Non-Photorealistic Computer Graphics Library

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Found 7 item(s) authored by "Daniel Sýkora" .

Proceedings Color for Black-and-White Cartoons
Daniel Sýkora, Jan Buriánek, Jiří Žára.
CVUT Workshop, pp. 184--185, Prague, Czech Republic, March, 2004. [BibTeX]

Article Colorization of Black-and-White Cartoons
Daniel Sýkora, Jan Buriánek, Jiří Žára.
Image and Vision Computing, Vol. 23, No. 9, pp. 767-782, September, 2005. [BibTeX]

Master Thesis Inking Old Black-and-White Cartoons
Daniel Sýkora.
Department of Computer Science and Engineering, Faculty of Electrical Engineering, Prague, Czech Republic, January, 2003. [BibTeX]

Article LazyBrush: Flexible Painting Tool for Hand-drawn Cartoons

Author(s): Daniel Sýkora, John Dingliana, Steven Collins.
Article: Computer Graphics Forum, Vol. 28, No. 2, pp. 599--608, 2009.
[BibTeX] [DOI] Find this paper on Google

In this paper we present LazyBrush, a novel interactive tool for painting hand-made cartoon drawings and animations. Its key advantage is simplicity and ?exibility. As opposed to previous custom tailored approaches [SBv05, QWH06] LazyBrush does not rely on style speci?c features such as homogenous regions or pattern continuity yet still offers comparable or even less manual effort for a broad class of drawing styles. In addition to this, it is not sensitive to imprecise placement of color strokes which makes painting less tedious and brings signi?cant time savings in the context cartoon animation. LazyBrush originally stems from requirements analysis carried out with professional ink-and-paint illustrators who established a list of useful features for an ideal painting tool. We incorporate this list into an optimization framework leading to a variant of Potts energy with several interesting theoretical properties. We show how to minimize it ef?ciently and demonstrate its usefulness in various practical scenarios including the ink-and-paint production pipeline.

Proceedings Segmentation of Black-and-White Cartoons
Daniel Sýkora, Jan Buriánek, Jiří Žára.
19th Spring Conference on Computer Graphics (SCCG'03), pp. 223--230, Budmerice, Slovakia, April, 2003. [BibTeX]

Proceedings Sketching Cartoons by Example
Daniel Sýkora, Jan Buriánek, Jiří Žára.
2nd Eurographics Workshop on Sketch-Based Interfaces and Modeling (SBM'05), pp. 27--34, Dublin, Ireland, August, 2005. [BibTeX]

Proceedings Unsupervised Colorization of Black-and-White Cartoons
Daniel Sýkora, Jan Buriánek, Jiří Žára.
3rd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'04), pp. 121--127, Annecy, France, June, 2004. [BibTeX]

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