File format technology in JPEG 2000 enables flexible use of still and motion sequences

JPEG ‐ Still Image Compression Standard

“…The file name extension "jp2" is to be used to identify files containing data in the JP2 file format. For more information on the file format, the reader is referred to [45].…”

A JPEG 2000 compound image file reader/writer and interactive viewer

“…Part 2 specifies extensions to JPEG 2000, including JPX, an extended version of JP2 that allows non-contiguous or fragmented codestreams and simple animation. Part 3 specifies MJ2 or Motion JPEG 2000, which contains a timed sequence of JPEG 2000 images [6]. Part 6 specifies JPM, a multi-layer format for compound image files [7,8].…”

“…While the preferred compression method for Image objects in a JPM file is JPEG 2000, there is no requirement that a JPM file exclusively contain JPEG 2000 codestreams. The compression type of the object data is given by the C field in the Image Header box of the JP2 Header box [6]. Image objects can use either JPEG 2000 or JPEG, although the progressive refinement enabled by JPEG 2000 is not possible with JPEG data.…”

“…Other optional boxes in a JP2 file could contain XML-encoded metadata and vendor-specific information. For a more detailed description of JP2 and the JPEG 2000 file format family architecture, see[5,6].Part 6 of the JPEG 2000 standard specifies the JPM compound image file format [8]; JPM stands for JPEG 2000 Multi-Layer. It was formally approved as an international standard in April 2003 and will be published as lSO/IEC 1 5444-6.…”