Active Strokes: Coherent Line Stylization for Animated 3D Models

Pierre Bénard; Lu Jingwan; Forrester Cole; Adam Finkelstein; Joëlle Thollot

hal-00693453, version 1

Active Strokes: Coherent Line Stylization for Animated 3D Models

Pierre Bénard ()^a^, 1, Lu Jingwan () ², Forrester Cole ()^b^, 3, Adam Finkelstein ()^c^, 2, Joëlle Thollot ()^d^, 1

NPAR 2012 - 10th International Symposium on Non-photorealistic Animation and Rendering (2012) 37-46

Abstract: This paper presents a method for creating coherently animated line drawings that include strong abstraction and stylization effects. These effects are achieved with active strokes: 2D contours that approximate and track the lines of an animated 3D scene. Active strokes perform two functions: they connect and smooth unorganized line samples, and they carry coherent parameterization to support stylized rendering. Line samples are approximated and tracked using active contours ("snakes") that automatically update their arrangment and topology to match the animation. Parameterization is maintained by brush paths that follow the snakes but are independent, permitting substantial shape abstraction without compromising fidelity in tracking. This approach renders complex models in a wide range of styles at interactive rates, making it suitable for applications like games and interactive illustrations.

a – Grenoble University
b – CSAIL MIT
c – Princeton University
d – Institut polytechnique de Grenoble (Grenoble INP)
1: ARTIS (INRIA Grenoble Rhône-Alpes / LJK Laboratoire Jean Kuntzmann)
CNRS : UMR5224 – INRIA – Laboratoire Jean Kuntzmann – Université Joseph Fourier - Grenoble I – Institut National Polytechnique de Grenoble (INPG)
2: Department of Computer Science
Princeton University
3: Computer Science and Artificial Intelligence Laboratory (CSAIL)
Massachussetts Institute of Technology (MIT)

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From: Pierre Bénard <>
Submitted on: Friday, 4 May 2012 14:08:22
Updated on: Wednesday, 6 February 2013 12:33:38

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%% hal-00693453, version 1
%% http://hal.inria.fr/hal-00693453
@inproceedings{benard:hal-00693453,
    hal_id = {hal-00693453},
    url = {http://hal.inria.fr/hal-00693453},
    title = {{Active Strokes: Coherent Line Stylization for Animated 3D Models}},
    author = {B{\'e}nard, Pierre and Jingwan, Lu and Cole, Forrester and Finkelstein, Adam and Thollot, Jo{\"e}lle},
    abstract = {{This paper presents a method for creating coherently animated line drawings that include strong abstraction and stylization effects. These effects are achieved with active strokes: 2D contours that approximate and track the lines of an animated 3D scene. Active strokes perform two functions: they connect and smooth unorganized line samples, and they carry coherent parameterization to support stylized rendering. Line samples are approximated and tracked using active contours ("snakes") that automatically update their arrangment and topology to match the animation. Parameterization is maintained by brush paths that follow the snakes but are independent, permitting substantial shape abstraction without compromising fidelity in tracking. This approach renders complex models in a wide range of styles at interactive rates, making it suitable for applications like games and interactive illustrations.}},
    keywords = {NPR; line drawings; temporal coherence; snakes},
    language = {English},
    affiliation = {ARTIS - INRIA Grenoble Rh{\^o}ne-Alpes / LJK Laboratoire Jean Kuntzmann , Department of Computer Science , Computer Science and Artificial Intelligence Laboratory - CSAIL},
    booktitle = {{NPAR 2012 - 10th International Symposium on Non-photorealistic Animation and Rendering}},
    publisher = {ACM},
    pages = {37-46},
    address = {Annecy, France},
    editor = {Paul Asente and Cindy Grimm },
    note = {Paper session 8: Lines, strokes and textures in 3D },
    audience = {international },
    year = {2012},
    month = Jun,
    pdf = {http://hal.inria.fr/hal-00693453/PDF/paper\_authors.pdf},
}

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