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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/7990

Title: Highly stylised animation
Authors: DI FIORE, Fabian
Patterson, John
Willis, Philip
Issue Date: 2008
Publisher: SPRINGER
Citation: VISUAL COMPUTER, 24(2). p. 105-123
Abstract: In this paper we argue for our NPAR system as an effective 2D alternative to most NPR research, which is focused on frame coherent stylised rendering of 3D models. Our approach gives a highly stylised look to images without the support of 3D models. Nevertheless, they still behave as though they are animated by drawing, which they are. First, a stylised brush tool is used to freely draw extreme poses of characters. Each character is built of 2D drawn brush strokes which are manually grouped into layers. Each layer is assigned its place in a drawing hierarchy called a hierarchical display model (HDM). Next, multiple HDMs are created for the same character, each corresponding to a specific view. A collection of HDMs essentially reintroduces some correspondence information to the 2D drawings needed for inbetweening and, in effect, eliminates the need for a true 3D model. Once the models are composed the animator starts by defining keyframes from extreme poses in time. Next, brush stroke trajectories defined by the keyframe HDMs are inbetweened automatically across intermediate frames. Finally, each HDM of each generated inbetween frame is traversed and all elements are drawn one on another from back to front. Our techniques support highly rendered styles which are particularly difficult to animate by traditional means including the 'airbrushed', scraperboard, watercolour, Gouache, 'ink-wash', pastel, and the 'crayon' styles. In addition, we describe the data path to be followed to create highly stylised animations by incorporating real footage. We believe our system offers a new fresh perspective on computer-aided animation production and associated tools.
Notes: Hasselt Univ, Expertise Ctr Digital Media, Transnationale Univ Limburg, B-3590 Diepenbeek, Belgium. Univ Glasgow, Dept Comp Sci, Glasgow G12 8QQ, Lanark, Scotland. Univ Bath, Dept Comp Sci, Media Technol Res Ctr, Bath BA2 7AY, Avon, England.Di Fiore, F, Hasselt Univ, Expertise Ctr Digital Media, Transnationale Univ Limburg, Wetenschapspk 2, B-3590 Diepenbeek, Belgium.fabian.difiore@uhasselt.be frank.vanreeth@uhasselt.be jwp@dcs.gla.ac.uk P.J.Willis@bath.ac.uk
URI: http://hdl.handle.net/1942/7990
DOI: 10.1007/s00371-007-0189-5
ISI #: 000252486200004
ISSN: 0178-2789
Category: A1
Type: Journal Contribution
Validation: ecoom, 2009
Appears in Collections: Research publications

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