 Online Learning Update Ray Schroeder, editor, COLRS - Online@Illinois SpringfieldOnline Learning Update - a blog published daily since 2001 by Ray Schroeder, Professor Emeritus, University of Illinois at Springfield |
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Tuesday, August 12, 2008
A Format for Digital Preservation of Images - Paolo Buonora & Franco Liberati, D-Lib
Digital preservation requires a strategy for the storage of large quantities of data, which increases dramatically when dealing with high resolution images. Typically, decision-makers must choose whether to keep terabytes of images in their original TIFF format or compress them. This can be a very difficult decision: to lose visual information though compression could be a waste of the money expended in the creation of the digital assets; however, by choosing to compress, the costs of storage will be reduced. Wavelet compression of JPEG 2000 produces a high quality image: it is an acceptable alternative to TIFF and a good strategy for the storage of large image assets.
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