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# GraphicsMagick Thanks

We would like to thank the following organizations or individuals who may have not contributed code but contributed substantially in other ways:

- Fuzz Testing
- Security Analysis/Reports
- Static Code Analysis
- Software Analysis Tools
- Additional Acknowledgements

# 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.

Copyright © GraphicsMagick Group 2002 - 2020

This program is covered by multiple licenses, which are described in Copyright.txt. You should have received a copy of Copyright.txt with this package; otherwise see http://www.graphicsmagick.org/Copyright.html.