Hi Kris,
Many thanks for sharing your experience. We are in a similar place as your
institution and are intending on using JPEG2000 with IIPImage streaming
server. We have limited our use of j2k to just image streaming alone and not
preservation (yet), like you we intend on keeping TIFF for preservation. The
alternative to using JPEG2000 for streaming is pyramidal TIFF's, however
until issues with large TIFF processing is resolved in open source
libraries, we are constrained to using proprietary providers for conversion
from TIFF.
I been in touch with Kakadu about our service requirements and they have
suggested we try their new public service license, which requires an annual
fee and other update fees. We intend to purchase the non-commercial license
initially for evaluation. Which license are you using with Kakadu?
We are happy to share our experience with future conversions.
Regards,
Nigel
From: On Behalf Of Kris Bulman
Sent: 16 November 2010 19:04
To: nigel.tho...@york.ac.uk
Cc: Donald Moses
Subject: Re: [fcrepo-user] JPEG2000 image format generation
Hi Nigel,
The top 3 are indeed Jasper, OpenJPEG & Kakadu. We have not found any other
tool that meets the requirements.
We've only had great lossless conversion results with large uncompressed
tiffs using Kakadu with the information documented by Klokan at
http://help.oldmapsonline.org/jpeg2000 We too are concerned with Kakadu
licensing constraints, and for now, are holding on to our source tiffs. The
jp2 generated by kakadu, however, is reversable to the original uncompressed
tiff and we have yet to run into a use case where the licensing will cause
an issue.
Our hope is to switch to OpenJPEG when it becomes stable enough, but I am
afraid we are no further ahead then you are in regards to testing. Passing
on any further information you have on future testing would be appreciated,
I will do the same.
Kris
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