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data compression link collection

JBIG

JBIG is a standard algorithm for lossless compression of still images. JBIG and JPEG were contemporaries, but JPIG never achieved the popularity of JPEG. It remains to be seen whether lossless JPEG2000 will succeed in popularizing a standard form of lossless image compression.


JBIG Kit

Markus Kuhn has this to say about it: I wrote the freely available JBIG-KIT 1.2 portable ANSI C library, which implements a highly effective lossless bi-level image compression algorithm based on context sensitive arithmetic coding. The JBIG algorithm (specified in ITU-T Recommendation T.82), which is implemented in this library, is especially suitable for compressing scanned documents and fax pages. You can also download the (unfortunately German) project report (Studienarbeit) that I wrote about JBIG-KIT (abstract).

Release 1.6 available as of 6/2004.

http://www.cl.cam.ac.uk/~mgk25/jbigkit/

         

Posted in June 20th, 2004

The JBIG Home Page

Home page for the members of the JBIG committee, as well as a place for links and information about the Bi-Level Image coding standard.

http://www.jbig.org/jbig/index.html

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Posted in May 15th, 2004

JBIG2DEC

A JBIG2 decoder open source project, described as being O/S independent. The alpha releases are capable of decoding some JBIG2 documents but aren’t ready for prime time yet.

Version 0.4 was released July 31, 2003.

http://sourceforge.net/projects/jbig2dec/

         

Posted in August 1st, 2003

The DICOM Standard

This page gives a short introduction to the DICOM standard, commonly used for medical imaging. It has a lengthy set of links to DICOM viewers, images, and other resources.

http://www.psyc.nott.ac.uk/staff/cr1/dicom.html

         

Posted in August 18th, 2002

Almacom JPEG-2000 library

The page says:
The Almacom JPEG-2000 library was written in an effort to produce the cleanest and simplest implementation possible of the JPEG-2000 standard. We have put a particular emphasis on good architecture design and code simplicity, while at the same time providing an implementation as complete and efficient as possible.

DataCompression.info user Luca M. said I was looking for a good library of wavelets. Now I’ve found it !

http://j2000.org/

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Posted in May 23rd, 2002

FELICS - Fast and Efficient Lossless Image Compression

P. G. Howard and J. S. Vitter. “Fast and Efficient Lossless Image Compression,” Proceedings of the 1993 IEEE Data Compression Conference (DCC ‘93), Snowbird, UT, April 1993. The abstract describes this as a lossless compression algorithm that provides results as good as JPEG in lossless mode with five times the speed.

http://www.cs.duke.edu/~jsv/Papers/catalog/node69.html

         

Posted in April 8th, 2002

Fast Progressive Lossless Image Compression

P. G. Howard and J. S. Vitter. “Fast Progressive Lossless Image Compression,” Proceedings of the 1994 IST/SPIE International Symposium on Electronic Imaging Science and Technology, San Jose, CA, February 1994. This paper describes a technique that combines the author’s previously published FELICS algorithm with the progressivity of the MLP method.

http://www.cs.duke.edu/~jsv/Papers/catalog/node70.html

         

Posted in April 8th, 2002

JBIG Standard - ITU T.82

Published in Standards, JBIG

This is the ITU page where you can purchase a copy of the JBIG specification for the modest price of 29 CFH. (You don’t really expect them to give this stuff away, do you?)

http://www.itu.int/rec/recommendation.asp?type=folders&parent=T-REC-T.82

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Posted in March 21st, 2002

JBIG files

Here you will find information and tools related to the JBIG
arithmetic lossless bi-level image compression algorithm.

This includes the JBIG kit, which is a free C lossless image compresion library that conforms to the JBIG specification.

ftp://ftp.uni-erlangen.de/pub/doc/ISO/JBIG/

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Posted in February 7th, 2002

Medical Image Format FAQ - Part 7

Lots of pointers here. Relevant to compression because of the wealth of pointers to various formats used in medical imaging, such as JPEG-LS and Lossless JPEG.

http://www.faqs.org/faqs/medical-image-faq/part7/

         

Posted in December 15th, 2001

Image Power Downloads

Image Power has their products available for download here, which includes the commercial version of PowerCompressor, and a beta copy of Jasper, a JPEG2000 codec.

http://www.imagepower.com/products/default.asp?url=downloads/default.asp

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Posted in May 13th, 2001

A JBIG-ABIC compression engine for digital document processing

A paper describing the creation of a compression engine that was later implemented in firmware.

http://www.research.ibm.com/journal/rd/426/marks.html

         

Posted in June 3rd, 2000

Performance as a function of compression

This IBM research paper looks into the performance of compressors in relation to the compressibility of the the objects they are compressing. At least I think that’s what it is talkinga bout.

http://www.research.ibm.com/journal/rd/426/kampf.html

         

Posted in June 3rd, 2000

The Qx-coder

IBM’s implementation of arithmetic coding known as the Q-coder is a well-known piece of work. (Patented, unfortunately.) This paper discusses an implementation of the Q coder in hardware.

http://www.research.ibm.com/journal/rd/426/mitchell.html

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Posted in June 3rd, 2000

Signal Processing and Multimedia Group - Univ. of British Columbia

Software for H.263, JPEG-LS, and JBIG-2. Follow the links to Software. Many publications as well.

http://spmg.ece.ubc.ca/

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Posted in December 3rd, 1999

Home site of the JPEG and JBIG committees

As it says, this is the home site of the committees. You need to be a member to access some areas, but there is plenty of information here for the common man as well.

http://www.jpeg.org/

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Posted in November 19th, 1999

Introduction to JBIG

Published in Newsgroup Posts, JBIG

The comp.compression FAQ gives you this introduction.

http://www.faqs.org/faqs/compression-faq/part2/section-5.html

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Posted in November 14th, 1999

Tak’Asic

Tak’Asic provides Lossless/Lossy still image compression/decompression ICs solution.
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Our ICs support JBIG, MH, MR, MMR and JPEG standards.
Our latest product, Tak’B3, is the world fastest JBIG codec available. It is able to process images at 133Mpixel/sec minimum and up to 2128Mpixel/sec. It also provides code conversion (MR/MR/MMR <-> JBIG) and scaling functionality.

http://www.takasic.com/

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Posted in December 30th, 1899