One of the problems with #blogjune is the challenge to blog daily. There is this pressure to produce, so when you miss a day at the start, as I did, or fail to save a draft and then later find it and publish it, as I have done, twice, you feel you have let yourself down. Amends must be made. So, I owe you two extra blogs. The other problem with #blogjune, and the pressure to produce, is that articles that I would normally take several days to write, may end up in parts. This post is part of one of those: it may also be an extra post – we will have to see how I do this evening.
Yesterday (and the day before) I wrote about tiff, and the concerns that my colleague, Meg, and I had about its use. The Library of Congress’ recent blog posts, Comparing formats for still image digitizing, provides further bases for discussion. In the first post, Carl Fleischhauer from the US National Digital Information Infrastructure and Preservation Program (NDIIPP) provides a good overview of Tiff and raster formats in general. The comments expand on some of his points and discuss the differences between preservation and access formats. In the second blog post, Carl discusses the ‘wrappers’ and metadata coding for jpeg formats, including jpeg2000, and has a brief peek at png formats. The moral to take from both posts is that you need to really understand what is happening in the backend of your image format, and be able to make the necessary modifications and extensions to ensure that the format you use will best suit the purpose for your digitisation program.