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The GRAVITATE platform is divided into a web-client and a desktop-client which are connected to each other. Before using the platform a user has to create an account and log into the system. The main function of the web-client is to support a sophisticated search engine as well as basic inspection tools for the 3D models of fragments and their related metadata. It is used to make a first selection of potentially interesting fragments, which will then be automatically available in the desktop-client for further analysis and re-assembly.

The desktop-client is more complex and has the following components, named views, which will be explained in more detail below: Inspection, Fragment, ReAssembly, History and Clipboard.

The interface is still under development and a functional release will be available soon.


The Web-Client

The web client is supported by the Metaphacts platform, the same that hosts ResearchSpace, a search engine developed by the British Museum. Thanks to the common platforms, GRAVITATE can utilize functionalities and contents of ResearchSpace.

The dashboard of the web-client is divided in two main areas: the clipboard and a large work area.

In the latter the user can perform semantic queries by establishing meaningful relationships between a set of search terms: Thing, Actor, Place, Time, Event and Concept. It is also the place where the search results will be displayed.


The work area can also be used to inspect single fragments by looking at their metadata and at a low resolution 3D model of the fragment at interest. It will also be possible to perform a similarity search based on geometric and colorimetric properties.


Fragments that the user wishes to explore and analyse in more detail working on high resolution models, can be selected and saved as sets in the clipboard, which will then be available in the Desktop-Client, where the more advanced analysis takes place.



The Desktop-Client

The Desktop-Client is divided in four main areas. On top is the menu bar in which the user can select between the different views: Inspection, Fragment, ReAssembly, History and Groups. On the left there are the tools specific for each view. In the centre there is the actual work space, where all the actions are performed and on the right is the clipboard where the same selection of fragments identified in the web client are visible.


Inspection. In the Inspection view the user can load a set of previously selected fragments to visualise them at high resolution together with their metadata. Fragments can be added to the work space for inspection, where standard graphical interactions tools are provided. It is possible to view more than one fragment at the same time.



Fragment. In the Fragment view the user has the following tools at his disposition: Load Vocabulary, Manual Feature selection/editing, Geometric Characterization, 3D Annotation and the visualisation of facets.

The main functionalities of interest in this view are the analysis and annotation of fragments. In particular, it is possible to visualise geometric properties such as the mean curvature, and detect features such as eyes and mouths in a statue or 2D and 3D patterns. The part-based annotation of 3D models takes also place in this view, where a controlled vocabulary, the Cultural Heritage Artifact Partonomy, has been defined to annotate the interesting parts of the fragment under investigation.




ReAssembly. The ReAssembly view is in charge of the reassembly of a subset of fragments present in the clipboard. When artefacts are placed into the ReAssembly Workbench the process starts providing a number of candidate pairs of fragments to be combined according to a specific compatibility score. These candidates for assemblies can then be approved or rejected by the user, and the process can be run again until no other matches are found.

There will also be available a tool for template-based reconstruction in this view. Based on a 3D template loaded into the workspace,  fragments will be opportunely positioned according to the information available from their metadata and annotations.




History. In the History view it is possible to document every step of the process executed in the dashboard in order to record the workflow that led to specific findings. This view is currently under development.



Groups. The Group view is used to create/edit groups of fragments with certain relationships which were identified during the working session. Each group is equipped with textual notes describing the group itself.