Title
N-way morphing for 2D animation
Abstract
We present a novel approach to the creation of varied animations from a small set of simple 2D input shapes. Instead of providing a new 2D shape for each keyframe of an animation sequence, we interpolate between a few example shapes in a reduced pose-space. Similar approaches have been presented in the past, but were restricted in the types of input or range of deformations allowed. In order to address these limitations, we reformulate the problem as an N-way morphing process on 2D input bitmap or vector graphics. Our formulation includes an N-way mapping technique, an efficient, rigidity preserving nonlinear blending function, improved extrapolation and a novel scattered data interpolation technique to manage the reduced pose-space. The resulting animations are correlated to paths in the reduced pose-space, allowing users to intuitively and interactively control temporal behaviours with simple gestures. We demonstrate our techniques in several example animations. Copyright © 2009 John Wiley & Sons, Ltd. We present a novel approach to the creation of varied animations by interpolating a small set of input images in a reduced pose-space. The technique includes an N-way mapping technique, an efficient, rigidity preserving nonlinear blending function, improved extrapolation and a novel scattered data interpolation technique to manage the reduced pose-space. Together these allow users to intuitively and interactively control temporal behaviours with simple gestures.
Year
DOI
Venue
2009
10.1002/cav.v20:2/3
Journal of Visualization and Computer Animation
Keywords
Field
DocType
2d animation,morphing,deformation,matching,interpolation
Rigidity (psychology),Morphing,Computer vision,Vector graphics,Computer graphics (images),Computer science,Gesture,Interpolation,Extrapolation,Animation,Artificial intelligence,Bitmap
Journal
Volume
Issue
Citations 
20
2‐3
9
PageRank 
References 
Authors
0.60
13
3
Name
Order
Citations
PageRank
William Baxter1653.78
Pascal Barla255329.07
Ken Anjyo338146.67