Free-form deformation for implicit surfaces
| dc.contributor.author | Sugihara, Masamichi | |
| dc.contributor.supervisor | Wyvill, Brian | |
| dc.date.accessioned | 2009-08-20T22:51:59Z | |
| dc.date.available | 2009-08-20T22:51:59Z | |
| dc.date.copyright | 2009 | en |
| dc.date.issued | 2009-08-20T22:51:59Z | |
| dc.degree.department | Department of Computer Science | |
| dc.degree.level | Master of Science M.Sc. | en |
| dc.description.abstract | Implicit surfaces offer many advantages for sketch-based modeling systems, such as blending, CSG, and a procedural object hierarchy. Free-form deformation (FFD) is also extremely useful in this context, however existing FFD approaches do not support implicit surface representations, and FFD lattice manipulation is time-consuming compared to sketch-based techniques. In this thesis, an FFD technique suitable for implicit surface representations is described. To enhance real-time feedback, the problem is split into an approximate formulation used during interactive deformation, and a more robust variational technique which preserves desirable scalar field properties. As an interface to manipulate the deformation, a sketch-based volumetric peeling interface is introduced. The user's task is to draw a curve on the surface, and pull or push the surface to the desirable position via the curve. Subsequently, the deformation is automatically defined. This technique has been implemented in a prototype implicit FFD system called Taco. Results created in Taco show that a desirable deformation can be easily achieved while preserving implicit properties. | en |
| dc.identifier.bibliographicCitation | Sugihara, M., de Groot, E., Wyvill, B., and Schmidt, R. A sketch-based method to control deformation in a skeletal implicit surface modeler. In Proceedings of the 5th Eurographics Workshop on Sketch-Based Interfaces and Modeling (2008), pp. 65-72. | en |
| dc.identifier.uri | http://hdl.handle.net/1828/1554 | |
| dc.language | English | eng |
| dc.language.iso | en | en |
| dc.rights | Available to the World Wide Web | en |
| dc.subject | Computer Graphics | en |
| dc.subject | Implicit Surfaces | en |
| dc.subject | User Interfaces | en |
| dc.subject.lcsh | UVic Subject Index::Sciences and Engineering::Applied Sciences::Computer science | en |
| dc.title | Free-form deformation for implicit surfaces | en |
| dc.type | Thesis | en |