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Published byBaldric Garrett Modified over 9 years ago
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Extracting Geometry from Digital Models in a Cultural Heritage Digital Library Thomas L. Milbank Perseus Project, Tufts University tmilbank@perseus.tufts.edu
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Introduction Digital libraries can … »disseminate objects “as is” through cataloged metadata »disseminate objects customized to the user through automated processes
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Models and libraries The treatment of models as immutable objects... »leads to in toto retrieval »impacts library search results
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Paradigm: a search for column capitals
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Models as texts Digital model of Boston 07.1002, a relief from tomb G 2110 at Giza,... rendered in an image rendered in XML
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The Perseus document manager & X3D X3D encoding of tomb G 2110 The Boston 07.1002 “Transform” is mapped and indexed as “object” Index of elements/mappings
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The Perseus document manager & X3D PDM references the index PDM opens the model and reads the sub-object(s) PDM processes the X3D fragment and outputs VRML for display in an HTML page
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Results of search for “Boston 07.1002”... … include sub-object instantiations
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Results of search for “Boston 07.1002”... … include sub-object instantiations
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Implications for model design Need for well-defined and well-named geometry »Object-oriented modeling is suitable natively »Layer-oriented modeling is suitable with forethought
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Conclusions XML processing techniques … »can be applied to digital models successfully »facilitate the identification of geometry incorporated into larger constructs »enable the extraction of sub-object geometry The application of XML processing techniques establishes a framework for the integration of models with additional library services
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Visit the Perseus Digital Library at http://www.perseus.tufts.edu Thomas L. Milbank Perseus Project, Tufts University tmilbank@perseus.tufts.edu
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