Greg Roelofs

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Quick Index to Greg's Web Pages:

* Home Page and Brief Bio
* Early Life
* College Years at the University of Minnesota
* Vaguely Amusing College Stories
* Bachelorhood
* Grad School Years at the University of Chicago
* Doctoral Research at NASA Ames
* Philips Research in Silicon Valley
* AlphaWorld Multi-resolution Map (appears to have died the final death, alas)
* Introduction
* AlphaWorld Monorail
* About the Map (statistics)
* Complete version (very wide)
* News
* Frequently Asked Questions (FAQ)
* Top Level
* Quick Navigation
* Density Map (also animated version)
* VRML Model
* Other Maps (someday)
* Yahoo! Search
* Résumé (detailed version)
* Hobbies:
* 3D modeling [New!]
* 43487 galaxies from the 2-Micron All-Sky Survey
* ~1200 local galaxies (more accurate!)
* very simple geometric model
* vertically exaggerated model of a San Francisco hike
* aggregate traces of some LinkedIn rides in the South Bay
* one of many ski traces (no terrain or map)
* Linux, the OS for Real Stud Hombre Cybermuffins
* Stupendously Cool Linux Pictures
* Stupendously Cool Linux Penguins
* Still More Cool Linux Pictures
* Linux Virtual-Beer Logo Concept (ancient)
* The Future of Linux Panel Discussion, 14 July 1998
* Prepared Question #1
* Audience Q & A
* Phil Hughes Questions
* Prepared Question #2
* More Audience Q & A
* Door Prizes and Demos
* Linux User Group of Davis PNG Presentation, 7 March 2000
* Slide 1 
* Slide 2 
* Slide 3 
   * Slide 4 
  * Slide 5 
  * Slide 6 
   * Slide 7 
  * Slide 8 
  * Slide 9 
   * Slide 10 
  * Slide 11 
  * Slide 12 
* OS/2 and Other Warped Concepts
* Spiffy Ray-traced OS/2 Pictures
* More Spiffy OS/2 Pictures and Games Previews
* OS/2 Background Pictures from David Barnes
* OS/2 BAUG DevSIG Tip o' the Month, February 1995
* Example: Multi-compiler Makefile
* Example: Using Predefined Macros
* Books, Both Good and Bad
* Amateur Photography
* Large, Multi-legged Creatures
* More Multi-legged Creatures
* Doom (cough)
* Writings
* Personal Life
* Wedding Pics (never fear, only two of them)
* Roelofs, Pennsylvania and Roelofs Gully, Michigan
* The Dark Side

* Programming and Other Hackery

* PNG (Portable Network Graphics) Home Page

* PNG Information:
* A Basic Introduction to PNG Features
* Current Status of PNG
* Status Snapshot of February 1999
* Status Snapshot of June 2000
* Frequently Asked Questions (FAQ)
* Configuring IIS 4.0 for PNG
* History of PNG
* News (and More History) of the PNG Development Group
* 1995 
* 1996 
* 1997 
 * 1998 
* 1999 
* 2000 
 * 2001 
* 2002 
* 2003 
 * 2004 
* 2005 
* 2006 
 * 2007 
* 2008 
* PNG Technical Documentation
* PNG Specification and Extensions:
* Joint W3C and ISO/IEC version
* PNG Extensions and Register of Public Chunks and Keywords
* Older versions:
* Version 1.2 (includes Gamma Tutorial and Color Tutorial)
* Version 1.1
* Version 1.0
[cover] * PNG: The Definitive Guide (O'Reilly book)
* Detailed table of contents
* Source code
* Errata list
* Random notes and timeline
* Complete text (GNU Free Documentation License)
* PNG-Supporting Applications:
* Applications with PNG support:
* Browsers
* Image Viewers
* Image Editors
* Image Converters
* 3D Applications
* Games / Entertainment
* Office / Business Applications
* Scientific / Graphing Applications
* Miscellaneous Applications
* PNG Support in VRML Browsers
* ImageTexture Examples on Opaque Materials:
* Palette-based Textures
* 8-bps Grayscale and RGB Textures
* 16-bps Grayscale and RGB Textures
* ImageTexture Examples on Partially Transparent Materials:
* Palette-based Textures
* 8-bps Grayscale and RGB Textures
* 16-bps Grayscale and RGB Textures
* Hardware with PNG Support
* PNG Programming Resources:
* PNG-supporting Libraries and Toolkits
* libpng home page
* PNG Source Code
* png2linuxlogo
* pngcheck
* pnggen
* pngmeta
* pngquant
* pnmtopng
* ptot (png2tiff)
* tiff2png
* PNG Support in Mozilla (old)
* Build Notes (older)
* PNG Images:
* Willem van Schaik's PNG Test Suite
* ...without broken PNGs
* PNG VRML Texture Suite in 2D
* Ray-traced PNG Interlacing Demo (also JPEG version)
* Miscellaneous Transparent PNGs using IMG Tags
* ...with a background image (fairly unreadable!)
* Miscellaneous Transparent PNGs using OBJECT Tags
* ...with a background image (fairly unreadable!)
* strict HTML 4.0 version
* Miscellaneous 32-bit RGBA PNGs
* Photographic PNGs with Alpha Channels:
* Icicles
* Redbrush flower (Ohia Lehua)
* Magnolia tree
* Horned Owl
* Browser Gamma-Correction Consistency Test
* Single-page Quick Test
* Unlabelled GIFs on HTML Colors ("control group") or CSS colors
* Unlabelled PNGs on HTML Colors or CSS colors
* Gamma-labelled PNGs (1/1.6) on HTML colors or CSS colors
* Gamma-labelled PNGs (1/2.2) on HTML colors or CSS colors
* sRGB-labelled PNGs on HTML colors or CSS colors
* ICC-profile-labelled PNGs (1/1.0) on HTML colors or CSS colors
* Browser Color-Correction Test
* Netscape Navigator / PNG bKGD Test
* Screenshots of Browsers and PNG Transparency, Gamma and Color Correction:
* Arena beta 3b for Linux (one of the first)
* CSCMail 1.7.8 for Linux (pretty good)
* Dillo 0.6.2 for Linux (pretty good)
* iCab 1.9 beta for Mac OS (also pretty good)
* Internet Explorer 5.0 for Mac OS (pretty good)
* Internet Explorer 7.0b1 for Windows (pretty good)
* Konqueror 3.0 for Linux (getting there but needs work)
* Mozilla 2000-04-14 for Linux (at last!)
* also using random-dithered binary transparency
* NetPositive 2.2 for BeOS (pretty good)
* OmniWeb 3.1rc2 for Mac OS X Server (pretty good)
* Opera 6.0b1/TP1 for Windows and Linux (pretty good)
* Oregano 2 for RISC OS (pretty good)
* WebTV (getting there but needs work)
* Links to Other PNG Resources and Images

* MNG (Multiple-image Network Graphics) / JNG Home Page

* News and History of the MNG Developers
* 1996 
* 1997 
* 1998 
 * 1999 
* 2000 
* 2001 
 * 2002 
* 2003 
* 2004 
 * 2005 
* 2006 
* MNG Technical Documentation
* MNG Specification 1.0 - includes subsets:
* MNG-LC (low complexity)
* MNG-VLC (very low complexity)
* JNG (JPEG Network Graphics: JPEGs with PNG transparency)
* Applications with MNG Support:
* Browsers
* Image Viewers
* Image Editors
* Image Converters
* 3D Applications
* Games / Entertainment
* Office / Business Applications
* Scientific / Graphing Applications
* Miscellaneous Applications
* Hardware with MNG Support
* MNG-supporting Libraries and Toolkits
* MNG and JNG Images
* Links to Other MNG Resources

[Info-ZIP] * Info-ZIP Home Page

* News, History and Other Stuff
* Frequently Asked Questions (FAQ)
* License
* Zip
* UnZip
* Pocket UnZip
* WiZ

* zlib Home Page

* zlib Documentation
* Manual
* Technical Details
* Deflate Algorithm
* License
* Frequently Asked Questions (FAQ)

* XV Jumbo Patches

* NetPBM Alpha-Channel Hacking

* Collected Net (and Other) Humor:

* Roger Zelazny:
* The Agnostic's Prayer
* Travelling through Shadow
* Usenet:
* The Signs of Doom Interpreted (no, not the game...)
* Smiley Sex
* The Cave Newt Pledge
* Poetry:
* Physics Theoretical
* The Story of Mel, a Real Programmer
* Love Guppy
* My Buddy
* Dorothy Parker on Gun Control
* Bill Bixby Memorial Haiku
* The Fateful Journey of Montgomery Scott
* Songs:
* Unix Wizard
* The Programmer Song
* The Philosopher Song
* My Favourite Things...
* Star Trek Christmas Carols
* Gingrich the Newt
* Essays:
* Dave Barry: Cybermuffin
* How to "Fly" a Plane

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

[wedding photo of Greg by Dan Warsinger]

This photograph is copyright © 1993 Dan Warsinger. Dan was an amazingly studly photographer, both technically and professionally; he was also a really nice guy. Highly recommended for anyone getting hitched in the Yosemite area. And no, Greg is not Weird Al.

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Last modified 30 June 2025 by Greg Roelofs, you betcha.