Tag: JPEG2000

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  • JPEG 2000 seminar – edited highlights #2


    This blog post continues my summary of the JPEG 2000 for the Practitioner Seminar (the edited highlights of the first five presentations can be seen in a previous blog post). Following Svein Arne Brygfjeld’s discussion of the  National Library of… Continue reading

  • JPEG 2000 seminar – draft programme now available


    Places are still available on the JPEG 2000 seminar to be held at the Wellcome Trust on 16 November 2010. Draft programme with timetable and confirmed speakers: 09:00 Registration, coffee 10:00 Welcome, introduction Christy Henshaw, Wellcome Library, Chair of JP2K-UK… Continue reading

  • Guest post: JPEG2000 recipes for the Aware encoder


    As our first guest poster, Bill Comstock, Head of Imaging Services at Harvard College Library, writes about the specific “recipes” used at Harvard for producing JPEG2000 images. I needed help remembering when it was that we began making JPEG2000 images.… Continue reading

  • Determining rates of JPEG 2000 compression on a collection-by-collection basis


    As a result of our decision to “go lossy”, we need to make sure that the level of lossiness is appropriate to the image content. We can’t do this on the individual image level, as there are simply too many… Continue reading

  • The JPEG2000 problem for this week


    JPEG2000 isn’t the easiest of formats to disseminate. Browsers typically handle the format with difficulty and then require plugins or extensions to render the format. We don’t want our users to have to download anything just to be able to… Continue reading

  • Future migration of JPEG2000


    Those of us who work with digital assets know that one day we’ll face format obsolescence. The formats we have in our care will no longer be rendered by the applications that created them or by readily obtainable alternatives. This… Continue reading

  • Lossy v. lossless compression in JPEG 2000


    The arguments for and against using JPEG 2000 lossy files for long-term preservation are largely centred around two issues: 1) that the original capture image is the true representation of the physical item, and therefore all the information captured at… Continue reading

  • Finding a JPEG 2000 conversion tool


    It should be stated straight away that we don’t have any programming capacity at the Wellcome Library (or the Wellcome Trust, our parent company). We don’t do any in-house software development, and we don’t use open source software much as… Continue reading

  • JPEG 2000 workshop with Richard Clark


    In the wake of taking on board the recommendations from the Buckley/Tanner report, we needed to start looking at how we would actually create these JPEG 2000s as part of our digitisation workflow. As the JP2K-UK group meeting showed us,… Continue reading

  • Initiating the JP2K-UK Implementation Working Group


    By Autumn 2009, we were committed to using the JP2 format for our digitisation projects. However, we knew that the lack of good information and communication between practitioners was a risk factor. First of all, we wanted to know what… Continue reading