Secondary motion for performed 2D animation

Nora S. Willett, Wilmot Li, Jovan Popović, Floraine Berthouzoz, Adam Finkelstein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

When bringing animated characters to life, artists often augment the primary motion of a figure by adding secondary animation - subtle movement of parts like hair, foliage or cloth that complements and emphasizes the primary motion. Traditionally, artists add secondary motion to animated illustrations only through arduous manual effort, and often eschew it entirely. Emerging "live" performance applications allow both novices and experts to perform the primary motion of a character, but only a virtuoso performer could manage the degrees of freedom needed to specify both primary and secondary motion together. This paper introduces physically-inspired rigs that propagate the primary motion of layered, illustrated characters to produce plausible secondary motion. These composable elements are rigged and controlled via a small number of parameters to produce an expressive range of effects. Our approach supports a variety of the most common secondary effects, which we demonstrate with an assortment of characters of varying complexity.

Original languageEnglish (US)
Title of host publicationUIST 2017 - Proceedings of the 30th Annual ACM Symposium on User Interface Software and Technology
PublisherAssociation for Computing Machinery, Inc
Pages97-108
Number of pages12
ISBN (Electronic)9781450349819
DOIs
StatePublished - Oct 20 2017
Event30th Annual ACM Symposium on User Interface Software and Technology, UIST 2017 - Quebec City, Canada
Duration: Oct 22 2017Oct 25 2017

Publication series

NameUIST 2017 - Proceedings of the 30th Annual ACM Symposium on User Interface Software and Technology

Other

Other30th Annual ACM Symposium on User Interface Software and Technology, UIST 2017
CountryCanada
CityQuebec City
Period10/22/1710/25/17

All Science Journal Classification (ASJC) codes

  • Computer Graphics and Computer-Aided Design
  • Human-Computer Interaction
  • Software

Keywords

  • 2D animation
  • Constrained dynamics
  • Live performance
  • Plausible physics
  • Secondary motion

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  • Cite this

    Willett, N. S., Li, W., Popović, J., Berthouzoz, F., & Finkelstein, A. (2017). Secondary motion for performed 2D animation. In UIST 2017 - Proceedings of the 30th Annual ACM Symposium on User Interface Software and Technology (pp. 97-108). (UIST 2017 - Proceedings of the 30th Annual ACM Symposium on User Interface Software and Technology). Association for Computing Machinery, Inc. https://doi.org/10.1145/3126594.3126641