Chapter 4: Metadata Magic 103 elements, element refi nements, encoding schemes (qualifi ers), and con- trolled vocabulary terms (the DCMI type vocabulary). For each term, some metadata (or meta-metadata) is included: Universal Resource Identifi er (URI), label name, its defi nition in human-readable form, an optional comment, type (element, element refi nement, encoding- scheme, vocabulary term), status, and date issued. The elements include labels such as contributor, coverage, creator, date, description, format, identifi er, and language. Element refi ne- ments include labels such as access rights, audience, dateCopyrighted, and relations such as isPartOf and isReplacedBy. Encoding schemes include labels such as IMT (Internet Media Type), ISO3166 (country codes), MESH (medical subject headings), DCMI Point (a point in space), and URI. Finally, vocabulary terms include labels such as Col- lection, Dataset, Image, InteractiveResource, MovingImage, Service, Software, and Text. 31 DCMI has not gained a strong foothold in media industry, even though several global projects are applying it. It seems that the need for cross-media metadata formats, or even formats that span across virtually any media type, are not considered vital by the major players in the fi eld of digital media. Obviously an all-encompassing content metadata format is not practical, as the fi eld of digital content is devel- oping rapidly. New formats and conventions come and go on a monthly basis. However, it appears DCMI is suffi ciently powerful and relevant that almost any content must inevitably include its defi nitions, either directly or redesigned. In the recent years, some professional content producers have started to realize the potential of cross-media metadata and relations between content objects in different formats. Adobe XMP is an example of a cross-media metadata platform that has been adopted by several important players in the industry. 4.6.3 XMP 32 Adobe’s XMP (Extensible Metadata Platform) allows embedding metadata into content fi les and provides access to it. Furthermore, it defi nes standard cross-media metadata schemas, such as Basic Schema (infl uenced by Dublin Core), which can be used with any type of media. XMP also includes Rights Management and Media Manage- ment schemas. There are currently several standard bodies working on 31 How widespread is DCMI: http://askdcmi.askvrd.org/default.aspx?id= 11112&cat=1739 32 http://www.adobe.com/products/xmp/
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