by Marc van Kreveld. This paper looks at a method for compressing geographical elevation data.

http://archive.cs.uu.nl/pub/RUU/CS/techreps/CS-1997/1997-32.pdf

A CodeProject article describing a way to search through multiple Zip archives.

http://www.codeproject.com/useritems/ZipSearch.asp

A shareware backup program that saves your stuff to the Zip format. We like that.

http://avatarsoft.com/free/simpleserver.exe?product&s=23371&pg=Back2zip_About&avSID=h23403
279605320&avSID=h23403279605320

A paper by Eduardo Enrique González Rodriguez that describes a proposed new method of entropy encoding. Eduardo overcomes some of the problems faced by Huffman coding in certain circumstances, such as a very small alphabet.

http://datacompression.info/Miscellaneous/rfdoc.rtf

The source code to accompany Eduardo Enrique Gonzalez Rodriguez’s artice on RF coding, his proposed new entropy encoder. (Note that this archive contains his paper as well, so you don’t need to download both.)

http://datacompression.info/Miscellaneous/rf-coder.tgz

This product converts your photos to JPEG-2000 format to speed up the process of sending them by mail. And how do your friends view these photos when they get them? Well, it appears that AMC will be happy to give them a free JPEG 2000 viewer.

http://www.amux.com/

This Win32 archiver is free if all you ever do is unzip files. Creating Zip files is going to require registration and you coughing up a few bucks.

http://www.edisys.com/Products/eZip_Wizard__32_bit_/ezip_wizard__32_bit_.asp

A survey paper that covers the current roster of popular encoding algorithms, such as Base64, Base32, Hex, etc.

http://www.imagingstuff.com/binaryencoding.pdf

GNUNetPress - Network compression client/server software. Compresses data over slow networks to save on the cost of bandwidth. Server is developed for Unix platforms, The client will run on Linux or Windows based PCs.

http://sourceforge.net/projects/gnunetpress/

A lecture in German on LZ coding.

http://www.stud.uni-karlsruhe.de/~un55/lz_ToC.html

This article describes STL-compliant iostream implementations that compress and decompress using the deflate and bzip2 algorithms. It makes it really easy to use compressed streams in your C++ app.

Updated July, 2003, to fix a gzip header problem.

Updated August, 2003 to fix a couple of minor problems.

http://www.codeproject.com/vcpp/stl/zipstream.asp

This toolkit lets you access EXIF metadata that has been stored in JPEG files, typically from a digital camera.

http://openexif.sourceforge.net/

OpenTiff is an object-oriented interface to TIFF formated image files. Unlike other Tiff toolkits, it allows an arbitrary set of tags to be defined and used in a Tiff file.

http://opentiff.sourceforge.net/

Just what is says, Microsoft’s tutorial on building WMA plugins.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/Building_Windo
ws_Media_Player_and_Windows_Media_Encoder_Plug_ins.asp?_r=1

ExpressZIP features all of the powerful ZIP tools you’ll ever need in an easy to use and attractive interface and comes complete with built-in Wizards to walk you through creating ZIP and EXE (self extracting) archives.

Version 4.0 shipped in September, 2003.

http://www.avantrix.com/exzip.htm

A .NET library for reading EXIF metadata from JPEG files.

http://codeproject.com/useritems/exif_reader.asp

This archiver is built specifically for support of image archiving. Supports popular formats such as JPG and BMP.

http://www.zip-i-mage.com/

The well-respected ARJ archiver is now available as Open Source software. This portable version targets DOS, OS/2, Linux, and FreeBSD. See the project home page for binary versions of previous commercial/shareware versions. (These versions were free for personal use, but not commercial.)

ARJ 2.78/3.10 build 17 is shipping in September, 2003.

http://sourceforge.net/projects/arj

An Open Source library that implements an LZSS algorithm, designed for speed. ANSI C, with 16- and 32-bit x86 assembler versions available as well.

http://www.ibsensoftware.com/

This open source Linux project converts image files (JPEG, GIF, PNG, etc.) to Encapsulated PostScript, in what is supposed to be an efficient manner.

http://imgtops.sourceforge.net/

Free PDF Compressor that removes duplicate PDF objects, optionally takes advantage of new compression features of latest PDF specification (1.5), and optionally takes advantage of a new proposed format called “Compact PDF” that for many classes of documents compresses 30 - 60% better than what is possible in PDF 1.5.

Note: Navigate up two levels to get to Tom’s download page.

Version 2.2 is shipping as of February, 2004.

http://http.cs.berkeley.edu/~phelps/Multivalent/Tools/pdf/Compress.html

Comparisions of over 230 archivers, in handy Excel format, from Berto.

Reader Emiliano C. said “Wonderful! Great! Wonderful! Cool!”

http://cs.fit.edu/~mmahoney/compression/ct.xls

This is a console-mode Linux program built for processing of video streams. Currently supported modules provide support for DVD format, DV, DivX, and more. Lots of good stuff in here for serious video production bloke.

Version 0.6.10 shipped in September, 2003.

http://www.theorie.physik.uni-goettingen.de/~ostreich/transcode/

An Open Source Suffx Tree implementation. Looks as though this might be oriented towards teaching applications, as it is an interactive application, not just an implementation of the data structure.

http://bioinformatics.rit.edu/~tex/publications/suffixtree/

A C implementation of a Suffix Tree. This project also includes a Perl module that can use the C code.

http://cs.haifa.ac.il/~shlomo/suffix_tree/

This code project piece uses the octree algorithm to reduce the number of colors in a bitmap. Like most of the code project stuff, it is implemented as a class compatible with Visual C++ and MFC.

Last update of this article was September, 2003.

http://www.codeproject.com/bitmap/cquantizer.asp

jzip.org is a WinZip like program written in java. The project aims to provide the ultimate zip tool free of proprietary code and portable to virtually any modern operating system. Preconfigured binary packages are provided for Windows 9x, Windows 2000 and of course for Linux (that one should fit any Unix-like system).

Release 0.20 w/numerous bug fixes shipped in September, 2003.

http://jzipdotorg.cjb.net/

Frank Eden’s article on The Code Project web site is summed up quite well by the title. About the only thing I have to add is to point out that it is designed to work with JPEG images.

http://www.codeproject.com/cs/media/JPEGviewer.asp

Brian Livingston’s short article on HTTP compression provides some pointers detailing how to configure your server to serve compressed content.

http://itmanagement.earthweb.com/columns/executive_tech/article.php/3068161

JPEG compression and decompression routines in ANSI Lisp.

http://sourceforge.net/projects/cljl