Data Compression & Data Compression Basics
Data compression uses fewer bits while encoding information. Lossless compression reduces redundancy and error. Lossy compression involves the perception of the data and sometimes sacrifices some data in the process. Lossless compression is used for things like optimizing disk space. Lossy compression is used for both image and audio compression. Examples of lossy compression can be found in digital cameras and DVDs.
"Imaging Pittsburgh"
This article summarizes Pitt's Digital Research Library's project to place photo collections online from from the University's Archives Service Center, Carnegie Museum of Art, and the Historical Society of Western Pennsylvania. The online collection is available through the Historic Pittsburgh Website. The project anticipated putting more than 10,000 images online. Metadata presented challenges with creation, controlled vocabulary, and the use of dates. Digital projects like this one are a great way to provide users with access to historical images.
"Youtube and Libraries"
This article provides a brief introduction to Youtube. The article also describes four examples on how Youtube could be used in an academic library. Filming services, introducing library resources, visual directions to the library, and video tutorials were all recommended. I think that Youtube can be a great resource for all types of libraries. The ways the site can be utilized are boundless.
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