Data Compression.
· Amazing to think of the amount of work involved in what seems so effortless when we use it.
· Was not aware there are different types of compression.
o Lossless provides a higher quality of reconstruction and is necessary for things where data integrity is important such as spreadsheets or programs.
o Lossy will clip data reducing its quality and is particularly useful video and audio data. A degree of quality can be maintained based on the physiological limitations.
· The DVD-HQ article helped clarify some of the questions I had about the wiki article, and broke things down rather nicely. While it was more detailed the author did a great job through examples of helping make the idea more concrete.
Imaging Pittsburgh: Creating a shared gateway to digital image collections of the Pittsburgh region
Was a great overview of the magnitude of such a task, and I think the site was well worth the efforts. I was particularly impressed when discussing how the various challenges presented by three separate institutions, Archives Service Center of the University of Pittsburgh, Carnegie Museum of Art, and the Historical Society of Western Pennsylvania were handled and the project was able to move ahead in digitizing collections of this size.
YouTube
Very good article. This is one resource that I never considered to be a resource before; the author presented some solid suggestions on how to use the service to promote the library and information literacy. I can see how the use of such a site/service can easily be used to open a library to new users, or be used to help educate them; similar to a Randy Pausch “head-fake”.
Blog comments:
Muddiest point: I am absolutely horrible with math and have always shied away from it, the Theory section of the wiki article on data compression was a bit beyond what I have been exposed to and left me somewhat confused. Even the second articles use of abbreviations was a bit much, I found myself doing a bit of “window sliding”.
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