GraphicsMagick Thanks
We would like to thank the following organizations or individuals who may have not contributed code but contributed substantially in other ways:
Project Hosting
Hosting at https://foss.heptapod.net/ (since 2023) is donated by Clever Cloud <https://clever-cloud.com/> and Octobus <https://octobus.net/>.
Hosting at https://sourceforge.net/ (since 2003) is provided for free by SourceForge <https://sourceforge.net/about>.
Hosting at http://www.graphicsmagick.org/ (since 2003) is provided by Bob Friesenhahn.
Fuzz Testing
Gustavo Grieco
Agostino Sarubbo
Jodie Cunningham
Gynvael Coldwind and Mateusz Jurczyk of the Google Security Team
Hanno Böck
Tobias Ospelt
Michal Zalewski
Moshe Kaplan
Security Analysis/Reports
John Lightsey
David Chan
Federico Larumbe
Petr Gajdos
Static Code Analysis
Coverity was used (free of charge) to perform static code analysis of the software. After resolving many issues, there are now zero reported defects per 1000 lines of code.
Software Analysis Tools
American fuzzy lop was used (by many) to produce and discover many of the files which caused problems for the software.
QuickFuzz was used (by Gustavo Grieco) to discover issues in the SVG renderer. QuickFuzz provides specific support for a set of file formats and is very good at chasing down and isolating weaknesses.
AddressSanitizer (ASan) was used to detect and isolate memory access issues.
Valgrind was used to detect and isolate memory access issues as well as memory leaks.
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.