Hi John, > On 30.03.2016, at 03:16, John Hewson <[email protected]> wrote: > > PDF/A is for archiving, and while PDF/A-2 does support JPEG 2000, it's not a > good choice for an archival format, because most JPEG 2000 implementations > are broken in some way and many PDF viewers cannot correctly view such files. > It was essentially a failure as a file format and will be deprecated in PDF > 2.0. If the goal of archiving with PDF/A is to produce reliable files, JPEG > 2000 conflicts with that goal.
as a matter of fact JPEG2000 is neither deprecated in PDF 2.0 nor has it been considered for deprecation in the PDF 2.0 working group (WG 8 at ISO TC 171 SC 2). In terms of perceived usefulness (and suitability for archival purposes) of of JPEG2000, I have to say that my impression is that JPEG2000 has strong followers at least in some archival communities. While implementing a good JPEG2000 compressor can be quite an engineering challenge and CPU intensive, decompressing JPEG2000 is not overly complex (and archivists' main concern should be decompression). Olaf --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
