Information technology —
Computer graphics and image processing —
SEDRIS —
Part 2: Abstract transmittal
This part of ISO/IEC 18023 specifies the abstract syntax of a SEDRIS transmittal. Actual encodings (EXAMPLE binary encoding) are specified in other parts of ISO/IEC 18023.
http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ISO_IEC_18023-2_Ed1.html