Bug 688699 - JPEG2000ASCImageDict is not implemented.
Summary: JPEG2000ASCImageDict is not implemented.
Status: RESOLVED WONTFIX
Alias: None
Product: Ghostscript
Classification: Unclassified
Component: PDF Writer (show other bugs)
Version: master
Hardware: PC Windows XP
: P4 normal
Assignee: Ken Sharp
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-05-16 00:12 UTC by leonardo
Modified: 2021-06-05 07:21 UTC (History)
5 users (show)

See Also:
Customer:
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Description leonardo 2006-05-16 00:12:35 UTC
JPEG2000ASCImageDict is documented in distiller parameters 7.0. To implement it 
we need TileWidth and TileHeight in the encoding filter interface.

Ralph, please pass the bug to me after improving the filter interface.
Comment 1 Henry Stiles 2011-05-12 04:44:21 UTC
Reassigning to owner, probably a low priority issue.
Comment 2 Shailesh Mistry 2011-07-18 21:42:08 UTC
Bug still reproducible in Ghostscript 9.03
Comment 3 Ken Sharp 2012-02-07 14:14:09 UTC
The actual parameter is JPEG2000ColorASCImageDict. This used to control the creation of JPEG2000 compressed colour images. As far as I'm aware the JPEG2000 compression method is the subject of a number of patents. While royalty-free licences are granted for *de*coders, the *en*coder cannot be created without paying licence fees.

We do not implement JPEG2000 in the free release of pdfwrite. The commercial release, which uses the Luratech JPEG2000 codec does allow for this. 

However, given that no commercial customer has asked for this, and the encoder interface is still lacking the TileWidth and TileHeight, I'm closing this as 'wontfix'. If a customer ever asks for it we can do it then.