Publication Details
Ink-and-Ray: Bas-Relief Meshes for Adding Global Illumination Effects to Hand-Drawn Characters
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)
cartoons, global illumination, non-photorelasitic rendering, 2D-to-3D conversion, bas-relief
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.
@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"
}