Publication Details

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

SÝKORA, D.; KAVAN, L.; ČADÍK, M.; JAMRIŠKA, O.; JACOBSON, A.; WHITED, B.; SIMMONS, M.; SORKINE-HORNUNG, O. Ink-and-Ray: Bas-Relief Meshes for Adding Global Illumination Effects to Hand-Drawn Characters. ACM TRANSACTIONS ON GRAPHICS, 2014, vol. 2014, no. 2, p. 1-16. ISSN: 0730-0301.
Czech title
Ink-and-Ray: basreliéfové sítě pro přidání globálního osvětlení do ručně kreslených postav
Type
journal article
Language
English
Authors
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, vol. 2014, no. 2, ISSN 0730-0301
DOI
UT WoS
000335009900004
EID Scopus
BibTeX
@article{BUT111551,
  author="Daniel {Sýkora} and Ladislav {Kavan} and Martin {Čadík} and Ondřej {Jamriška} 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",
  journal="ACM TRANSACTIONS ON GRAPHICS",
  year="2014",
  volume="2014",
  number="2",
  pages="1--16",
  doi="10.1145/2591011",
  issn="0730-0301",
  url="http://cadik.posvete.cz"
}
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