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GraphicsMagick Authors

The following people have contributed substantially to the development of GraphicsMagick. Please let us know if an author is missing, or a significant contribution was made and not recorded.

## GraphicsMagick Group Member Authors

Mike Chiarappa

                    Created and maintains the Borland C++ Builder 6.0 build
                    environment for GraphicsMagick.

Bob Friesenhahn

                    Principal maintainer of GraphicsMagick. Author of
                    Magick++ (C++ API to ImageMagick and GraphicsMagick).
                    Author of module loader facility, automatic file
                    identification (magic) support, Unix/Cygwin/MinGW
                    configure/make facility, Windows setup.exe style
                    installer, WMF renderer, C API documentation formatter,
                    and the C, C++, and Perl test suites used by ImageMagick
                    and GraphicsMagick.

William Radcliffe

                    Author of the VisualMagick project configure facility for
                    Visual C++. Author of FlashPix module. Author of the
                    ImageMagickObject COM object for Windows. Author of the
                    EMF, XTRN, and META coders. Significant contributions to
                    the MSL, JPEG, TIFF, SVG, and URL coders. Authored
                    "process" module support. Wrote the micro-timer facility
                    used by 'identify'. Ported module loader support to
                    Windows. Significantly improved polygon rendering
                    performance.

Glenn Randers-Pehrson

                    Contributed significantly to the utilities, including
                    writing the 'gm' utility wrapper. Authored support for
                    JNG, MNG, and PNG formats. Provided significant support
                    for the BMP format. Significant improvements to the
                    documentation, including creating a documentation
                    authoring environment based on the <imdoc> format.

Leonard Rosenthol

                    Authored the 'conjure' utility and associated MSL
                    execution environment. Provided MacOS support. Authored
                    the CLIPBOARD, XCF, and PSD coders. Postscript and PDF
                    expertise. Significant drawing enhancements including
                    support for dash patterns, linecap stroking, clipping
                    masks and a mask image.

Lars Ruben Skyum

                    Contributed the -clippath functionality, added
                    -define support, improved color profile support,
                    and re-wrote the PS3 coder.

## Non-Member Authors

John Cristy

                    Creator, principal author, and principal maintainer of
                    ImageMagick, from which GraphicsMagick is originally
                    derived (from ImageMagick 5.5.2).  Also the author of
                    the Wand API to ImageMagick which is incorporated as
                    a stand-alone library by GraphicsMagick.

Jaroslav Fojtik

                    Authored the ART, CUT, MATLAB, TOPOL, and WPG
                    coder modules.

Kelly Bergougnoux

                    Authored the Cineon coder.

Christopher R. Hawks

                    Authored the PALM coder.

Francis J. Franklin

                    Ported the WMF coder to the libwmf 0.2 API.

Rick Mabry

                    Contributed code to support filling drawn objects using a
                    pattern image.

Nathan Brown

                    Original author of the JP2 coder.

Kyle Shorter

                    Original author of PerlMagick. Original author of the
                    LOCALE coder.

Markus Friedl

                    Original author of Base64 encode/decode sources.

David Harr

                    Contributed (with Leonard Rosenthol) dash pattern,
                    linecap stroking algorithm, and minor rendering
                    improvements.

Troy Edwards

                    Authored the source RPM spec file for GraphicsMagick.

Milan Votava

                    Contributed support for Wireless BitMap, used in WAP -
                    Wireless Access Protocol.

## Additional Acknowledgements

David Pensak, E. I. du Pont de Nemours and Company

                    For providing the computing environment that made
                    developing ImageMagick possible.

Alexander Zimmermann

                    Responsible for the ImageMagick Linux binary
                    distributions for many years. His efforts are very much
                    appreciated.

Paul Heckbert, Carnegie Mellon University

                    Image resizing is based on Paul Heckbert's Zoom program.

Paul Raveling, USC Information Sciences Institute

                    The spatial subdivision color reduction algorithm is
                    based on his Img software.

Michael Halle, Spatial Imaging Group at MIT

                    For the initial implementation of Alan Paeth's image
                    rotation algorithm.

Peder Langlo, Hewlett Packard

                    Made hundreds of suggestions and bug reports. Without
                    Peder, this software would not be nearly as useful as it
                    is today.

Rod Bogart and John W. Peterson, University of Utah

                    Image compositing is loosely based on rlecomp of the
                    Utah Raster Toolkit.

Alvy Ray Smith and Eric Ray Lyons

                    HWB color transform and algorithm.

Thomas R Crimmins

                    Inventor of the eight hull algorithm used for speckle
                    reduction.

Image manipulation software that works like magic.