Data-Compression.org

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A study of JPEG 2000 still image coding versus other standards

by Diego Santa-Cruz and Touradj Ebrahimi. This paper is to-be-published.

http://ltswww.epfl.ch/~dsanta/research/jpeg2k-study-eusipco2000

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Posted in March 7th, 2004

An analytical study of JPEG 2000 functionalities

by Diego Santa-Cruz and Touradj Ebrahimi. A paper to be published in Proc. of the IEEE International Conference on Image Processing (ICIP), September, 2000.

http://ltswww.epfl.ch/~dsanta/research/jpeg2k-func-icip2000

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Posted in March 7th, 2004

Libungif - An uncompressed GIF library

A library for reading and writing gif images. The save functionality uses an uncompressed gif algorithm to avoid the Unisys LZW patent. This library is based on Eric Raymond’s giflib and implements a superset of that library’s API.

Version 4.1.2 of this library shipped in March, 2004.

http://sourceforge.net/projects/libungif/

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Posted in March 7th, 2004

ZipScan

Published in Commercial Programs, Zip

ZipScan performs a fast file search that looks inside Zip, CAB, RAR, JAR, and ACE archive files, including self-extracting archives. The search can also check a file’s size, look for a text string, and search a file’s version resource table.

http://www.zipscan.co.uk/

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Posted in March 7th, 2004

OptimFROG SDK

Florin Ghido has packaged his lossless compressor into a nice SDK - take advantage of his great audio compression in products of your own.

http://losslessaudiocompression.com/SDK.php

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Posted in March 7th, 2004

DACT

DACT is a brute force compressor written by Roy Keene that tries out a whole library of compression routines on a given file, and then simply picks the best performer.

Release 0.8.36 was shipping in early March, 2004.

http://www.rkeene.org/oss/dact/

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Posted in March 7th, 2004

Region of Interest Coding in JPEG2000 for interactive client/server applications

A paper by Diego Santa Cruz, Touradj Ebrahimi, Mathias Larsson, Joel Askelöf and Charilaos Cristopoulos. According to the abstract, this paper discusses ways to decode regions of an image on the fly without needing to do a complete decode of the entire image.

http://ltswww.epfl.ch/~dsanta/research/interactive-roi-mmsp99

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Posted in March 7th, 2004

Short course: JPEG 2000 image coding standard

Course notes of a JPEG 2000 short course given at the International
Conference in Image Processing (ICIP). By Dr. Majid Rabbani and Diego Santa-Cruz. The course covers image coding principles, a review of JPEG and all the main elements of JPEG 2000: wavelet transform, entropy coding, bitstream structure, error resilience, functionality, performance evaluation, etc.

http://dsanta.users.ch/teaching/index.html

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Posted in March 7th, 2004

ComPacketer

The folks at Compandent have this to say about their product: Compandent’s ComPacketer is a voice coder which achieves a breakthrough in quality/bit rate/complexity tradeoff. Compandent’s novel technology, the ComPacketer that operates at 2.8 kb/s, produces speech with quality which exceeds that of ITU-T G.723.1 at 6.3 kb/s. Using the ComPacketer, only graceful degradation is […]

http://www.compandent.com/products_compacketer.htm

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Posted in March 7th, 2004

BitZipper

Published in Commercial Programs, Zip

Another Win32 archiver that can work with a zillion formats. Recent new features added to BitZipper include deflate64 support, ACE archive support, and better integration with the Windows shell.

BitZipper 4.0 shipped in February, 2004.

http://www.bitzipper.com/

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Posted in March 1st, 2004

DivX Certification Program

Published in Video

The DivX Certification Program was created in response to overwhelming consumer demand for DivX-powered video products. With the new program, DivXNetworks is enabling third parties to create “DivX Certified” products that are rigorously tested and fully compatible with the entire suite of DivX™ video technologies.

http://www.divxnetworks.com/solutions/certification/

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Posted in March 1st, 2004

ITWorx

Published in Hardware, Internet

These folks make NetCelera, a WAN compression product.

http://www.netcelera.com/

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Posted in March 1st, 2004

PKZip library for PHP

This project is still in beta. The current release provides the ability to manipulate zip archives by adding and removing files.

http://sourceforge.net/projects/phpziplib/

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Posted in March 1st, 2004

LZO.Net

A .NET wrapper around the native LZO libraries.

http://lzo-net.sourceforge.net/

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Posted in March 1st, 2004

WinZip Computing

Published in Commercial Programs, Zip

The home page for WinZip Computing, makers of WinZip. WinZip is a very popular Win32 Zip program. This page has links to an evaluation version of the program available for download, plus an FAQ, and other online support.

WinZip 9.0 shipped in February, 2004. Highlights include AES encryption and 64-bit Zip format support.

http://www.winzip.com/

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Posted in March 1st, 2004

JPEG Imager JPEG Imager

JPEG Imager is an interactive image compressor. It provides real-time preview of compressed image and handy means to compare it with original one. You can fiddle with various compression parameters and observe the effect of changes straight away. You also can specify a desired file size and let the program select the proper values automatically. […]

http://www.v-methods.com/ji/

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Posted in March 1st, 2004

CXImage

Yet another image library! This one promises to load, save, and display BMP, JPEG, GIF, PNG, MNG, and J2K compressed images.

Version 5.9 of this library shipped in February, 2004.

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

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Posted in March 1st, 2004

DynaZIP-GT

A set of Win32 libraries, DLLs, and controls that let you manipulate tar and gz format archives under Win32.
A DCL user had this to say: Worked very quickly, very reliable, absolutely worth the money, I had it running correctly in 5 minutes, mabye less. There was also more than enough sample code to work […]

http://www.innermedia.com/gt/index.htm

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Posted in March 1st, 2004

Maximum Compression

Werner Bergmans has created a new benchmark site that aims to show the best compression ratios possible for multiple file types, including English text, executables, graphics, and so on. Werner says he is running these tests with 80-100 programs for each file type!

Reader Werner B. says Useful site to compare results of different compression programs. […]

http://www.maximumcompression.com/

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Posted in February 28th, 2004

LHA History Lesson

Published in Newsgroup Posts, LHA

A few notes about the ancient history of LHA on comp.compression.

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&threadm=db85789b.0402160137.6b
4155e3%40posting.google.com

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Posted in February 22nd, 2004

Smart SFX

This tool creates SFXs for your archives, and currently has both 16- and 32-bit extractor modules. Includes advanced features such as SFX files that span multiple disks. Commercial Windows software.

Version 3.0 is shipping as of February, 2003.

http://www.ncsmartsoft.com/

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Posted in February 22nd, 2004

GermaniXEncoder

GermaniXEncoder is a universal Transcoder for various sound formats like MP3, MP2, Real Audio, WMA, Ogg Vorbis, ALF2CD, DSP, GSM, G.721, G.723, G.726, RAW, PCM, ADPCM, uLaw, aLaw, MPC, and Monkeys Audio. In addition, the Encoder has a transformer for some transforming features, an Audio Recorder for recording from all input sources to mp3, mp2, […]

http://www.germanixsoft.de/

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Posted in February 22nd, 2004

jpegrdf

This program is used to read and manipulate the RDF metadata that can be stored in JPEG images.

Version 2.0 is shipping as of February, 2004.

http://jpegrdf.sourceforge.net/

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Posted in February 22nd, 2004

The MPEG Video Standards – from 1 to 21

This article in Streamingmedia.com breaks down the family tree
of the MPEG standards, starting with MPEG-1 and working up to the
current and inscrutable MPEG-21. Written for the layman, this can
get you up to speed quick without burning up too many brain cells.

http://www.streamingmedia.com/article.asp?id=8569

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Posted in February 22nd, 2004

LZMA SDK From 7-Zip

Igor Pavlov has released his LZMA code in a separate SDK, and is claiming excellent performance characteristics that make this a potential hit in the embedded world.

http://www.7-zip.org/sdk.html

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Posted in February 22nd, 2004

MP3 to Ogg

This is a suite of programs which will help you to convert your existing mp3 files into ogg. The suite includes a text and a graphical frontend. Requires mpg321, mp3info, oggenc, vorbiscomment (zenity for gui).

http://sourceforge.net/projects/mp3toogg/

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Posted in February 22nd, 2004

QuickTime for Linux

View QuickTime movies on Linux, in a nice GPL package.

Version 2.0.2 is shipping as of February, 2004.

http://heroinewarrior.com/quicktime.php3

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Posted in February 22nd, 2004

RomSoft JPEG2000 libraries and plugins

JPEG200 products provided by RomSoft. Here you find a C++ DLL implementation of JPEG2000 Part 1 standard (ISO/IEC 15444-1) and a Photoshop plugin for JPEG2000 and J2K files

Reader Petrut D. had this to say:

One of the fastest JPEG2000 codecs out there. The Intel IPP library helped a lot with performance. I also […]

http://www.colorutilities.com/page/page/948008.htm

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Posted in February 22nd, 2004

JasPer: A Software-Based JPEG-2000 Codec Implementation

Jasper is a C-language implementation of the JPEG-2000 Part-1 standard. Michael Adams seems to run the show, with help from Image Power and a small team. This page gives you access to the software, documentation, and a nice set of links. Jasper is distributed under a free license.

Version 1.701.0 is shipping as of February, 2004.

http://www.ece.uvic.ca/~mdadams/jasper/

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Posted in February 14th, 2004

ANSI-C Bit Manipulation Libraries

Michael Dipperstein has written a few compression programs, which naturally requires that you be able to read and write bits one at a time, and possibly in chunks of other sizes. He has packaged up this capability as a separate library, and makes it available to the world here.

http://michael.dipperstein.com/bitlibs/

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Posted in February 14th, 2004