Publication Details

Ink-and-Ray: Bas-Relief Meshes for Adding Global Illumination Effects to Hand-Drawn Characters

SÝKORA Daniel, KAVAN Ladislav, ČADÍK Martin, JAMRIŠKA Ondřej, JACOBSON Alec, WHITED Brian, SIMMONS Maryann and SORKINE-HORNUNG Olga. Ink-and-Ray: Bas-Relief Meshes for Adding Global Illumination Effects to Hand-Drawn Characters. ACM Transactions on Graphics (TOG), vol. 2014, no. 2, pp. 1-16. ISSN 0730-0301. Available from: http://cadik.posvete.cz
Czech title
Ink-and-Ray: basreliéfové sítě pro přidání globálního osvětlení do ručně kreslených postav
Type
journal article
Language
english
Authors
Sýkora Daniel (ČVUT)
Kavan Ladislav (UPENN)
Čadík Martin, doc. Ing., Ph.D. (DCGM FIT BUT)
Jamriška Ondřej (ČVUT)
Jacobson Alec (ETH)
Whited Brian (WDAS)
Simmons Maryann (WDAS)
Sorkine-Hornung Olga (ETH)
URL
Keywords

cartoons, global illumination, non-photorelasitic rendering, 2D-to-3D conversion, bas-relief

Abstract

We present a new approach for generating global illumination renderings of hand-drawn characters using only a small set of simple annotations. Our system exploits the concept of bas-relief sculptures, making it possible to generate 3D proxies suitable for rendering without requiring side-views or extensive user input. We formulate an optimization process that automatically constructs approximate geometry sufficient to evoke the impression of a consistent 3D shape. The resulting renders provide the richer stylization capabilities of 3D global illumination while still retaining the 2D hand-drawn look-and-feel. We demonstrate our approach on a varied set of hand-drawn images and animations, showing that even in comparison to ground-truth renderings of full 3D objects, our bas-relief approximation is able to produce convincing global illumination effects, including self-shadowing, glossy reflections, and diffuse color bleeding.

Published
2014
Pages
1-16
Journal
ACM Transactions on Graphics (TOG), vol. 2014, no. 2, ISSN 0730-0301
Publisher
Association for Computing Machinery
DOI
UT WoS
000335009900004
EID Scopus
BibTeX
@ARTICLE{FITPUB10568,
   author = "Daniel S\'{y}kora and Ladislav Kavan and Martin \v{C}ad\'{i}k and Ond\v{r}ej Jamri\v{s}ka and Alec Jacobson and Brian Whited and Maryann Simmons and Olga Sorkine-Hornung",
   title = "Ink-and-Ray: Bas-Relief Meshes for Adding Global Illumination Effects to Hand-Drawn Characters",
   pages = "1--16",
   journal = "ACM Transactions on Graphics (TOG)",
   volume = 2014,
   number = 2,
   year = 2014,
   ISSN = "0730-0301",
   doi = "10.1145/2591011",
   language = "english",
   url = "https://www.fit.vut.cz/research/publication/10568"
}
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