Author Page
News and History of the PNG Development Group
What’s going on with PNG? Inquiring minds want to know! Note that this page includes links to the history pages for previous years, currently 1995-1998
Introduction to JBIG
The comp.compression FAQ gives you this introduction.
http://www.faqs.org/faqs/compression-faq/part2/section-5.html
How PNG’s Two-Dimensional Interlacing Works
Lots of pictures and explanations from Greg R. describing how PNG works. I bet a lot of this made it into Greg’s fine PNG book. (Note that the graphics on this page use PNG and MNG.)
Introduction to JPEG
The comp.compression FAQ provides you with an introduction.
http://www.faqs.org/faqs/compression-faq/part2/section-6.html
How PNG’s Two-Dimensional Interlacing Works
Lots of pictures and explanations from Greg R. describing how PNG works. I bet a lot of this made it into Greg’s fine PNG book. (Note that the graphics on this page use GIF images for animation.)
What is Vector Quantization?
The comp.compression FAQ provides you with an answer to this question.
http://www.faqs.org/faqs/compression-faq/part2/section-7.html
Miscellaneous PNG Images using OBJECT Tags
Miscellaneous PNG Images, including some that Greg R. uses to point out problems in various browsers.
Introduction to Fractal compression
The comp.compression FAQ provides you with this introduction.
http://www.faqs.org/faqs/compression-faq/part2/section-8.html
PNG Suite from Willem van Schaik
This is Willem van Schaik’s suite of PNG icons for testing PNG decoder engines, PNG viewers, and PNG browsers.
The Burrows-Wheeler block sorting algorithm
The comp.compression FAQ provides some details.
http://www.faqs.org/faqs/compression-faq/part2/section-9.html
PNG Support in VRML Browsers
Why does this matter? Apparently you can use PNG files for texture maps in VRML browsers. Learn more about the topic here.
Image compression hardware
The comp.compression FAQ provides a pointer or two.
http://www.faqs.org/faqs/compression-faq/part3/section-1.html
I need source for arithmetic coding
The relevant answer to this question from the comp.compression FAQ.
http://www.faqs.org/faqs/compression-faq/part1/section-12.html
Zoox is an enhanced version of zoo 2.01
Zoox is an enhanced version of zoo 2.01 from Andre van Dalen. It will allow you to archive a set of files into a series of zoo archives, each limited to a size that you specify. Thus a large number of files on a hard disk can be stored in compressed form on […]
Lossless Data Compression Toolkit
Version 1.1 of the lossless data compression toolkit by Nico deVries. The C sources in this toolkit include an LZW compressor, AR002 archiver, a PPM like compressor using arithmetic compression, Huffman compressor, splay tree program, and LZRW1. Quite a variety.
Vector quantization of image subbands: a survey
by P.C. Cosman, R.M. Gray, and M. Vetterli, IEEE Transactions on Image Processing, February 1996. They discuss using VQ in combination with subband and wavelet decompositions.
Waterloo BragZone test suite
In the BragZone you will find the following:
A suite of test images, the “Waterloo Repertoire”.
Rate-Distortion plots for various compression codecs.
The data from which the above plots are derived.
Sample images at selected compression ratios.
comp.compression FAQ
The official source for the comp.compression FAQ.
Fractal Frequently Asked Questions and Answers
Mirror of the FAQ
MNG documents
This ftp site appears to contain a ton of MNG documentation, specs, etc. This is the official ftp site for the MNG project, the web pages are still being hosted at the www.cdrom.com site.
FTP directory containin the suite of test images used in the PNG test suite from Willem van Schaik
Waterloo Fractal Compression Project
The Waterloo Fractal Compression Project is part of a general research programme dedicated to the study of fractal analysis and Iterated Function Systems/Fractal Transforms from both theoretical as well as practical perspectives.
Waterloo BragZone
Comparing different image compression programs has always been difficult. As a suite of test images and a place for archiving results, the Waterloo BragZone hopes to overcome these problems. Central to the effort is the Waterloo Repertoire, a suite of 32 test images
EGI compression schemes
This page discusses the various compression schemes used by EGI, Shannon-Fano, BWT, and RLE. EGI is a player of animation sequences.
DENOISE
A huge program that shows up in a Wavelets link page. I’m not using it because it appears to not be related to data compression.
http://pascal.math.yale.edu/pub/wavelets/software/denoise/demo-sparc/
UCSB Signal Compression Lab
Various research areas of some interest in here.
A comparison of Internet audio compression formats
A good comparsion chart showing the relative merits of various audio formats. Includes links to definitions and other support information for each format.
