Efficient culling techniques for interactive deformable NURBS surfaces on GPU
Författare
Summary, in English
NURBS (Non-uniform rational B-splines) surfaces are the standard freeform representation in Computer- Aided Design (CAD) applications. Rendering NURBS surfaces accurately while they are interactively manipulated and deformed is a challenging task. In order to achieve it, the elimination from pipeline in early stages of back-facing surfaces or surface pieces is a key advantage. Furthermore, an effective interactive manipulation implies that all the culling computations should be performed for each frame, facing the possibility of fast changes in occlusion information. In this paper, different interactive culling strategies for NURBS surfaces are presented and analyzed. These culling techniques are based on the exploitation of the geometric properties presented in a NURBS surface, that allow easily to find bounds for it in screen space for each frame. Furthermore, the culling overhead for our proposals is small compared to the computational saving, outperforming a proposal without culling. An implementation of these strategies using current GPUs is presented, achieving real-time and interactive rendering rates of complex parametric models.
Avdelning/ar
Publiceringsår
2016
Språk
Engelska
Sidor
17-27
Publikation/Tidskrift/Serie
VISIGRAPP 2016 - Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications
Dokumenttyp
Konferensbidrag
Förlag
SciTePress
Ämne
- Software Engineering
Nyckelord
- Culling Techniques
- Deformable Surfaces
- NURBS
- Real-time and Interactive Methods
Conference name
11th International Conference on Computer Graphics Theory and Application, GRAPP 2016; Part of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, VISIGRAPP 2016
Conference date
2016-02-27 - 2016-02-29
Conference place
Rome, Italy
Status
Published
ISBN/ISSN/Övrigt
- ISBN: 9789897581755