Category Archives: JPEG2000

JPEG2000 is a new image coding system that uses state-of-the-art compression techniques based on wavelet technology. Its architecture should lend itself to a wide range of uses from portable digital cameras through to advanced pre-press, medical imaging and other key sectors. (http://www.jpeg.org/jpeg2000/)

Meeting of the JPEG 2000 Interest Group on Jan 12th in Philadelphia

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Saturday, January 12th from 1:30pm to 3:30pm — j2kIG Meeting at Chestnut room in the Radisson Plaza hotel

The JPEG2000 Interest Group of LITA will be holding a business meeting to discuss plans for a program at the ALA Annual Conference in Anaheim in June. Anyone with an interest in the use of JPEG2000 in Archives and Libraries is welcome to attend the meeting, whether or not you are a member of LITA.

Agenda

  1. Finalize plans for program at ALA Annual in Anaheim
  2. Interest group renewal and solicitation for an IG chair
  3. Information sharing about projects, issues, successes/failures
This is a preview of Meeting of the JPEG 2000 Interest Group on Jan 12th in Philadelphia. Read the full post (358 words, 1 image, 1:26 minutes estimated reading time)

Xerox and Library of Congress Collaborate on JPEG2000 for Image Preservation

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Xerox and the Library of Congress announced a joint effort last week to study the use of JPEG 2000. This is welcome news! The project is “designed to help develop guidelines and best practices for digital content,” a result that will be most welcome for those of us that want to do the right thing but lack the time and/or technical expertise to pin down exactly what the right thing is. I think it is safe to say that inertia has taken us this far with our collective TIFF-based practice, and even the most conservative preservationist would probably acknowledge that the state of the art has moved in the past quarter century to a point where there might be a better way.

This is a preview of Xerox and Library of Congress Collaborate on JPEG2000 for Image Preservation. Read the full post (161 words, 39 seconds estimated reading time)

Results of JPEG2000 Activity in the Google Summer of Code 2007

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Earlier this year I posted a summary of planned JPEG2000 activity in the Google Summer of Code. As you may recall, there were two project: one mentored by the Mozilla Foundation and another by FFmpeg. This post is a summary of the results of the efforts of the GSoC students.

JPEG2000 in Firefox


Ben Karel, a Computer Science undergraduate student at the University of Delaware, and I have been having a running e-mail conversation about his efforts to bring JPEG2000 to the Firefox browser. He has given me permission to summarize our conversation here.

This is a preview of Results of JPEG2000 Activity in the Google Summer of Code 2007. Read the full post (470 words, 1:53 minutes estimated reading time)

JPEG XR Could Be Neat, but JPEG2000 is Still Neater

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On Tuesday, the Joint Photographic Expert’s Group (a.k.a. “JPEG”) announced a new work item for the standardization of Microsoft’s HD Photo as JPEG XR (XR is short for “extended range” — a reference to its improvement over the original JPEG standard). You can read the publicity details in the Microsoft press release and the JPEG press release, but beyond the public relations pieces I wonder if you are thinking about HD-Photo/JPEG-XR for digital archiving. And if you’re thinking that I’ll bet your wondering about how HD Photo compares with JPEG 2000. As with many things, the devil is in the details, so here is a first, gut-reaction pass at the details.

This is a preview of JPEG XR Could Be Neat, but JPEG2000 is Still Neater. Read the full post (995 words, 3:59 minutes estimated reading time)

Minutes of the JPEG2000 Interest Group Posted

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Minutes of the JPEG2000 Interest Group have been posted to the j2kArcLib.info website. Comments there are restricted to registered users of the site (although registration is freely available), so feel free to post comments here.

The text was modified to remove a link to http://j2karclib.info/node/113 on January 19th, 2011.

The text was modified to remove a link to http://j2karclib.info/j2kIG on January 19th, 2011.

Permanent link to this post (62 words, 15 seconds estimated reading time)

Meeting of the JPEG 2000 Interest Group on Jun 23rd in Washington, DC

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There will be a meeting of the LITA JPEG 2000 Interest Group during the annual conference of the American Library Association in Washington, DC, from June 23th from 10:30am to noon. The meeting will be held in the Congressional room in the Doubletree Washington hotel.

At the meeting we will be sharing observations and experiences with JPEG 2000 for access and preservation of still and moving pictures as well as discussing ideas for advocacy and spreading information. Membership in LITA is not required to attend the meeting. Get this meeting as an iCal file suitable for importing into most calendar programs.

This is a preview of Meeting of the JPEG 2000 Interest Group on Jun 23rd in Washington, DC. Read the full post (117 words, 1 image, 28 seconds estimated reading time)

Truly Lossless JPEG2000 Compression

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This posting used to have the tag “– Except for Grayscale?” appended to the end of the title. That is no longer needed; see the bottom of the post for an explanation. We have been implementing University of Michigan’s DLXS software, and DLXS uses JPEG2000 for its image masters. We have been investigating reports of perceived changes in images in the conversion from our old media server to DLXS, and along the way I discovered an important fact: the default parameters for two popular JPEG2000 codecs results in an irreversible transformation. Here is how to address that.

This is a preview of Truly Lossless JPEG2000 Compression. Read the full post (861 words, 3:27 minutes estimated reading time)

Following Up on Adobe Photoshop and JPEG2000

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The discussion has died down on Jack Nack’s blog posting about the future of JPEG2000 support in Photoshop. Since I last updated my own commentary on the issue, there have been a few more comments, including one by Erich Kesse from the University of Florida. Jack has added a few follow-ups to comments left on his blog, including this one at the bottom of Erich’s comment:

[Thanks for the detailed feedback. I would note that regardless of what Adobe does with JPEG 2000, other developers can create JPEG 2000 reading/writing plug-ins for the app. --J.]

This is a preview of Following Up on Adobe Photoshop and JPEG2000. Read the full post (166 words, 40 seconds estimated reading time)

JPEG2000 Activity in the Google Summer of Code

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OhioLINK is not participating in the Google Summer of Code this year (too many other things going on for our staff to be effective mentors), which is why it is refreshing to see work on the wider adoption of JPEG2000 — one of our core goals — continue on other fronts. Among this year’s 900 projects accepted by mentors are two that involve J2K. All of this is welcome news, coming in the same month that Adobe is questioning the need for JPEG2000 support in Photoshop. My public gratitude goes out to Google for their third year of offering financial and logistical support to their Summer of Code program.

This is a preview of JPEG2000 Activity in the Google Summer of Code. Read the full post (278 words, 1:07 minutes estimated reading time)

Questioning the Future of JPEG2000 Support in Photoshop

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John Nack, Senior Product Manager for Adobe Photoshop, posted a query recently to his blog seeking customer reactions to the possibility of removing JPEG2000 support from Photoshop:

Adobe developed the plug-in in anticipation of cameras entering the market with native JPEG 2000 support on board. The thing is, that hasn’t happened, nor have we seen other widespread adoption of the format in places we know Photoshop is being used. [...] As we plan for the future, we need to retire features that no longer make sense & focus instead on capabilities that matter. So, do you use JPEG 2000? If so, please give a shout and let us know how & why you use it.

This is a preview of Questioning the Future of JPEG2000 Support in Photoshop. Read the full post (589 words, 2:21 minutes estimated reading time)