Update on jpylyzer
By johan on 23 April 2012 - 10:53amIn this blog post I will give a brief update of the latest jpylyzer developments. Jpylyzer is a validation and feature extraction tool for the JP2 (JPEG 2000 Part 1) still image format.
A community hub for digital preservation
Preservation Risks
OPF Hackathon - A Practical Approach to Preservation Systems
By becky on 19 April 2012 - 10:09am
The agenda can be seen at: http://wiki.opf-labs.org/display/KB/Agenda+-+OPF+Hackathon+-+A+Practical+Approach+to+Preservation+Systems
Registration opening soon...
Date:
21 May 2012 to 22 May 2012
Location:
CINES
950 Rue de Saint-Priest
Montpellier 34000
France
Preservation Topics:
Event Types:
Update: Digital Archaeology and Forensics
By Dirk von Suchodoletz on 14 March 2012 - 9:53pmBeginning of this year we reported on first results of a joint Archives New Zealand and University of Freiburg data recovery project of a set of 5.25 inch floppy disks from the early 1990s. After recovering the raw bitstreams from the floppy disks with a special hardware device the resulting image files were sent over to Freiburg for further analysis.
Automated Watch Design
By lfaria on 3 February 2012 - 2:52pmMonitoring the environment is an essential task of the adaptability of a system and is very important for digital preservation. The SCAPE Automatic Watch Component will do just that, and the design of the component architecture has just been released at:
Jpylyzer documentation
By johan on 10 January 2012 - 5:07pmThis will be my shortest blog post ever. Following up on my previous blog post on a prototype JP2 validator and properties extractor (jpylyzer), there is now a comprehensive User Manual of the tool. Just follow the link below and get the PDF file that is listed under 'Download Packages':
A prototype JP2 validator and properties extractor
By johan on 14 December 2011 - 12:30pmA few months ago I wrote a blog post on a simple JP2 file structure checker. This led to some interesting online discussions on JP2 validation. Some people asked me about the feasibility of expanding the tool to a full-fledged JP2 validator. Despite some initial reservations, I eventually decided to dedicate a couple of weeks to writing a rough prototype.
Project to Identify files with linked dependencies
By ecochrane on 21 November 2011 - 4:23amMany office suites and other applications allow the embedding of information in them via a link to another file. The use of linked spreadsheets is common amonst data intensive agencies and large documents are often managed through linking multiple office documents to form a single final product.
Future Perfect 2012
By ecochrane on 9 November 2011 - 8:32pm
The draft programme for Future Perfect 2012 is now available online!
The theme of Future Perfect 2012 - Digital Preservation by Design - seeks to stimulate discussion about how, when and why influencing the design of systems can support digital preservation and ultimately ensure that today’s information is available tomorrow. Future Perfect 2012 will be a two day conference featuring many exciting international speakers.
Our audience will hear presentations from:
Date:
26 March 2012 to 27 March 2012
Location:
Museum of New Zealand Te Papa Tongarewa
Wellington
New Zealand
Preservation Topics:
Event Types:
A simple JP2 file structure checker
By johan on 1 September 2011 - 8:47amOver the last few weeks I've been working on the design of a workflow that the KB is planning to use for the migration of a collection of (mostly old) TIFF images to JP2. One major risk of such a migration is that hardware failures during the migration process may result in corrupted images. For instance, one could imagine a brief network or power interruption that occurs while an image is being written to disk. In that case data may be missing from the written file.
Paper on JPEG 2000 for preservation
By johan on 6 June 2011 - 10:11amThe JPEG 2000 compression standard is steadily becoming more and more popular in the archival community. Several large (national) libraries are now using the JP2 format (which corresponds to Part 1 of the standard) as the master format in mass digitisation projects. However, some aspects of the JP2 file format are defined in ways that are open to multiple interpretations.