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The squash-and-stretch filter for character animation

Published: 16 December 2009 Publication History

Abstract

The realistic motion data such as the motion capture data and physically based motion are not suitable for cartoon animations, in which the narrative is emphasized by exaggerated physical motion. Recently, several methods have been developed for converting an input motion into a cartoon-style motion. Wang et al. [2006] proposed an innovative method that generates anticipation and follow-through effects through the convolution of a Laplacian of Gaussians (LoG) kernel. Inspired by their work, we propose a new way of superimposing non-rigid squash-and-stretch effects [Lasseter 1987] on the motion of a rigid linkage. Our key idea is to apply a time-shift filter to position data of each joint of a skeletal character individually in order to allow its cartoon character to undergo squash-and-stretch.

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References

[1]
Hecker, C., Raabe, B., Enslow, R. W., DeWeese, J., Maynard, J., and van Prooijen, K. 2008. Real-time motion retargeting to highly varied user-created morphologies. In Proceedings of ACM SIGGRAPH '08.
[2]
Lasseter, J. 1987. Principles of traditional animation applied to 3d computer animation. In Proceedings of ACM SIGGRAPH '87, 35--44.
[3]
Wang, J., Drucker, S. M., Agrawala, M., and Cohen, M. F. 2006. The cartoon animation filter. In Proceedings of ACM SIGGRAPH '06, 1169--1173.
[4]
Williams, R. 2001. The Animator's Survival Kit: A Manual of Methods, Principles and Formulas. Faber and Faber.

Cited By

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  • (2017)The stretch-engineProceedings of the ACM SIGGRAPH / Eurographics Symposium on Computer Animation10.1145/3099564.3106639(1-2)Online publication date: 28-Jul-2017
  • (2013)A pose space for squash and stretch deformation2013 28th International Conference on Image and Vision Computing New Zealand (IVCNZ 2013)10.1109/IVCNZ.2013.6727010(166-171)Online publication date: Nov-2013

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cover image ACM Conferences
SIGGRAPH ASIA '09: ACM SIGGRAPH ASIA 2009 Posters
December 2009
58 pages
ISBN:9781450379342
DOI:10.1145/1666778
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 16 December 2009

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SA09
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SA09: SIGGRAPH ASIA 2009
December 16 - 19, 2009
Yokohama, Japan

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Overall Acceptance Rate 178 of 869 submissions, 20%

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Cited By

View all
  • (2017)The stretch-engineProceedings of the ACM SIGGRAPH / Eurographics Symposium on Computer Animation10.1145/3099564.3106639(1-2)Online publication date: 28-Jul-2017
  • (2013)A pose space for squash and stretch deformation2013 28th International Conference on Image and Vision Computing New Zealand (IVCNZ 2013)10.1109/IVCNZ.2013.6727010(166-171)Online publication date: Nov-2013

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