Joint Bi-level Image Experts Group

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The Joint Bi-level Image Experts Group (JBIG) is a group of experts nominated by national standards bodies and major companies to work to produce standards for bi-level image coding. The 'joint' refers to its status as a committee working on both ISO and ITU-T standards. It is one of two sub-groups of ISO/IEC Joint Technical Committee 1, Subcommittee 29, Working Group 1 (ISO/IEC JTC 1/SC 29/WG 1), whose official title is Coding of still pictures.[1][2][3]

The Joint Bi-level Image Experts Group created the JBIG and JBIG2 standards.[4] The group often meets jointly with the JPEG committee, which typically meets three times annually.[5]

ISO/IEC JTC1 SC29 Working Group 1 (also known as ITU-T SG8) is responsible for both JPEG and JBIG standards.[4] It includes two sub-groups: Joint Photographic Experts Group (JPEG SG) and Joint Bi-level Image experts Group (JBIG SG).[4][1]

In the mid 1980s, both CCITT (now ITU-T) and ISO had standardization groups for image coding: CCITT Study Group (SG) VIII (Telematic Services) and ISO TC97 SC2 WG8 (Coding of Audio and Picture Information).[6] They were historically targeted on image communication. In 1986 it was decided to create the Joint (CCITT/ISO) Photographic Expert Group. In 1988 it was decided to create the Joint (CCITT/ISO) Bi-level Image Group - JBIG.[7][6]

Contents

[edit] Published Standards

JBIG have developed following standards, which were published by ISO/IEC and/or ITU-T:

Joint Photographic Experts Group - developed standards[2][8]
Common Name Part First public release date (First edition) ISO/IEC Number ITU Number Formal Title
JBIG1 1993 ISO/IEC 11544 ITU-T Recommendations T.82, T.85 Information technology -- Coded representation of picture and audio information -- Progressive bi-level image compression
JBIG2 2000 ISO/IEC 14492 ITU-T Recommendations T.88, T.89 Information technology – Lossy/lossless coding of bi-level images

Note: The published JBIG2 standard was revised by later amendments.

[edit] See also

[edit] References

  1. ^ a b ISO/IEC JTC 1/SC 29 (2009-05-07). "ISO/IEC JTC 1/SC 29/WG 1 - Coding of Still Pictures (SC 29/WG 1 Structure)". http://www.itscj.ipsj.or.jp/sc29/29w12901.htm. Retrieved 2009-11-11. 
  2. ^ a b ISO/IEC JTC 1/SC 29. "Programme of Work, (Allocated to SC 29/WG 1)". http://www.itscj.ipsj.or.jp/sc29/29w42901.htm. Retrieved 2009-11-07. 
  3. ^ ISO. "JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information". http://www.iso.org/iso/standards_development/technical_committees/list_of_iso_technical_committees/iso_technical_committee.htm?commid=45316. Retrieved 2009-11-11. 
  4. ^ a b c JPEG, JBIG (2007). "About our committee". http://www.jpeg.org/committee.html. Retrieved 2009-11-11. 
  5. ^ JPEG. "How does JPEG work?". http://www.jpeg.org/working.html. Retrieved 2009-11-09. 
  6. ^ a b chiariglione.org (2003-08-03). "Riding the Media Bits, The Faultline". http://www.chiariglione.org/ride/faultline.htm. Retrieved 2009-11-12. 
  7. ^ ITU-T (2005-07) (PDF), The First Joint ITU ISO/IEC StillImage Compression Standards, p. 3, http://www.itu.int/ITU-T/worksem/vica/docs/presentations/S4_P1_Sebestyen.pdf, retrieved 2009-11-12 
  8. ^ ISO. "JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information". http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_tc_browse.htm?commid=45316. Retrieved 2009-11-07. 

[edit] External links

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