Archives
Xceed Zip for .NET
A true native Microsoft.NET Zip file-handling and streaming compression class library. Its true object-oriented design makes manipulating zip files as easy as manipulating regular files and folders. Written entirely in managed C#, it includes a variety of
VB.NET and C# samples and takes full advantage of the .NET runtime’s capabilities.
Xceed Zip Compression Library
A feature-rich COM/ActiveX and DLL component for adding Zip and Unzip to your Windows apps with minimum effort. Includes full documentation with many samples and examples for VB, VC++, Delphi and C++Builder to get you started quickly. Supports the latest
zip file format updates including Deflate64 compression and Zip64 headers. Also includes BZip2 compression which is […]
Xceed Zip Self-Extractor Module
This is an optional add-on for the Xceed Zip Compression Library ActiveX/DLL that lets your applications create sharp-looking self-extracting Zip files (.EXE’s) about as powerful as some install programs.
http://www.xceedsoft.com/products/SXMod/Absolute Packager from Xceed Software Inc
Easily create sharp-looking, feature-rich Self-Extracting (.EXE) Zip files with this handy desktop application. Lets you quickly select a group of files to zip up and put into a .EXE file. Even supports being able to split the .EXEs across multiple floppy disks.
http://www.xceedsoft.com/html/ap_intro.htmlread more from " Absolute Packager from Xceed Software Inc "
Xceed Software, Inc.
Makers of high-quality, commercial-grade data compression, encryption and internet components for Windows developers.
http://www.xceedsoft.comError Modeling for Hierarchical Lossless Image Compression
by P.G> Howard and J.S. Vitter. This paper from DCC ‘92 describes an improved method for error modeling in hierarchical lossless image compression.
http://www.cs.duke.edu/~jsv/Papers/catalog/node65.htmlread more from " Error Modeling for Hierarchical Lossless Image Compression "
Parallel Lossless Image Compression Using Huffman and Arithmetic Coding
by P. G. Howard and J. S. Vitter. This paper shows how images can be encoded and decoded using parallel processing. Both Huffman and arithmetic coding are examined.
http://www.cs.duke.edu/~jsv/Papers/catalog/node66.htmlread more from " Parallel Lossless Image Compression Using Huffman and Arithmetic Coding "
Explicit Bit Minimization for Motion-Compensated Video Coding
by D. T. Hoang, P. M. Long, and J. S. Vitter. This paper from DCC ‘94 looks at different methods for selecting motion vectors in low bit-rate video encoders.
http://www.cs.duke.edu/~jsv/Papers/catalog/node72.htmlread more from " Explicit Bit Minimization for Motion-Compensated Video Coding "
Text Compression via Alphabet Re-representation
by P. M. Long, A. I. Natsev, and J. S. Vitter, from DCC ‘97.
http://www.cs.duke.edu/~jsv/Papers/catalog/node77.htmlread more from " Text Compression via Alphabet Re-representation "
ViCAM®-III Digital Imaging Engine
Vista Imaging makes this chip, designed to do the image processing needed for several different types of digital cameras. Among many other features, it has a JPEG compression engine.
http://www.vistaimaging.com/vicam3.htmXML optimization
An article by Stephane Rodriguez on the CodeProject web site. Stephane describes his article as Revealing XML best practices with a utility tool and a framework. Yes, that means there is some sample code here as well.
http://www.codeproject.com/soap/betterxml.aspLossless Compression Algorithms (Entropy Encoding)
An overview of the basics, including Shannon-Fano, Huffman, Arithmetic coding, and a section on LZW for good measure.
http://www.cs.cf.ac.uk/Dave/Multimedia/node207.htmlread more from " Lossless Compression Algorithms (Entropy Encoding) "
Delphi Programming - Backup and Data Compression
The About.com guide to Delphi Programming has a section on Data Compression and Backup software that looks pretty useful. About.com is a search engine and link site that features pages edited and maintained by real live humans.
http://delphi.about.com/cs/vclcompression/read more from " Delphi Programming - Backup and Data Compression "
Jazz interface for the JAR file compressor
The folks at Dark Horse Industries like Robert Jung’s JAR compressor. So much so that they created a graphical front end for it. Get it here.
http://darkhorseindustries.com/jazz.htmlread more from " Jazz interface for the JAR file compressor "
Eduard Kriegler’s EZW Encoder
Eduard has a Java implemention of a Daubechie-4 Lifting Wavelet Transform followed by an EZW encoder with an Adaptive Huffman Encoder output stage. You can download the Java source from this page and give it a go.
http://esl.ee.sun.ac.za/~kriegler/index.htmladdZIP Compression Libraries
The home page for addZip, a shareware Zip library. Libraries and controls available for 16 and 32 bit versions of MS-DOS and Windows, with support for various compilers. This is a commercial product, but an evaluation version of the library is available.One DataCompression.info user complained that the support from the supplier is poor. Another […]
http://www.littlebigware.com/addzip.htmlSelective Extension Coding
Graham Fyffe proposes an alternative type of variable length coding that he claims will offer improved efficiency. Full description, no implementation.
http://www.geocities.com/g_fyffe/selext.htmFyffe Codes for Fast Codelength Approximation
Graham Fyffe proposes a variable length integer code that he says is easier to compute than Huffman codes.
http://www.geocities.com/g_fyffe/fastselext.htmread more from " Fyffe Codes for Fast Codelength Approximation "
Improving the Speed of LZ77 Compression by Hashing and Suffix Sorting
by Kunihiko Sadakane, Hiroshi Imai. This paper proposes two new methods of performing fast string matching in LZ77 compression. One method uses a new hashing algorithm, the other uses suffix sorting.
http://citeseer.nj.nec.com/sadakane00improving.htmlread more from " Improving the Speed of LZ77 Compression by Hashing and Suffix Sorting "
The Golomb/Rice Image Compression Web Page
A senior project whose goal was to design a hardware compressor for continuous tone images. Contains a description of the algorithm, Matlab implementations, chip designs, and more.
http://www.ece.utep.edu/research/webspc/wwwdocs/teams/golombriceimag/welcome_to_the_golomb.htmread more from " The Golomb/Rice Image Compression Web Page "
Pegasus ELS Sample Code
Pegasus has a patented range coder that they license at no charge. This archive contains some C code that provides a sample implementation.
ftp://www.jpg.com/Osaugels.zipCompressors Comparison Test WIN | KOI | LAT Compressors Comparison Test Compressors Comparison Test
Yoockin Vadim has a page here with ratings of 10 popular lossless compressors.
http://compression.graphicon.ru/ybs/best.htmYBS (blocksorting compressor)
YBS is a high-performance archiver based on Burrows-Wheeler Transform and distance coding modelling. It’s quite fast even on skew data and achives high compression ratio. Versions are posted here for DOS and Win32. It appears that the last update was in 2000.
http://compression.graphicon.ru/ybs/#YBSWIS Technologies announces PC Video chip
EE Times carries this announcement of a new PC video encoder chip from WIS Technologies. The chip is designed to do the heavy lifting that is real trouble for a host CPU, by taking care of things like DCTs and motion estimation. It relies on that same host CPU to do format conversion and other […]
http://www.eet.com/semi/news/OEG20020626S0029Advanced MP3 Converter
This conversion tool will convert between several audio formats, including WAV, OGG, and MP3. Supports ID3V1 and V2, plus other goodies.
http://www.mp3do.com/mp3converter.htmlAM-Zip
Lots of folks (including me) perform system backups into Zip archives. Over the years I became leery of proprietary formats used by various manufacturers of tape drives, removable disks, etc. Zip files give me a much better feeling, and make it a lot easier to browse through my backups. Martin Aignesberger must feel the same […]
http://aignes.com/zip.htmCodecs 101 for Microsoft Windows Media Technologies
This article from Microsoft’s Knowledge Base talks about the role of the codec in Microsoft’s Media Technologies.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/codecs.aspread more from " Codecs 101 for Microsoft Windows Media Technologies "
MPEG-4 encoding on a cell phone?
This article describes a proof-of-concept app running on a Nokia 7650 that performs MPEG-4 encoding and decoding, creating a portable video phone. No word on how you can get the code, or how difficult it would be to port this Symbios OS product to other platforms. Still, the company that developed the product, Hantro […]
http://www.infosync.no/show.php?id=2016Chinese JPEG2000 business on runway
This article in EE Times describes an effort to steer the Chinese
digital camera business onto the JPEG-2000 road. The goal is to create a chip that can be inserted into cameras for less than $10.
The supplier of the algorithm used in the chip is WIS Technologies.
ZipRecovery
ZipRecovery purports to be able to repair your corrupted Zip files. They don’t talk too much about the details on the site, but they offer a demo program, so you can get an evaluation without actually buying a copy.
Version 1.5 is shipping as of October, 2003.
http://www.officerecovery.com/zip/?submit
