Sunday, November 16, 2008

djatoka jpeg 2000 image server session at dlf

My brief, unstructured notes from a presentation by Ryan Chute from Los Alamos National Labs on the Djatoka JPEG 2000 Image Server, at at the DLF Fall 2008 Forum.

  • APIs and libraries: Kakadu SDK, Sun Java advanced images, NIH ImageJ, OCLC OpenURL OOM. Could work with other than Kakadu, including Aware.
  • Viewer adapted from a British Library implementation.
  • Features: resolution and region extraction, rotation, support for rich set of input/output formats, extensible interfaces for image transformations, including watermarking. Persistent URLs for images and for individual regions.
  • URI-addressability for specified regions needed, and OpenURL provided a standardized service framework foundation for requesting regions. This extends the OpenURL use cases.
  • Service example: Ajax-based client requests, obtains metadata and regions from image server using image identifier, client iterates through tiles and metadata to display.

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