2014
Other
Restricted
Generalized trackball for surfing over surfaces
Malomo L, Cignoni P, Scopigno R
We present a friendly, efficient 3D interaction technique that, generalizing the well known trackball approach, unifies and blends the two common interaction mechanisms known as panning and orbiting. The approach allows to inspect a virtual object by navigating over its surrounding space, remaining at a chosen distance and performing a sort of automatic panning over its surface. This generalized trackball allows an intuitive navigation of topologically complex shapes, by enabling unexperienced users to visit hard-to-be-reached parts better and faster than with standard GUI components. The approach is based on the construction of multiple smooth approximations of the model under inspection and, at rendering time, it constrains the camera to stay at a given distance to these approximations. The approach is designed to require negligible preprocessing and memory overhead and works well for both mouse-based and touch interfaces. A user study confirms the impact of the proposed technique.Project(s): HARVEST4D
Malomo L, Cignoni P, Scopigno R
We present a friendly, efficient 3D interaction technique that, generalizing the well known trackball approach, unifies and blends the two common interaction mechanisms known as panning and orbiting. The approach allows to inspect a virtual object by navigating over its surrounding space, remaining at a chosen distance and performing a sort of automatic panning over its surface. This generalized trackball allows an intuitive navigation of topologically complex shapes, by enabling unexperienced users to visit hard-to-be-reached parts better and faster than with standard GUI components. The approach is based on the construction of multiple smooth approximations of the model under inspection and, at rendering time, it constrains the camera to stay at a given distance to these approximations. The approach is designed to require negligible preprocessing and memory overhead and works well for both mouse-based and touch interfaces. A user study confirms the impact of the proposed technique.Project(s): HARVEST4D
2014
Journal article
Open Access
Field-aligned mesh joinery
Cignoni P, Pietroni N, Malomo L
We have proposed a novel method for the automatic fabrication of an illustrative representation of a given geometry made up of interlocked planar slices. We have shown the effectiveness of our method both in terms of illustrative quality and physical stability. To the best of our knowledge, no existing fabrication paradigms are able to represent such complex objects. Our method is particularly efficient in terms of production costs. In fact, the production costs scalewith the surface of the object since slices are sampled almost uniformly over the surface. In addition, due to the slice decomposition, mesh joinery is also suitable for the production of medium-scale objects. A useful extension of our framework would be to automatically generate effective instructions to simplify the manual assembly procedure, for example, a packing strategy that could preserve the partial ordering of the model to facilitate the search for the next piece. © 2014 ACM 0730-0301/2014/01-ART3 15.00.Source: ACM TRANSACTIONS ON GRAPHICS (ONLINE), vol. 33 (issue 1)
DOI: 10.1145/2537852
Project(s): HARVEST4D
Metrics:
Cignoni P, Pietroni N, Malomo L
We have proposed a novel method for the automatic fabrication of an illustrative representation of a given geometry made up of interlocked planar slices. We have shown the effectiveness of our method both in terms of illustrative quality and physical stability. To the best of our knowledge, no existing fabrication paradigms are able to represent such complex objects. Our method is particularly efficient in terms of production costs. In fact, the production costs scalewith the surface of the object since slices are sampled almost uniformly over the surface. In addition, due to the slice decomposition, mesh joinery is also suitable for the production of medium-scale objects. A useful extension of our framework would be to automatically generate effective instructions to simplify the manual assembly procedure, for example, a packing strategy that could preserve the partial ordering of the model to facilitate the search for the next piece. © 2014 ACM 0730-0301/2014/01-ART3 15.00.Source: ACM TRANSACTIONS ON GRAPHICS (ONLINE), vol. 33 (issue 1)
DOI: 10.1145/2537852
Project(s): HARVEST4D
Metrics:
See at:
CNR IRIS 
| ACM Transactions on Graphics | www.scopus.com | ACM Transactions on Graphics 
| CNR IRIS | CNR IRIS
2014
Contribution to book
Restricted
Web and mobile visualization for cultural heritage
Di Benedetto M, Ponchio F, Malomo L, Callieri M, Dellepiane M, Cignoni P, Scopigno R
Thanks to the impressive research results produced in the last decade, digital technologies are now mature for producing high-quality digital replicas of Cultural Heritage (CH) artifacts. At the same time, CH practitioners and scholars have also access to a number of technologies that allow distributing and presenting those models to everybody and everywhere by means of a number of communication platforms. The goal of this chapter is to present some recent technologies for supporting the visualization of complex models, by focusing on the requirements of interactive manipulation and visualization of 3D models on the web and on mobile platforms. The section will present some recent experiences where high-quality 3D models have been used in CH research, restoration and conservation. Some open issues in this domain will also be presented and discussed.DOI: 10.1007/978-3-662-44630-0_2
Project(s): ARIADNE
Metrics:
Di Benedetto M, Ponchio F, Malomo L, Callieri M, Dellepiane M, Cignoni P, Scopigno R
Thanks to the impressive research results produced in the last decade, digital technologies are now mature for producing high-quality digital replicas of Cultural Heritage (CH) artifacts. At the same time, CH practitioners and scholars have also access to a number of technologies that allow distributing and presenting those models to everybody and everywhere by means of a number of communication platforms. The goal of this chapter is to present some recent technologies for supporting the visualization of complex models, by focusing on the requirements of interactive manipulation and visualization of 3D models on the web and on mobile platforms. The section will present some recent experiences where high-quality 3D models have been used in CH research, restoration and conservation. Some open issues in this domain will also be presented and discussed.DOI: 10.1007/978-3-662-44630-0_2
Project(s): ARIADNE
Metrics:
See at:
doi.org | CNR IRIS | CNR IRIS | link.springer.com