Abstract:
This paper explores the use of eXtensible Mark-up Language (XML) technologies, including eXtensible three-Dimensions (X3D), Scene Application Interface (SAI), eXtensible path (Xpath) and eXtensible Stylesheet Language (XSL) to display and manipulate a model along with associated temporal data. X3D, which is the new standard for the display of three-dimensional models over the World Wide Web, offers significant improvements for real-time client-side manipulation over other methods available for use on the Internet. These improvements are due to X3D being an application of XML. Real-time client side manipulation and display of a model and associated textual information through use of a Web Browser and Plugin is demonstrated. A single file is employed to contain all data related to how the structure has evolved and developed over time. This allows the user to view and explore the model in different states (times) and to read relevant historical textural information.
This paper is about the use of XML technologies, including X3D, SAI, Xpath and XSL, to display and manipulate a model with associated temporal data. It starts by stressing out the advantages of using 3D models for representing historical artefacts. However, these models on their own do not have sufficient data to tell the “whole story”. Therefore, it would be advantageous to have a virtual visit to the artefact since the archaeological structure evolves and changes over time.
ResponderEliminarSo, the objectives of this work are (1) to investigate methods for the construction of a 3D temporal model using X3D for display within a web browser, (2) to investigate methods for the display of temporal data associated with the model using the same web browser window and (3) to investigate procedures to visualize different temporal states of the model. Therefore, this work is concerned with an archaeological application of X3D and XML in which they are employed to enable buildings or artefacts that no longer exist or have changed significantly to be viewed and to combine these views with important temporal or historical data (combines 3D data with metadata).
These techniques are applied to the Stonehenge model at three different states. But before present the final result, the authors give some attention to the way a X3D model might be produced. So, a X3D model is either directly produced of it can be converted from a 3D modelling software, such as 3DS MAX. In this case the models of Stonehenge were produced using 3DS MAX: However, there are some features of 3DS MAX, such as grouping, that are more adequate for the X3D conversion purpose. After the conversion process, the X3D file has to be post-processed to simplify some complex forms.
As a result of this work, the temporal data associated with the 3D model can be displayed in the same web browser window. By incorporating the Metadata tag to a X3D file, it is possible to integrate all the data relating to how the structure has evolved and developed over time with the temporal data. XPath and XSLT is used to filter and display the data, while the grouping and switch tags are used to structure the document, allowing the use of SAI to view and explore the model in different times.