Joint Bi-level Image Experts Group

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 (working together with ITU-T Study Group 16 - VCEG[6] and previously also with Study Group 8 - SG8[7][8][9]) is responsible for both JPEG and JBIG standards.[4] It includes two sub-groups: the Joint Photographic Experts Group (JPEG SG) and the 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).[10] 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.[11][10]

Contents

Published Standards

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

Joint Photographic Experts Group - developed standards[2][12]
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.

See also

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. ^ "ITU-T Home : Study Groups : Study Group 16 - Question 6/16 – Visual coding". http://www.itu.int/ITU-T/studygroups/com16/sg16-q6.html. Retrieved 2010-03-07. 
  7. ^ JBIG Committee (1999-07-16) (PDF), ISO/IEC JTC 1/SC 29/WG 1 (ITU-T SG8) - 14492 FCD, jpeg.org, http://www.jpeg.org/public/fcd14492.pdf, retrieved 2010-03-07 
  8. ^ ITU-T (DOC), ITU-T Study Group 8 List of Questions under Study (Study Period 1997 - 2000), http://www.itu.int/ITU-T/1997-2000/com08/questions-sg8.doc, retrieved 2010-03-07 
  9. ^ ITU-T. "ITU-T Study Group 8 (Study Period 1997-2000)". http://www.itu.int/ITU-T/1997-2000/com08/index.html. Retrieved 2010-03-07. 
  10. ^ a b chiariglione.org (2009-09-06). "Riding the Media Bits, The Faultline". http://ride.chiariglione.org/faultline.htm. Retrieved 2010-02-09. 
  11. ^ 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 
  12. ^ 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. 

External links