GRAVITATE A platform for the Re-Unification, Re-Association and Re-Assembly of Cultural Heritage artefacts

The structure of the presentation

• How was the project born and what problems does Gravitate address?

• How does the platform work and what can you do with it?

• 3D data quality - 3D models for advanced computing

Introducing the issues - the case study of Salamis

• Accessibility

• Quantity of data to be studied

• Fragmentation

Re-Unification Re-Association Re-Assembly

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Re-Unification - a virtual repository Physically separated objects can be re-unified digitally in a repository comprising semantic AND geometric data

Data enrichment

• Calculation of geometric properties (e.g. facets, average thickness, 2D and 3D patterns, curvature, colour etc.)

• Semantic enrichment through Natural Language Processing (NLP)

Re-Association – search / visualization / analysis

The Web – Client : semantic and geometric search

The Web – Client : semantic and geometric search

Similarity by: • Colour • Curvature • 2D and 3D pattern • Shape • Thickness • Rugosity

The Desktop-Client : Visualization and Comparison of fragments and their properties

Re-Association – search / visualization / analysis

The Desktop-Client : Visualization and Comparison of fragments and their properties -

Curvature, colour distribution, facets,…

Annotations with a fixed vocabulary that feed the metadata

Re-Association – search / visualization / analysis

Re-Assembly – semi automatic reassembly and template

Work projects and documenting the process

3D data quality – 3D models for advanced computing

This looks like a nice model, but…

It has: • 150 Self-Intersections • 2 Non-Manifold Edges • 2 Small Holes • 207 Shells

3D acquisition and post-processing – a GRAVITATE experience

• 3D data capture – scanning versus structure from motion

• Post-processing – MeshLab versus Geomagic Wrap

Thank you for your attention

Website: www.gravitate-project.eu E-mail: gravitate_project@cyi.ac.cy