Definition
Context extraction deals with extracting relevant data (metadata) from complex multimedia files.
Multimedia files contain complex and expensive audiovisual representations. Extracting relevant contents from these files – preferably in a (semi-)automatic manner – in a way that facilitates future indexing, search, and retrieval is a challenging task. The ever growing amount of digitally encoded multimedia content produced, stored, and distributed worldwide [1] makes it an even harder and more relevant job.
Even though creation, storage, and dissemination of multimedia contents have become easier and cheaper than ever before, the resulting content has value only if it can be discovered and used. The most popular way to discover contents on the Internet is to use a text-based search engine. General-purpose text-based search engines usually do a poor job when searching for multimedia contents, primarily due to the fact that they often must rely on potentially subjective,...
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Marques, O. (2008). Content Extraction and Metadata. In: Furht, B. (eds) Encyclopedia of Multimedia. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-78414-4_275
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