Artificial Intelligence
ArtDefo: accurate real time deformable objects
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Parametric and Feature Based CAD/Cam: Concepts, Techniques, and Applications
Sketch- and constraint-based design of B-spline surfaces
Proceedings of the seventh ACM symposium on Solid modeling and applications
Specification of freeform features
SM '03 Proceedings of the eighth ACM symposium on Solid modeling and applications
Extended Constrained Deformations: A new Sculpturing Tool
SMI '99 Proceedings of the International Conference on Shape Modeling and Applications
Parameterization of Freeform Features
SMI '01 Proceedings of the International Conference on Shape Modeling & Applications
Automatic Knot Determination of NURBS for Interactive Geometric Design
SMI '01 Proceedings of the International Conference on Shape Modeling & Applications
Hierarchical D-NURBS Surfaces and Their Physics-Based Sculpting
SMI '01 Proceedings of the International Conference on Shape Modeling & Applications
Interactive spline-driven deformation for free-form surface styling
Proceedings of the 2006 ACM symposium on Solid and physical modeling
Pen-based styling design of 3D geometry using concept sketches and template models
Proceedings of the 2006 ACM symposium on Solid and physical modeling
ACM SIGGRAPH 2008 papers
3D sketching for aesthetic design using fully free-form deformation features
Computers and Graphics
Smooth detail features on multiresolution surface
ICCVG'10 Proceedings of the 2010 international conference on Computer vision and graphics: Part II
Feature curves with cross curvature control on catmull-clark subdivision surfaces
CGI'06 Proceedings of the 24th international conference on Advances in Computer Graphics
Responsive interaction based on sketch in concept styling
INTERACT'05 Proceedings of the 2005 IFIP TC13 international conference on Human-Computer Interaction
Parametric design method for shapes with aesthetic free-form surfaces
GMP'06 Proceedings of the 4th international conference on Geometric Modeling and Processing
Construction and modification of 3D geometry using a sketch-based interface
SBM'06 Proceedings of the Third Eurographics conference on Sketch-Based Interfaces and Modeling
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This paper addresses the designers' activity and in particular the way designers express an object shape in 2D sketches through character lines. The tools currently available in commercial CAS/CAD systems to manipulate the digital models are still not sufficiently suited to support design. In this paper, we introduce the so-called Fully Free Form Deformation Features (δ-F4), able to take into account the curve-oriented stylists' way of working. Both the advantages of a free form surfaces deformation method and a feature-based approach are merged to define highlevel modelling entities allowing for a direct manipulation of surfaces through a restricted number of intuitive parameters. In addition, a δ-F4 classification is proposed to permit a fast access to the desired shape according to its semantics. The proposed approach is illustrated with some examples.