Digital Library Researcher
Los Alamos National Laboratory
The JPEG 2000 image format has attracted considerable attention due to its rich feature set defined in a multi-part open ISO standard, and its potential use as a holy-grail preservation format providing both lossless compression and rich service format features. A number of factors, however, still prevent the widespread adoption of JPEG 2000 in the library and archive communities:
• lack of a clearly recognizable technology champion
• lack of clear guidelines for general and content-specific compression settings
• lack of an implementation agnostic (e.g., Kakadu, Aware, etc.) application programming interface (API) for JPEG 2000 compression and extraction
• lack of an open-source service framework, upon which rich Web 2.0-style applications can be developed
The development of aDORe djatoka, an open-source JPEG 2000 image server and dissemination framework, was recently undertaken to help address some of these issues. The djatoka image server is geared towards Web 2.0-style reuse through URI-addressability of all image disseminations including regions, rotations, and format transformations. Djatoka also provides a JPEG 2000 compression / extraction API that serves as an abstraction layer from the underlying JPEG 2000 library (e.g., Kakadu, Aware, etc). Although a significant contribution, djatoka only helps to address half the adoption issues described above. In order to address the first two issues, a working group of established players in the digital preservation arena should be established to provide case studies illustrating the benefits of JPEG 2000 for both preservation and access, and to provide compression setting guidance and prescribe a set of default compression settings for particular types of content.
The project briefing will outline the goals and recent developments of the project, as well as provide a demonstration of the djatoka image server and available client implementations. The presenter will solicit interest and possibilities for the creation of a working group to aid the adoption of JPEG 2000.
Handout (MS Word)