Non-Photorealistic Computer Graphics Library

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Found 6 item(s) authored by "Pascal Barla" Find Author on Google.

Proceedings Geometric Clustering for Line Drawing Simplification
Pascal Barla, Joëlle Thollot, François X. Sillion.
Siggraph technical sketch: SIGGRAPH'2005, 2005. [BibTeX]

Proceedings Geometric Clustering for Line Drawing Simplification
Pascal Barla, Joëlle Thollot, François X. Sillion.
Proceedings of Eurographics Symposium on Rendering (EGSR'05), pp. 183--192, Konstanz, Germany, June 29 - July 1, 2005. [BibTeX]

Article N-way morphing for 2D animation

Author(s): William Baxter, Pascal Barla, Ken Anjyo.
Article: Computer Animation and Virtual Worlds, Vol. 20, No. 2-3, pp. 79--87, 2009.
[BibTeX] [DOI] Find this paper on Google

Abstract:
We present a novel approach to the creation of varied animations from a small set of simple 2D input shapes. Instead of providing a new 2D shape for each keyframe of an animation sequence, we interpolate between a few example shapes in a reduced pose-space. Similar approaches have been presented in the past, but were restricted in the types of input or range of deformations allowed. In order to address these limitations, we reformulate the problem as an N-way morphing process on 2D input bitmap or vector graphics. Our formulation includes an N-way mapping technique, an efficient, rigidity preserving nonlinear blending function, improved extrapolation and a novel scattered data interpolation technique to manage the reduced pose-space. The resulting animations are correlated to paths in the reduced pose-space, allowing users to intuitively and interactively control temporal behaviours with simple gestures. We demonstrate our techniques in several example animations.

PhD Thesis Representation and acquisition models for expressive rendering
Pascal Barla.
Institut National Polytechnique de Grenoble, 2006. [BibTeX]

Article Stroke Pattern Analysis and Synthesis
Pascal Barla, Simon Breslav, Joëlle Thollot, François X. Sillion, Lee Markosian.
Computer Graphics Forum, Vol. 25, No. 3, pp. 663--671, 2006. [BibTeX]

Proceedings X-Toon: An Extended Toon Shader
Pascal Barla, Joëlle Thollot, Lee Markosian.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 127--132, New York, NY, USA, June, ACM Press, 2006. [BibTeX]

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