http://blog.gmane.org/gmane.comp.information-retrieval.j2karclib hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/80 Peter Murray 2008-08-27T23:45:13 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/73 Peter Murray 2008-06-24T14:52:01 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/72 Hi All, I think that a fast encoder will very useful for the Adoption of JPEG 2000 in Archives and Libraries, so this information should be helpful to you. We have achieved 25 frame-per-second performance for 1920x1080 resolution, 4:2:2, 8-bit video, for both lossless and lossy encoding. We used a quite-cheap PC platform, costing only around 1.6K USD (not including display device), based on Intel q6600 and Nvidia 9800 GX2. Current platform is MS Windows. However, porting to Linux is an easy task, according to your requirements. Also, the performance can be improved with upgraded configuration (e.g. 3K USD for 4:4:4 10-bit video real-time encoding). For any further cooperation ideas and questions/comments, feel free to contact us (hui.zhang-L+G57L1VLRbR7s880joybQ< at >public.gmane.org). Best Regards, Hui ZHANG Senior Research Engineer Corporate Research, Thomson, Beijing Tel:+86-10-5883 7111 Fax:+86-10-8273 0806 Zhang Hui 2008-06-10T01:01:15 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/71 Peter Murray 2008-01-09T16:09:29 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/70 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've posted a summary of the two Google Summer of Code projects related to JPEG2000. You can find it at: http://dltj.org/2007/10/j2k-in-gsoc-2007/ Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, New Service Development tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio The Disruptive Library Technology Jester http://dltj.org/ Attrib-Noncomm-Share http://creativecommons.org/licenses/by-nc-sa/2.5/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (Darwin) iD8DBQFHHPzH4+t4qSfPIHIRAtemAJsHxWUmB8YLRglXg7Udq7oyJDI9MACggJtj RyzW77DBL8JvOcBCwfjUnoI= =crr7 -----END PGP SIGNATURE----- Peter Murray 2007-10-22T19:40:54 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/69 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two topics -- First, welcome to the half-dozen or so people who attended the ALA/LITA JPEG2000 Interest Group meeting this morning and asked to be added to the j2kArcLib-L mailing list. You should have received an e-mail saying that you have been added to the list; if not, please accept this as your welcome. Second, the notes from the meeting have been posted to the j2kArcLib.info site: http://j2karclib.info/node/113 There was a great deal of interest in putting on a program at next year's ALA conference in Anaheim on use of the JPEG2000 format as an archival master. We'll be soliciting participants for the panel, but feel free to volunteer in advance of being asked! Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, New Service Development tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio The Disruptive Library Technology Jester http Peter Murray 2007-06-23T18:36:36 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/64 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I seem to have a reproducible problem with the JPEG2000 support of the recently-released Photoshop CS3. Any JPF/JPX file that I generate from a TIFF source using any parameters cannot be opened in Photoshop. The error I get from Photoshop is "the file format module cannot process the file" and an example file is located at: http://drc-dev.ohiolink.edu/temp/j2k/I_102413519.tif Source image http://drc-dev.ohiolink.edu/temp/j2k/I_102413519.kakadu.jpx Generated via Kakadu v5.2.6 by: kdu_compress -i I_102413519.tif -o I_102413519.kakadu.jpx Can anyone with Photoshop CS3 confirm the same thing? Does it also occur with Photoshop CS2? Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, New Service Development tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio The Disruptive Library Technology Jester http://dltj.org/ Attrib-Noncomm-Share Peter Murray 2007-04-27T13:05:18 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/63 Hello fellow J2KARCLIB list subscribers, Some of you may be interested in the following message sent to the UK-based Digital-Preservation mailing list, Best regards, Antony ---------------------- Antony Theobald, Technical Research Officer TASI - Technical Advisory Service for Images Free help, advice, and guidance for the Further and Higher Education sector http://www.tasi.ac.uk/ A JISC Service ---------- Forwarded Message ---------- Date: 27 April 2007 03:54 +0200 From: Carol Jackson <carol-hrMoUiDLhBXNLxjTenLetw< at >public.gmane.org> To: DIGITAL-PRESERVATION-fDUS8cNZx2jrfANEuwkQdg< at >public.gmane.org Subject: DPC/BL JPEG2000 joint workshop 25th June 2007 ***Apologies for Cross Posting*** DPC/BL JPEG200 joint workshop 25th June 2007 10.00am -- 16.30pm Introduction: The JPEG2000 image compression technique has been cited by experts as a new archiving format for digital images. It is both a preservation and delivery format, and has been seen as a possible alternative to the TIFF format which most inst Antony Theobald 2007-04-27T09:42:51 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/62 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two items of note, one discouraging and one encouraging, have happened this month with regards to the wider adoption of JPEG2000. You can read more details about each of these in blog postings at the URLs offered. First is a "feeler" from Adobe's Senior Product Manager for Adobe Photoshop on the possibility of removing JPEG2000 support from future editions of Photoshop (http://dltj.org/2007/04/j2k-in-photoshop/). Comments were initially running fairly negative, but as of late the JPEG2000 enthusiast community have been making their presence known. It probably isn't too late to register you opinion on Jack Nack's blog (http://blogs.adobe.com/jnack/2007/04/jpeg_2000_do_yo.html). Second is word from the Google Summer of Code project of two accepted proposals related to JPEG2000: one to add support for the image format in Firefox browsers and another to add support in the FFmpeg media system (http://dltj.org/2007/04/j2k-in-gsoc/). Have news of your own? Let u Peter Murray 2007-04-16T14:44:21 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/61 All, Please forgive cross-posting. We're evaluating our JPEG2000 encoding options, and are giving a closer look to JasPer because of its integration with Image Magick. Is anyone using JasPer? Please contact me off list -- I have some questions. Thanks in advance, Leslie ------------ Leslie Johnston Head, Digital Access Services University of Virginia Library http://lib.virginia.edu/digital/ http://lib.virginia.edu/digital/das/ johnston-4Ng6DfrEGID2fBVCVOL8/A< at >public.gmane.org Leslie Johnston 2007-03-26T22:20:40 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/58 Hi all, Does anyone know whether the JPEG2000 spec provides for a polygonal region or area of interest within a JPX image? Thus far, after looking *very* briefly at Part 2 of the standard, as well as using kdu_show from Kakadu, all I can see is that rectangles and ellipses are supported. I'd like to use a polygonal shape in order to provide spatial metadata utilizing a XML or UUID box for a photo album that I've digitized. Thanks, Clay Redding Clay Redding 2006-12-04T20:21:40 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/57 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 After nearly a year-long hiatus, the j2kArcLib.info website site is back online. The site is now hosted by OhioLINK. Gratitude goes to the University of Connecticut for hosting the website in the early years. The mailing list, j2karclib-l-JX7+OpRa80RDJNafbNgG6ze48wsgrGvP< at >public.gmane.org, continues to be hosted by the University of Connecticut. Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, Multimedia Systems tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio The Disruptive Library Technology Jester http://dltj.org/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFR14E4+t4qSfPIHIRAj5sAJ9jSrnU7FSg6/5Ireyvp76F82OMWACcDsZW 4JCJ7dtTLjLtrtv0opt9R6g= =Jai4 -----END PGP SIGNATURE----- Peter Murray 2006-10-31T14:30:28 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/55 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I have a conflicting conference (the Open Repositories meeting in San Antonio) right about the time of ALA Midwinter in January, so I won't be able to attend. ALA is sending out the call for for meeting space requests, so if there is to be a meeting of the JPEG2000 in Archives and Libraries interest group we'll need someone to coordinate. Meeting space requirements (date, time, anticipated attendance, room arrangement (hollow square, theater style, etc.) are due to Valerie Edmonds at ALA by September 22, 2006. Let me know if you'll be attending and are willing to moderate a meeting. Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, Multimedia Systems tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio The Disruptive Library Technology Jester http://dltj.org/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (Darwin) Comment: Using GnuPG with Mozilla - h Peter Murray 2006-09-12T20:25:32 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/54 Please forward this message and/or print-and-post as appropriate. OhioLINK Seeks Student Applications for Google Summer of Code Projects Student applications for the Google Summer of Code <http://code.google.com/soc/> program are being accepted starting on May 1st. In preparation for that date, OhioLINK has finished up its list of ideas and other supporting documentation. We welcome student applications seeking to further the development of information technology in academic libraries in Ohio and around the world. Questions about the program? Take a look at Google's participant FAQ <http://code.google.com/soc/studentfaq.html>. Questions about the suggested projects or about OhioLINK? Contact Peter Murray <mailto:peter-UnoDsp4/C3/2fBVCVOL8/A< at >public.gmane.org>. OhioLINK-generated Ideas This is the list of project ideas so far. Please take a look at the project ideas page on the DRC-Dev wiki <http://drc-dev.ohiolink.edu/wiki/ProjectIdeas> for updates. JPIP Streaming Disseminator for Fedora Peter Murray 2006-05-01T00:04:14 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/53 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 There was a problem at the host institution for the j2kArcLib.info website. A generic "we have a problem" message is displayed rather than the site content itself. University of Connecticut Libraries staff are working on restoring the site. A message will be sent to this list when the site is available again. Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, Multimedia Systems tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFENDIp4+t4qSfPIHIRAsjAAJ9fH9fsnl4mZ/lhMcyJaCWjxs/XngCfZXE4 EStUvpAcNhQKxMNgSPs6UuI= =YHMQ -----END PGP SIGNATURE----- Peter Murray 2006-04-05T21:10:01 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/51 Hello, We have a significant archive of high resolution images in a digital library on Ciprico raid arrays at our institution. We have not yet run into issues around high usage retrieval and visualization of that data but I anticipate this happening soon. I am eager to get data on JPEG2000 decompression performance on various off-the-shelf products as well as higher end customized solutions. Most importantly, I am curious if anyone has found benchmarks that compare JPEG2000 decompression performance on Opteron/AMD64 versus Intel IA64 systems. Image size information would be useful. I have heard that there is also significant variation in performance on said systems depending on choice of chipset, JPEG2000 library, operating system as well as even motherboard choice. Detailed information about things like that would be helpful to the JPEG2000 community at large as well. If you have any related info, please share, it will be greatly appreciated. -Yluj yluj svthen 2006-03-08T12:17:15 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/49 Hello--I had posted my questions below to a media archiving group and it was suggested that there might be members of this group that could offer some advice . . . ------------------------------------------------------------------------- I've been tasked with archiving portions of the tape history of what is now essentially a defunct production company in NH. We have nearly 2000 hours of video on Beta SP and 1" tape from 1985 to the late 90's. We're hoping to digitally archive only a fraction of the amount--and to do it either in-house or to outsource it. Access to archives is likely to be pretty seldom. My questions are: 1) ACCESS: First, based on the fact that access is likely to be seldom, would anyone recommend a particular archiving approach?(E.g., I'm guessing hard drive storage might not be recommended because the info doesn't have to be that easily accessible.) 2) CODEC: JPEG-2000 strikes me as an interesting solution--and I can see from the postings that there is limited but growing te Eric Fedus 2006-01-17T19:11:05 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/48 As a follow-on to last summer's gathering of video archivists and technologists here at the National Library of Medicine, I have been considering ways to encourage lossless video encoding for preservation, with a particular interest in JPEG 2000 frame encodings. Towards that end, and following a suggestion by Ron Murray at the Library of Congress about MPEG-A as an attractive vehicle for cross-cutting standards, I've drafted a "strawman" set of documents for the community's consideration, which may be found at http://archive.nlm.nih.gov/VideoArchivists2005/follow-on.html. You will find there two short introductory web pages, that present the thrust of this effort, and a download of four strawman Word documents. I would encourage you to look over this material, to see if there are aspects of importance to you, which you might help to refine, extend, or redirect. For the endeavor to be ultimately successful, some organizations will need to commit support for selected aspects or the whole. If interested i Peter Murray 2006-01-14T00:23:16 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/44 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Someone is e-mailing me privately seeking example JPEG2000 image files (JP2 and JPX, possibly JPM), particularly those that are could test boundary cases in the decoding algorithm. If you have such images that you could share publicly, please send them to j2kArcLib-L-JX7+OpRa80RDJNafbNgG6ze48wsgrGvP< at >public.gmane.org for all to share. If you have images that are not openly distributable but could be distributed to individuals under the right conditions, please let me know and I'll try to play the role of match-maker. Peter - -- Peter Murray http://www.pandc.org/peter/work/ Assistant Director, Multimedia Systems tel:+1-614-728-3600;ext=338 OhioLINK: the Ohio Library and Information Network Columbus, Ohio -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFDe0PY4+t4qSfPIHIRAkq5AKCr5SyVKn7xEOtMiCTIQj8SC48mCACgyeVH Iud0Azxe+qm0AzTGOXANKQs= =j+df -----END PGP S Peter Murray 2005-11-16T14:36:08 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/38 Hello, fellow j2karclib subscribers: If anyone has first-hand news of museum projects that are using JPEG 2000, whether for actual delivery or in digital repositories under construction behind the scenes, I'd be grateful to know. If you're involved in such work and have a moment to describe it briefly, please drop me a line offlist. This would be for possible mention in a panel on JPEG 2000 implementation in museums. Along with noting allied work in archives and libraries, I'm hoping to offer a broad sense of how museums are now using this standard. I also hope that we may lure a few library and/or archives people to the session, to be held in Boston on November 3 at MCN 2005, the conference of the Museum Computer Network. It would be great to get some live discussion going about similar sorts of work across our three professional communities and types of repositories. For more information about this and other MCN sessions, please see http://www.mcn.edu/Mcn2005/mcn2005sessions.htm . best to Rob Lancefield 2005-09-13T19:26:20 http://comments.gmane.org/gmane.comp.information-retrieval.j2karclib/37 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 An August 1, 2005 invitational meeting gathered about fifty archivists and technologists involved in the long term preservation of videos and films. The meeting, "Getting to Disk-based Lossless Digital Video Compression", was hosted by the U.S. National Library of Medicine, itself much involved in moving image preservation. Participants considered the potential of lossless, on-disk video storage in light of the "twilight of tape" as a cost-effective storage media. Other speakers reviewed current video metadata standards, and recent work in automatic extraction of metadata from video. The meeting included the first public demonstration of real-time, full-screen, mathematically-lossless video compression and decompression based on the Motion JPEG 2000 (MJ2) standard. The meeting's website is http://archive.nlm.nih.gov/VideoArchivists2005/ You can also see the press releases on j2kArcLib.info: http://j2karclib.info/weblink/76 Peter - -- Peter Murray Peter Murray 2005-09-11T02:03:08 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.information-retrieval.j2karclib