Pyramid coordinates for morphing and deformation

Many model editing operations, such as morphing, blending, and shape deformation requires the ability to interactively transform the surface of a model in response to some control mechanism. For most computer graphics applications, it is important to preserve the local shape properties of input mode...

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Bibliographic Details
Published in:3D Data Processing, Visualization and Transmission pp. 68 - 75
Main Authors: Sheffer, A., Kraevoy, V.
Format: Conference Proceeding
Language:English
Published: IEEE 2004
Subjects:
Animation
Application software
Computer graphics
Deformable models
Geometry
Heart
Mesh generation
Shape control
Skeleton
Solid modeling
ISBN:9780769522234, 0769522238
Online Access:Get full text
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Summary:Many model editing operations, such as morphing, blending, and shape deformation requires the ability to interactively transform the surface of a model in response to some control mechanism. For most computer graphics applications, it is important to preserve the local shape properties of input models during editing operations. We introduce the mesh editing technique that explicitly preserves local shape properties. The method is based on a local shape representation, which we refer to as pyramid coordinates. The pyramid coordinates capture the local shape of the mesh around each vertex and help maintain this shape under various editing operations. They are based on a set of angles and lengths relating a vertex to its immediate neighbors. This representation is invariant under rigid transformations. Using pyramid coordinates, we introduce A technique for mesh deformation and morphing based on a small number of user-specified control vertices. Our algorithm generates natural looking deformations and morphing sequences in seconds with minimal user interaction.
ISBN:9780769522234
0769522238
DOI:10.1109/TDPVT.2004.1335149