Whenever possible convert an alien image format to the MIFF format before using the various ImageMagick programs.

Other formats may also be recognized. See convert for a list of valid image formats. You can specify a particular image format by prefixing the image filename with the image type and a colon (i.e. ps:image).

Extra Programs and Libraries: To further enhance the capabilities of ImageMagick, you may want to get these programs or libraries:

X11 Stubs

ImageMagick requires the X11 libraries. If your system does not have them, use this library instead. Display, animate, or import will not work with this library. The remaining programs have reduced functionality.

Background Texture

ImageMagick requires a background texture for the TILE format and for the -texture option of montage. You can use your own or get samples or get additional samples from KPT.

RALCGM

ImageMagick requires ralcgm to read Computer Graphic Metafile images (may not compile under linux).

TransFig

ImageMagick requires fig2dev to read TransFig images.

GET

ImageMagick requires GET to read images specified with a World Wide Web (WWW) uniform resource locator (URL). Get(1) must be in /usr/local/bin. See WWWcommand in magick/magick.h to change its location. Note: do not confuse this get program with SCCS get program. If you do not have a HTTP server, you can use xtp, available in the ImageMagick distribution, for URL's whose protocol is FTP.

HDF

ImageMagick requires the NCSA HDF library to read and write the HDF image format.

JBIG

ImageMagick requires the JBIG-Kit software to read and write the JBIG image format.

JPEG

ImageMagick requires the Independent JPEG Group's software to read and write the JPEG image format. ImageMagick creates progressive JPEG images by default. Use the -interlace none option to create non-progressive images , or undef C_PROGRESSIVE_SUPPORTED in jmorecfg.h before you compile the library, or use JPEG version 5B.
Concerning iterative JPEG compression: see Kinoshita and Yamamuro, Journal of Imaging Science and Technology, Image Quality with Reiterative JPEG Compression, Volume 39, Number 4, July 1995, 306-312 who claim that (1) the iterative factor of the repetitive JPEG operation had no influence on image quality, and (2) the first compression determined base image quality.

MPEG

ImageMagick requires the MPEG library to read the MPEG image format. Use encoder encoder to write MPEG images.

PICTTOPPM

ImageMagick requires picttoppm to read Macintosh PICT images.

Postscript

ImageMagick requires Ghostscript software to read the PostScript or the Portable Document format. It is also required to annotate an image when an X server is not available. Note, Ghostscript must support the ppmraw device (type gs -h to verify). If Ghostscript is unavailable, the Display Postscript extension is used to rasterize a Postscript document (assuming you define HasDPS). The DPS extension is less robust than Ghostscript in that it will only rasterize one page of a multi-page document.

PNG

ImageMagick requires the PNG library to read the PNG image format. See Portable Network Graphics for more details.

RA_PPM

ImageMagick requires ra_ppm from Greg Ward's Radiance software to read the Radiance image format (may not compile under linux).

RAWTORLE

ImageMagick requires rawtorle from the Utah Raster Toolkit to write the RLE image format (may not compile under linux)..

TIFF

ImageMagick requires Sam Leffler's TIFF software to read and write the TIFF image format.

ZLIB

ImageMagick requires the ZLIB library to read the PNG image format or read or write ZLIB compressed MIFF images.

How to Compile: To display images in the HDF, JPEG, MPEG, PNG or TIFF format, get the HDF, JPEG, MPEG, PNG, TIFF, or XPM archives and build ImageMagick as follows:

HDF

cd ImageMagick gunzip -c HDF4.0r2.tar.gz | tar xvf - mv HDF4.0r2 hdf cd hdf configure make -k allnofortran cd ..

JBIG

cd ImageMagick gunzip -c jbigkit-0.9.tar.gz | tar xvof - mv jbig-kit jbig cd jbig make cd ..

JPEG

cd ImageMagick gunzip -c jpegsrc.v6a.tar.gz | tar xvof - mv jpeg-6a jpeg cd jpeg configure CC=cc -with-maxmem=7 make cd ..

MPEG

cd ImageMagick mkdir mpeg cd mpeg gunzip -c mpeg_lib-1.1.tar.gz | tar xvof - mv mpeg_lib/* . edit Makefile as instructed; for Solaris use the BSD-compatibility libraries or replace bzero with a call to memset make cd ..

PNG

cd ImageMagick gunzip -c zlib-1.0.4.tar.gz | tar xvf - cd zlib make cd .. gunzip -c libpng-0.96.tar.gz | tar xvf - mv libpng-0.96 png cd png make cd ..

TIFF

cd ImageMagick gunzip -c tiff-v3.4beta037.tar.Z | tar xvof - mv tiff-v3.4beta037 tiff cd tiff configure make cd ..; If your computer system supports shared libraries you must type
make install; Finally, perform the following:
cd ImageMagick edit Magick.tmpl and define Has???? as instructed xmkmf make Makefiles make clean make; If you do not have xmkmf, try
configure make clean make -k; If the compile fails due to a function redefinition it may be that either jpeg/jconfig.h or mpeg/mpeg.h is redefining const. Fix this problem and try again.; You can now display images in the HDF, JBIG, JPEG, MPEG, PNG or TIFF format.; If you have HDF, JBIG, JPEG, MPEG, PNG, and TIFF sources installed as directed above, you can also type
Install sun; Substitute the appropriate machine type (aix, hpux, sgi, etc).

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VMS Compilation

You might want to check the values of certain program definitions before compiling. Change the definitions of ApplicationDefaults, DocumentationBrowser, EditorCommand, PostscriptColorDevice, PrintCommand, and RGBColorDatabase in magick/magick.h to suit your local requirements. Next, type.

Type

      @make
      set display/create/node=node_name::

where node_name is the DECNET X server to contact.

Finally type:

      display [.images]aquarium.miff
      display -monochrome -dither [.images]aquarium.miff

Alternatively, get a zipped distribution (with JPEG, MPEG, TIFF, and XPM) from ftp.wizards.dupont.com.

The VMS JPEG, TIFF, and XPM source libraries are available on axp.psl.ku.dk in [anonymous.decwindows.lib].

Thanks to pmoreau@cenaath.cena.dgac.fr for supplying invaluable help as well as the VMS versions of the JPEG, MPEG, TIFF, and XPM libraries.

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NT Compilation

The NT distribution contains MetroWerks Codewarrior Professional projects and a Visual C++ workspace (thanks to Bill Radcliffe) for compilation. For those who do not have access to CodeWarrior or Visual C++, the binaries for the command line utilities are enclosed.

If you have an NT X server like Exceed you will also need to include

    SET DISPLAY=:0

in Autoexec.bat and restart your computer. Without an X server you can still display or animate to, or import from, a remote X server. Convert, mogrify, montage, combine, and identify, will work with or without an X server directly from the command prompt.

Import does not seem to work with Exceed. Try

    convert x:root image.gif

instead.

The pre-compiled NT binaries expect to find Ghostscript as c:/gs/gswin32.exe. Otherwise, you will be unable to convert or view Postscript documents.

To compile the source with Codewarrior, start with Magick/Magick.mcp and then animate.mcp, convert.mcp, etc.. The Visual C++ workspace is MagickApps/MagickApps.dsw.

And yes, the NT executables will work under Windows 95.

Macintosh Compilation: The Macintosh Macintosh distribution contains MetroWerks Codewarrior Professional projects for compilation. For those who do not have access to CodeWarrior, the binaries for the command line utilities are enclosed. I had to comment the inline intrinsic functions in math.h in order to compile. If you have a better solution, let me know. Display, animate, and import currently do not work on the Macintosh.; I'm looking for a volunteer to get Display and animate to work on the Macintosh. I also need a volunteer is needed to write a simple Mac program to call the libMagick routines and display an image in a window.

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Animation

To prevent color flashing on visuals that have colormaps, animate(1) creates a single colormap from the image sequence. This can be rather time consuming. You can speed this operation up by reducing the colors in the image before you animate them. Use mogrify to color reduce the images:

      mogrify +map -colors 256 scenes/dna.[0-9]*

Alternatively, you can use a Standard Colormap; or a static, direct, or true color visual. You can define a Standard Colormap with xstdcmap(1). For example, to use the "best" Standard Colormap, type:

      xstdcmap -best
      animate -map best scenes/dna.[0-9]*

or to use a true color visual:

      animate -visual truecolor scenes/dna.[0-9]*

Image filenames can appear in any order on the command line if the scene keyword is specified in the MIFF image. Otherwise the images display in the order they appear on the command line. A scene is specified when converting from another image format to MIFF by using the "scene" option with any filter. Be sure to choose a scene number other than zero. For example, to convert a TIFF image to a MIFF image as scene #2, type:

      convert -scene 2 image.tiff image.miff

16-BIT Imaging: By default, ImageMagick uses a color depth of 8 bits (e.g. [0..255] for each of red, green, blue, and transparency components). Any 16-bit image is scaled immediately to 8-bits before any image viewing or processing occurs. If you want to work directly with 16-bit images (e.g. [0..65535]), edit Magick.tmpl or Makefile.in and define QuantumLeap as instructed in the respective file. Next type

make clean make

In 16-bit mode expect to use about 33% more memory on the average. Also expect some processing to be slower than in 8-bit mode (e.g. Oil Painting, Segment, etc).
In general, 16-bit mode is only useful if you have 16-bit images that you want to manipulate and save the transformed image back to a 16-bit image format (e.g. PNG, VIFF).

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64-BIT Machines

Each pixel, within ImageMagick, is represented by the RunlengthPacket structure found in magick/image.h. Only 8 bits are required for each color component and 16 bits for the colormap index for a total of 6 bytes. If QuantumLeap is defined (see 16-BIT IMAGING above), the color component size increases to 16 bits for a total of 10 bytes. Some 64-bit machines pad the structure which can cause a significant waste of memory. For the cray, change the RunlengthPacket structure to this

    typedef struct _RunlengthPacket
    {
      unsigned char
        red : QuantumDepth,
        green : QuantumDepth,
        blue : QuantumDepth,
        length : QuantumDepth;

      unsigned short
        index : 16;
    } RunlengthPacket;

before compiling.

I'm not sure if this will work on other 64-bit machines that pad. If you know a better solution, please send me E-mail. Note, that the Dec Alpha apparently does not pad the structure so ImageMagick should be fine on this particular 64-bit machine.

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MIFF Image Format

MIFF is an image format which I developed. I like it because

It is machine independent. It can be read on virtually any computer. No byte swapping is necessary.
It has a text header. Most image formats are coded in binary and you cannot easily tell attributes about the image. Use more(1) on MIFF image files and the attributes are displayed in text form.
It can handle runlength-encoded images. Although most scanned images do not benefit from runlength-encoding, most computer-generated images do. Images of mostly uniform colors have a high compression ratio and therefore take up less memory and disk space.
It allows a scene number to be specified. This allows you to specify an animation sequence out-of-order on the command line. The correct order is determined by the scene number of each image.
MIFF computes a digital signature for images. This is useful for comparing images. If two image files have the same signature, they are identical images.
There is a montage keyword allowing an image to act as a visual image directory. See display(1) for more details.

One way to get an image into MIFF format is to use convert or read it from an X window using the import program. Alternatively, type the necessary header information in a file with a text editor. Next, dump the binary bytes into another file. Finally, type

      cat header binary_image | display -write image.miff -

For example, suppose you have a raw red, green, blue image file on disk that is 640 by 480. The header file would look like this:

      id=ImageMagick columns=640 rows=480 :

The image file would have red, green, blue tuples (rgbrgbrgb...). Refer to the display manual page for more details.

Copyright: Copyright 1997 E. I. du Pont de Nemours and Company Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of E. I. du Pont de Nemours and Company not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. E. I. du Pont de Nemours and Company makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.; E. I. du Pont de Nemours and Company disclaims all warranties with regard to this software, including all implied warranties of merchantability and fitness, in no event shall E. I. du Pont de Nemours and Company be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of this software.

Image manipulation software that works like magic.

HDF

JBIG

JPEG

MPEG

PNG

TIFF