Hi all of you,
I am wondering how you solve or ignore 😁 this jpylyzer warning when you validate a jp2 file

<isValid format="jp2">False</isValid> <containsWellformedXML>False</containsWellformedXML> ?

Thanks in advance

#digitalpreservation #DigiPres #jp2 #jpeg2000 #validation

Pleasantly surprised an non-paywalled version of the High-throughput #JPEG2000 standard is available here:

https://www.itu.int/rec/T-REC-T.814-201906-I/en

Lots more useful info at the (always excellent) Library of Congress "Sustainability of Digital Formats" site:

https://loc.gov/preservation/digital/formats/fdd/fdd000566.shtml

Evaluating High Throughput #JPEG2000 (#HTJ2K) as a Drop-In Replacement for JPEG2000 with #IIIF (via @Thorsted):

https://journal.code4lib.org/articles/17596

#code4lib @general

Evaluating HTJ2K as a Drop-In Replacement for #JPEG2000 with #IIIF | code4lib journal https://journal.code4lib.org/articles/17596

While looking for a copy of Rob Buckley's 2010 (I think) report on #JPEG2000, I stumbled across this site:

http://jp2k-uk.wikidot.com/jp2k-report

The TinyURL link to the report now directs to an online store that sells survival gear and guns (the enormous "Kids Approved" heading is particularly freaky). #WheelOutTheDigitaDarkAgeKlaxon 📯

@BertrandCaron effectivement je me pose aussi la question mais pour le moment - après discussions - à la MMSH nous restons en #TIFF, je suis preneuse d'arguments #jpeg2000 #archivage

A la suite de la journée #bibliopat de vendredi dernier 18 novembre, je souhaitais revenir sur une question que les bibliothèques et archives se posent encore souvent : pour notre numérisation image, on demande nos fichiers de conservation en #TIFF ou en #JPEG2000 ?

@nemobis @edsu @misty @andrewjbtw What about #JPEG2000 with embedded #PDF inside? True story, once heard about this in a presentation from Robert Buckley, who was consulting on JPEG2000 for pretty much everyone who was working with JP2 around 2010. Apparently one of his clients wanted this, don't remember the details, I think the PDFs contained descriptions of the images or something.

Uh-oh, seems US Geological Survey might have a little problem with their #JPEG2000 production workflow #WheelOutTheDigitalDarkAgeKlaxon 📯 😱 https://github.com/openpreserve/jpylyzer/issues/192

@edsu @misty @andrewjbtw I feel you...

#JPEG2000 is bad, but worse is #PDF with JPEG2000 inside!
https://softwarerecs.stackexchange.com/questions/25497/floss-pdf-reader-conforming-to-iso-32000-1
https://softwarerecs.stackexchange.com/questions/25405/floss-software-to-write-pdf-a-2-with-jpeg2000-compression

#TIFF with JPEG compression might be even worse, but at least it usually won't crash your computer.
https://photo.stackexchange.com/questions/10906/which-tiff-image-compression-is-better-lzw-or-zip/69661#69661

New blog post with my first look into #jpeg2000 codecs in many years. Most surprising result is that it's now feasible to generate lossily compressed access JP2s from lossless preservation masters using open-source software https://www.bitsgalore.org/2022/03/30/generating-lossy-access-jp2s-from-lossless-preservation-masters

Coding begins today for 2020 #GSoC projects, including #Android SDK tools in #Debian, work on #VKMS & IGT GPU Tools, #Linux kernel driver debugging, #OpenXR enhancements in #Blender & even decoder improvements in #FFmpeg for #JPEG2000! Good luck to all! http://openfir.st/gsoc20 🎉

https://www.openhub.net/p/OpenJPH# #Codec : #OpenSource implementation of #JPEG2000 Part-15 (or #JPH or #HTJ2K)

One for the #jpeg2000 crowd - the action-packed official 2.0 release of jpylyzer is out now! More info here: https://jpylyzer.openpreservation.org/2019/11/20/Release-of-jpylyzer-2-0-0

We just published the jpylyzer 2 release candidate, which includes (among other things) support for raw codestream validation. More info here: https://openpreservation.org/news/jpylyzer-2-release-candidate-out-now/ #jpeg2000