[Metadatalibrarians] Image technical metadata

[Allegra Gonzalez]

I was looking at this document this morning and thought it might be of interest to this discussion.

http://www.metadataworkinggroup.com/pdf/mwg_guidance.pdf 

This document, "Guidelines For Handling Image Metadata", is designed to help guide developers by providing best practices on how to create, read and modify metadata within digital images. It's also designed to motivate the owners of metadata standards and formats to think about preservation, interoperability, and compatibility in general terms. Based on a 2006 proposal by Microsoft, the Metadata Working Group (MWG) organization was created in 2007 by 5 founding members: Apple, Adobe, Canon, Microsoft and Nokia. Sony joined this initiative in 2008. The goals are: *Preservation and seamless interoperability of digital image metadata. *Interoperability and availability to all applications, devices, and services.

Allegra Gonzalez              
Metadata Librarian
Claremont Colleges Digital Library
Claremont University Consortium
 (909) 607-0893
http://ccdl.libraries.claremont.edu 

-----Original Message-----
From: metadatalibrarians-bounces at lists.monarchos.com [mailto:metadatalibrarians-bounces at lists.monarchos.com] On Behalf Of Waibel,Guenter
Sent: Friday, September 26, 2008 8:42 AM
To: A listserv for Metadata Librarians
Subject: Re: [Metadatalibrarians] Image technical metadata

Melanie, as part of the Automatic Exposure project, we did some extensive mapping work between NISOZ39.87 and related standards, including TIFF, EXIF and JPEG 2000. We also compiled statistics about how many elements actually map between these different standards. The spreadsheet I have attached was created in the summer of 2006, and it should reflect what was ratified as Z39.87, but you may want to double check to make sure - it's been a long time since I've looked at this.

For those who can't remember Automatic Exposure, the objective of the initiative was to capture standard technical metadata about digital images automatically, as part of image creation. The goals were to minimize the cost of acquiring this information and maximize its availability for preserving and maintaining access to images. (also see the RLG DigiNews article at http://tinyurl.com/3s7dwm)

While we've received a lot of positive feedback on the initiative, in the end we weren't successful in lobbying with camera manufacturers to incorporate NISO Z39.87 output into their products. We also started experimenting with Adobe XMP as a way to capture and store metadata, but ultimately found the technology not well suited to the task. I've heard anecdotally of other folks trying to create XMP panels for NISO Z39.87, but I've never heard from anybody who succeeded.

I hope the spreadsheet is useful!
Günter

***

Günter Waibel
RLG Programs, OCLC
voice: +1-650-287-2144
Günter blogs at ... http://www.hangingtogether.org

 
 
-----Original Message-----
From: metadatalibrarians-bounces at lists.monarchos.com [mailto:metadatalibrarians-bounces at lists.monarchos.com] On Behalf Of Melanie Schlosser
Sent: Friday, September 26, 2008 7:07 AM
To: A listserv for Metadata Librarians
Cc: Amy McCrory; Beth Black
Subject: [Metadatalibrarians] Image technical metadata

I have a couple of questions related to the ANSI/NISO Z39.87 standard for image technical metadata:

1. Is anyone out there using all of the mandatory elements from the standard in their technical metadata practice? If so, how are you capturing and storing the information?
2. Has anyone performed a detailed mapping between the elements from the standard and the tags in the TIFF Header? We've stcapturing standard technical metadata about digital images automatically, as part of image creation. The goals were to minimize the cost of acquiring this information and maximize its availability for preserving and maintaining access to images.arted one here, but it's a big job, and I wanted to make sure we weren't duplicating effort before we got too deep into it.

Thanks!
Melanie

--
Melanie Schlosser
Metadata Librarian
Scholarly Resources Integration
The Ohio State University Libraries
614-688-5877
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