SIGGRAPH '89 Proceedings of the 16th annual conference on Computer graphics and interactive techniques
The displacement method for implicit blending surfaces in solid models
ACM Transactions on Graphics (TOG) - Special issue on computer-aided design
Computer graphics: principles and practice (2nd ed.)
Computer graphics: principles and practice (2nd ed.)
An introduction to ray tracing
An introduction to ray tracing
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
A Generalization of Algebraic Surface Drawing
ACM Transactions on Graphics (TOG)
Introduction to Implicit Surfaces
Introduction to Implicit Surfaces
Constructive hypervolume modeling
Graphical Models - Volume modeling
Subdivision-Curve Primitives: A New Solution for Interactive Implicit Modeling
SMI '01 Proceedings of the International Conference on Shape Modeling & Applications
Implicit Modelling with Skeleton Curves: Controlled Blending in Contact Situations
SMI '02 Proceedings of the Shape Modeling International 2002 (SMI'02)
Shrinkwrap: An efficient adaptive algorithm for triangulating an iso-surface
The Visual Computer: International Journal of Computer Graphics - Special section on implicit surfaces
Combining CSG modeling with soft blending using Lipschitz-based implicit surfaces
The Visual Computer: International Journal of Computer Graphics - Special section on implicit surfaces
Bounded Blending for Function-Based Shape Modeling
IEEE Computer Graphics and Applications
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Blobtrees are volume representations particularly useful for models which require smooth blending. When blending is applied to two or more Blobtree models, extra volume will be created in between the two surfaces to form a smooth connection. Although it is easy to apply blending, it is hard to accurately control the resulting shape. More complications arise when the blended objects have large size differences. In this case the influence of the larger objects can overwhelm the influence of the smaller objects. As a result, the shape of the smaller objects can change drastically and the connection between surfaces can appear sharp instead of smooth. This paper presents a locally restricted blend method that solves the blending problem described above. The locally restricted blend locally changes the blending influence of each of the surfaces in order to control blending with the other surfaces. Unlike previous methods, this blend method works with multiple Blobtree surfaces and offers intuitive control over the resulting shape.