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Media type:
E-Article
Title:
IsoCam : Interactive Visual Exploration of Massive Cultural Heritage Models on Large Projection Setups
:
Interactive Visual Exploration of Massive Cultural Heritage Models on Large Projection Setups
Published:
Association for Computing Machinery (ACM), 2014
Published in:
Journal on Computing and Cultural Heritage, 7 (2014) 2, Seite 1-24
Language:
English
DOI:
10.1145/2611519
ISSN:
1556-4673;
1556-4711
Origination:
Footnote:
Description:
We introduce a novel user interface and system for exploring extremely detailed 3D models in a museum setting. Three-dimensional models and associated information are presented on a large projection surface controlled by a touch-enabled surface placed at a suitable distance in front of it. Our indirect user interface, dubbed IsoCam , combines an object-aware interactive camera controller with an interactive point-of-interest selector and is implemented within a scalable implementation based on multiresolution structures shared between the rendering and user interaction subsystems. The collision-free camera controller automatically supports the smooth transition from orbiting to proximal navigation, by exploiting a distance-field representation of the 3D object. The point-of-interest selector exploits a specialized view similarity computation to propose a few nearby easily reachable interesting 3D views from a large database, move the camera to the user-selected point of interest, and provide extra information through overlaid annotations of the target view. The capabilities of our approach have been demonstrated in a public event attended by thousands of people, which were offered the possibility to explore submillimetric reconstructions of 38 stone statues of the Mont’e Prama Nuragic complex, depicting larger-than-life human figures, and small models of prehistoric Nuraghe (cone-shaped stone towers). A follow-up of this work, using 2.5m-high projection screens, is now included in permanent exhibitions at two Archeological Museums. Results of a thorough user evaluation, involving quantitative and subjective measurements, are discussed.