Page 149 - ITU Journal, ICT Discoveries, Volume 3, No. 1, June 2020 Special issue: The future of video and immersive media

ITU Journal: ICT Discoveries, Vol. 3(1), June 2020

Fig. 3 – In 1993, approved Guide for ITU-TS and ISO/IEC JTC1 Cooperation document
(introduction page)
Table 1 shows the timeline of events, with dates and “what happened” columns. It also shows how complicated
in practice the interactions of the different groups were.
Co-operation between ITU-T SG8 and ISO/IEC JTC1 SC29 became simpler after the approval of the JPEG-1
format. However, the original JPEG committee then practically disappeared having been merged de facto into
JTC1 SC29/WG1 and ITU-T SG8. First the co-operation continued according to the ITU-T A.23 [5] joint rules
with ITU-T SG8 by means of the so-called collaborative interchange and in 1997 or so by the creation of a
collaborative team. The JPEG2000 standardization effort was done under such a regime.

However, what both ISO/IEC JTC1 and ITU-T lost was the flexible, fast and effective working of the original
JPEG with its unique procedures and working methods.

© International Telecommunication Union, 2020 127