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All subjects Access Analysis Android apache tika ApacheTika AQuA ARC ARC to WARC archives archiving audiovisual Benchmark benchmarking best practice best practices Bit rot bitcurator board game British Library Characterisation Community compression Corpora CSV-Validator curation Database Database Archiving Database Preservation Delivery Digital Forensics digital preservation digitisation Disk Images DROID E-ARK Project EaaS Education Emulation epub Experimentation extensible Fido File Formats FLAC Flashback floppy disk floppy disks floppy drive Format Identification Format Registry GitHub Hackathon Hardware obsolescence help httpreserve Identification IDPD17 IMPACT Internet Standards iPRES. community survey isolyzer jhove job JP2 JPEG2000 jpylyzer LZW magnetic media Matchbox MediaConch Members Metadata metadate Migration Monitoring Normalisation OCR open Open Planets Foundation Open Preservation Foundation Open source OPF diary Optimization Packaging PDF PDF/A Planets policy PREFORMA PREMIS preservation Preservation Actions preservation planning Preservation Risks Preservation Strategies Preservia Process Projects PRONOM Provenance pywb recordkeeping records Representation Information Research data research infrastructure Resources RFC Rogues Gallery Rosetta Roy SCAPE Server Siegfried Signature Development Software Software benchmarking SPARQL specification spreadsheets SPRUCE standards technical technical registry testing TIFF Tika Tools training validation veraPDF Virtual Machines w3c WARC Watch WAV WAVE Web Archiving Web Publications wget Wikidata Workflow Workflows Zip

An important part of image file format migration is quality assurance.  Various tools can be used such as ImageMagick or Matchbox, but they only provide one metric or are for different use-cases.  I wanted to investigate implementation of image comparison algorithms so began investigating. I created a prototype tool/library for image quality analysis, called Dissimilar.  […]

By willp-bl, posted in willp-bl's Blog

17th Jul 2013  12:50 PM  25579 Reads  4 Comments

It’s been more than two years now since I wrote my D-Lib paper JPEG 2000 for Long-term Preservation: JP2 as a Preservation Format. From time to time people ask me about the status of the issues that are mentioned in that paper, so here’s a long overdue update. Issues addressed in the 2011 paper The […]

By johan, posted in johan's Blog

1st Jul 2013  4:44 PM  20247 Reads  2 Comments

Following the community response to our workshop last year, we want to invite you again to contribute your future preservation challenge! Digital Preservation has emerged as a key challenge for information systems in almost any domain from eCommerce and eGovernment to finance, health, and personal life. The field is increasingly recognized and has taken major […]

By cbecker, posted in cbecker's Blog

17th Jun 2013  5:24 PM  14911 Reads  2 Comments

  "Digital preservation is more than the technical preservation of a file … it is also about providing readers with the context surrounding it to promote authenticity."   Principle 2, Requirement 8 of the Archives New Zealand Electronic Recordkeeping Metadata Standard asks for seven mandatory elements to be captured: A unique identifier A name Date […]

By ross-spencer, posted in ross-spencer's Blog

12th Jun 2013  4:01 AM  26524 Reads  17 Comments

The DROID software tool is developed by The National Archives (UK) to perform automated batch identification of file formats by assigning Pronom Unique Identifiers (PUIDs) and MIME types to files. The tool uses so called signature files as a basis of information stemming from the PRONOM technical registry. I am here presenting some considerations for […]

By shsdev, posted in shsdev's Blog

24th May 2013  11:44 AM  16550 Reads  3 Comments

Last year (2012) the KB released a report on the suitability of the EPUB format for archival preservation. A substantial number of EPUB-related developments have happened since then, and as a result some of the report's findings and conclusions have become outdated. This applies in particular to the observations on EPUB 3, and the support […]

By johan, posted in johan's Blog

23rd May 2013  2:23 PM  17885 Reads  No comments

File Information Tool Set (FITS) is the Harvard Library's "Swiss army knife" for file characterization. Created originally for use with the library's Digital Repository System (DRS), it's been made available as open source, and several other institutions have made use of it. The OPF online hackathon last November included some work on it, and recently […]

By garymcgath, posted in garymcgath's Blog

3rd Apr 2013  12:36 PM  11697 Reads  1 Comment

A couple of preservation workflows (such as full system preservation through imaging) or processing in digital forensics depend on reliable hardware-software stacks for identity system disk migrations. As especially the x86 platform is moving forward very fast, the hardware and software changes rapidly. Even if the standard suggests compatibility, there are a number of pitfalls […]

By Dirk von Suchodoletz, posted in Dirk von Suchodoletz's Blog

20th Mar 2013  10:28 AM  12467 Reads  No comments

“Characterization” can mean many things (I’m particularly fond, especially in this context, of the OED’s “creation of a fictitious character or fictitious characters”). Back in October Paul Wheatley suggested that digital preservation practitioners needed “better characterisation” and defined this as enabling them to determine the condition, content and value of digital records prior to ingest […]

By pixelatedpete, posted in pixelatedpete's Blog

15th Mar 2013  12:23 PM  15582 Reads  1 Comment

Part of my work on the SCAPE testbeds involves producing a workflow for the large scale migration of TIFF to JP2 files, with validation.  The tests I have run all involve the lossy compression of files. Two tools that could be used for the validation of image payload, and therefore success of a migration, are […]

By willp-bl, posted in willp-bl's Blog

5th Mar 2013  10:04 AM  12768 Reads  No comments