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Freeform Image

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3 Author(s)
Schiwietz, T. ; Tech. Univ. Munich, Munich ; Georgii, J. ; Westermann, R.

In this paper we present a technique for image deformation in which the user is given flexible control over what kind of deformation to perform. Freeform image extends available image deformation techniques in that it provides a palette of intuitive tools including interactive object segmentation, stiffness editing and force-based controls to achieve both a natural look and realistic animations of deforming parts. The model underlying our approach is physics-based and it is amenable to a variety of different kinds of image manipulations ranging from as-rigid- as-possible to fully elastic deformations. We have developed a multigrid solver for quadrangular finite elements, which achieves real-time performance for high resolution pixel grids. On recent CPUs this solver can handle about 16K co-rotated finite elements at roughly 60 ms.

Published in:

Computer Graphics and Applications, 2007. PG '07. 15th Pacific Conference on

Date of Conference:

Oct. 29 2007-Nov. 2 2007