Manipulating, Deforming and Animating Sampled Object Representations

A sampled object representation (SOR) defines a graphical model using data obtained from a sampling process, which takes a collection of samples at discrete positions in space in order to capture certain geometrical and physical properties of one or more objects of interest. Examples of SORs include...

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Bibliographic Details
Published in:Computer graphics forum Vol. 26; no. 4; pp. 824 - 852
Main Authors: Chen, M., Correa, C., Islam, S., Jones, M. W., Shen, P.-Y., Silver, D., Walton, S. J., Willis, P. J.
Format: Journal Article
Language:English
Published: Oxford, UK Blackwell Publishing Ltd 01.12.2007
Subjects:
Animation
Computer graphics
deformation
I.3.5 [Computer Graphics]: Computational Geometry and Object Modeling
I.3.6 [Computer Graphics]
I.3.7 [Computer Graphics]: 3D Graphics and Realism - Animation
manipulation
Methodology and Techniques - Graphics data structures and data types Interaction techniques
point clouds
sampled object representations
Sampling
Simulation
Studies
surgical simulation
volume datasets
volume visualization
ISSN:0167-7055, 1467-8659
Online Access:Get full text
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Summary:A sampled object representation (SOR) defines a graphical model using data obtained from a sampling process, which takes a collection of samples at discrete positions in space in order to capture certain geometrical and physical properties of one or more objects of interest. Examples of SORs include images, videos, volume datasets and point datasets. Unlike many commonly used data representations in computer graphics, SORs lack in geometrical, topological and semantic information, which is much needed for controlling deformation and animation. Hence it poses a significant scientific and technical challenge to develop deformation and animation methods that operate upon SORs. Such methods can enable computer graphics and computer animation to benefit enormously from the advances of digital imaging technology. In this state of the art report, we survey a wide range of techniques that have been developed for manipulating, deforming and animating SORs. We consider a collection of elementary operations for manipulating SORs, which can serve as building blocks of deformation and animation techniques. We examine a collection of techniques that are designed to transform the geometry shape of deformable objects in sampled representations and pay particular attention to their deployment in surgical simulation. We review a collection of techniques for animating digital characters in SORs, focusing on recent developments in volume animation.
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ISSN:0167-7055
1467-8659
DOI:10.1111/j.1467-8659.2007.01102.x