Light Warping for Enhanced Surface Depiction
ACM Transaction on Graphics (Proceedings of SIGGRAPH 2009), Volume 28, Number 3 - Aug 2009
Recent research on the human visual system shows that our perception of object shape relies in part on compression and stretching
of the reflected lighting environment onto its surface. We use this
property to enhance the shape depiction of 3D objects by locally
warping the environment lighting around main surface features.
Contrary to previous work, which require specific illumination, material characteristics and/or stylization choices, our approach en-
hances surface shape without impairing the desired appearance. Thanks to our novel local shape descriptor, salient surface features are explicitly extracted in a view-dependent fashion at var-
ious scales without the need of any pre-process. We demonstrate
our system on a variety of rendering settings, using object materials
ranging from diffuse to glossy, to mirror or refractive, with direct
or global illumination, and providing styles that range from photorealistic to non-photorealistic. The warping itself is very fast to
compute on modern graphics hardware, enabling real-time performance in direct illumination scenarios.
Images and movies
See also
Source code
Source code for the main shaders used in the Light Warping approach are available in this ZIP archive.They are released under the CeCILL B license (French license, English License).
For more demos and software, please go to Animare download page.
Video stream
Light Warping for Enhanced Surface Depiction from Animaré on Vimeo.
BibTex references
@Article{VPBGS09,
author = "Vergne, Romain and Pacanowski, Romain and Barla, Pascal and Granier, Xavier and Schlick, Christophe",
title = "Light Warping for Enhanced Surface Depiction",
journal = "ACM Transaction on Graphics (Proceedings of SIGGRAPH 2009)",
number = "3",
volume = "28",
month = "Aug",
year = "2009",
keywords = "expressive rendering, shading, perception, enhancement, rendering",
url = "http://iparla.labri.fr/publications/2009/VPBGS09"
}
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