LISTSERV mailing list manager LISTSERV 16.0

Help for CHRONAM-USERS Archives


CHRONAM-USERS Archives

CHRONAM-USERS Archives


[email protected]


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Proportional Font

LISTSERV Archives

LISTSERV Archives

CHRONAM-USERS Home

CHRONAM-USERS Home

CHRONAM-USERS  July 2013

CHRONAM-USERS July 2013

Subject:

Re: JPEG 2000 Library and Alternatives?

From:

"Brunton, David" <[log in to unmask]>

Reply-To:

Data, API, website, and code of the Chronicling America website" <[log in to unmask]>

Date:

Wed, 17 Jul 2013 09:04:32 -0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (66 lines)

Hi Stephanie,

I don't know if anyone else has made one available- there was talk of it at the last NDNP meeting, but I haven't heard anything on (or off) the list.  However, for evaluation purposes, could you simply install the software with the built in TIFF support?  It's significantly slower from the huge TIFF files, but it has the full functionality.

My recollection was that Oregon (http://oregonnews.uoregon.edu/) had done some work to get this working with JPEGs already- would it be possible for someone from there to weigh in on the level of effort involved?  How about some of the other folks on the list who have deployed in production?

Best,
David.

From: Data, API, website, and code of the Chronicling America website [mailto:[log in to unmask]] On Behalf Of Williams, Stephanie
Sent: Wednesday, July 17, 2013 8:53 AM
To: [log in to unmask]
Subject: Re: JPEG 2000 Library and Alternatives?

Thanks very much for all of the swift responses. This is really helpful.  

It's encouraging to know that others have had success adapting the software to use other image types/libraries, and that's something we'd definitely be interested in down the line. The sticking point right now is that we were hoping to evaluate the software for some specific needs before we devoted a huge amount of development/administration time to it.  Changing the image type/library at least *sounds* like it would require a significant amount of development and troubleshooting; am I wrong about that? 

I remember some discussions from awhile back about the possibility of an Amazon Machine Image becoming available again; does anyone have any news about that?  Otherwise, it sounds like our options for evaluating the software will require either 1) purchasing a license from Aware or 2) committing to some custom development work.  

Thank you again!

Stephanie Williams
North Carolina Digital Heritage Center
http://www.digitalnc.org

P.S. - Has anyone had any success contacting Aware re: an SDK license? We've both called and emailed and haven't heard anything in about a week. 


________________________________________
From: Data, API, website, and code of the Chronicling America website [[log in to unmask]] on behalf of Summers, Ed [[log in to unmask]]
Sent: Thursday, July 11, 2013 8:50 AM
To: [log in to unmask]
Subject: Re: JPEG 2000 Library and Alternatives?
Hi Stephanie,
 
We do have a license to the Aware SDK, and it's what we use in production at chroniclingamerica.loc.gov. I personally think that releasing chronam as opensource with the proprietary dependency is somewhat problematic.
 
Mark Phillips led a session at the code4lib 2012 NDNP pre-conference, where we did some user testing to see whether there was any noticeable difference when generating thumbnails and image tiles from a JPEG derivative of the TIFF compared to the equivalent generated from the JP2. We couldn't notice any difference at all, even when zoomed in all the way on a newspaper page. The obvious advantage is that the JPG takes up significantly less space (both on disk and in memory) than the TIFF, and it is usable by opensource image libraries like PIL [1] which chronam is already using.
 
So, in theory, I think we could re-work the batch loader so that it converts the TIFF to a JPG. This would mean you could keep your batches on spinning disk using 6-7 times less storage. Since they are smaller the files also will read in faster than the TIFF, and decrease the memory footprint of the webapp.  Is this something that would be of value? I seem to remember Karen Estlund and Duncan Barth (University Oregon) and Luis Baquera (UC Riverside) were interested in this option at the pre-conference--but I don't know if they are still interested. I think it should be possible to keep the batch loader working the way it currently does (using the JP2 if present, or the TIFF) unless a --convert-to-jpeg option is given.
 
Does this sound like something worth pursuing?
//Ed
 
[1] http://pythonware.com/products/pil/
 
From: Data, API, website, and code of the Chronicling America website [mailto:[log in to unmask]] On Behalf Of Williams, Stephanie
Sent: Wednesday, July 10, 2013 5:24 PM
To: [log in to unmask]
Subject: JPEG 2000 Library and Alternatives?
 
Hello! 
 
We have just begun our attempts to install/use Chronam and have a question about the JPEG 2000 image handler. It looks like the software is dependent on Aware's JPEG 2000 library/SDK.
 
Does LC have a license to allow the use of the SDK?  Is everyone else going this route?  (We've requested information about using it, but if it's costly we're interested in trying to make this work in an open source way--even if that means serving a different type of image). 
 
Thanks very much!
 
Stephanie Williams
North Carolina Digital Heritage Center
http://digitalnc.org
 
 

Top of Message | Previous Page | Permalink

Advanced Options


Options

Log In

Log In

Get Password

Get Password


Search Archives

Search Archives


Subscribe or Unsubscribe

Subscribe or Unsubscribe


Archives

March 2024
November 2023
July 2023
February 2023
December 2022
June 2022
March 2022
September 2021
August 2020
April 2020
February 2020
July 2019
June 2019
April 2019
March 2019
February 2019
October 2018
August 2018
July 2018
June 2018
May 2018
March 2018
February 2018
January 2018
December 2017
November 2017
October 2017
September 2017
August 2017
July 2017
May 2017
March 2017
February 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
May 2015
March 2015
January 2015
November 2014
October 2014
September 2014
June 2014
May 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
February 2013

ATOM RSS1 RSS2



LISTSERV.LOC.GOV

CataList Email List Search Powered by the LISTSERV Email List Manager