Archives
BWT in Matlab
Imran Akthar’s implementation of the BWT transform in Matlab. Free.
http://www.geocities.com/imran_akthar/files/bwt_matlab_code.zipArgentum Backup
This backup program stores your data in standard Zip files, created either manually or automatically. The usual host of backup features are supported, such as the ability to backup the registry, E-mail messages, your address book, and so on. You can download a 15-day trial version of this commercial program.
It appears that version 2.10 of […]
http://www.argentuma.com/backup.htmlZip and Unzip from a C# program using J# runtime
Microsoft’s implemention of J# includes the standard Java zip classes, and CodeProject contributor Valeri has figured out how to use them from a C# program.
http://codeproject.com/csharp/VmEasyZipUnZip.aspread more from " Zip and Unzip from a C# program using J# runtime "
Accusoft’s Image Compression Stable
A list of the various types of image compression that Accusoft supports, along with a little detail on each type.
http://www.accusoft.com/imaging/imagegear/imagegear_functions/image_compression.aspAccusoft
Accusoft makes a variety of imaging products, including a nice commercial imaging library.
http://accusoft.com/home.aspMichael Dipperstein’s Run Length Encoding (RLE) Page
The ever-productive Michael Dipperstein now has a useful page on Run Length Encoding, including ANSI C code.
http://michael.dipperstein.com/rle/index.htmlread more from " Michael Dipperstein’s Run Length Encoding (RLE) Page "
Shorten fork
This is the free version of Shorten, which was forked from the commercial version from SoftSound. Not sure about all the legalities here, but I don’t think SoftSound is actively selling the commercial version, so this may be your only choice.
http://www.etree.org/shnutils/shorten/Compressing Web Content
Compressing Web content can produce a much faster site for users. Here’s how to set it up and measure your success.l
http://www.linuxjournal.com/article.php?sid=6802&mode=thread&order=1&thold=-1Embedded BWT Compression
Tom has posted his source code for embedded BWT compression. Basically, he’s trying to pull it off with low amounts of RAM.
http://tom.iahu.ca:8080/bwt.htmlScilab Image Processing Toolbox
SIP intends to do imaging tasks such as filtering, blurring, edge detection, thresholding, histogram manipulation, segmentation, mathematical morphology, color image processing, etc.
These operations are useful for problem solving in real-world applications ranging from car motion planning to automatic diagnosis of medical images.
Version 0.3.1 is shipping as of May, 2004.
http://siptoolbox.sourceforge.net/Michael Dipperstein’s Airthmetic Coding Page
The third in Michael’s collection of pages explaining lossless compression algorithms. A nice tutorial accompanied by ANSI C source.
http://michael.dipperstein.com/arithmetic/index.htmlread more from " Michael Dipperstein’s Airthmetic Coding Page "
FFT of waveIn audio signals
Using your Windows PC to capture audio and perform an FFT on the captured sample.
http://www.codeproject.com/audio/waveInFFT.aspNetpbm
Netpbm is a C package of routines for conversion, rendering, and
manipulation of graphics files. The program understands a wide array of image formats, and best of all, is completely free.
The 10.22 release shipped in May of 2004.
http://sourceforge.net/projects/netpbm/Monkey’s Audio
This is a lossless audio compression format that has support for WinAmp and Windows Media Player. Retain perfect fidelity for your music recordings, at the cost of additional disk space.
Version 3.99 is shipping as of May, 2004.
http://www.monkeysaudio.comFive Cents on Arithmetic Encoding
Aliaksei Sanko makes a few improvements to the code in the original 1987 CACM article. His sample includes a templated producer and consumer.
http://codeguru.com/Cpp/Cpp/algorithms/compression/article.php/c7043/Compression and Encryption Sources
Links to a variety of lossless coders, includes source for Huffman, arithmetic, LZSS, and other compressors.
http://www.larkin.lanit.ru/compress/compr.htm