Geometry-dependent lighting

IEEE Transactions on Visualization and Computer Graphics
Chang Ha LeeAmitabh Varshney

Abstract

In this paper, we introduce geometry-dependent lighting that allows lighting parameters to be defined independently and possibly discrepantly over an object or scene based on the local geometry. We present and discuss Light Collages, a lighting design system with geometry-dependent lights for effective feature-enhanced visualization. Our algorithm segments the objects into local surface patches and places lights that are locally consistent but globally discrepant to enhance the perception of shape. We use spherical harmonics for efficiently storing and computing light placement and assignment. We also outline a method to find the minimal number of light sources sufficient to illuminate an object well with our globally discrepant lighting approach.

References

Jan 14, 1988·Nature·V S Ramachandran
Apr 5, 2000·The Journal of Biological Chemistry·P HamelC de Vitry
Feb 8, 2005·Perception·James H ElderDonald MacLean
Mar 18, 2005·Nature·Patrick Cavanagh
Dec 20, 2005·Perception·Yuri OstrovskyPawan Sinha

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Citations

Oct 17, 2009·IEEE Transactions on Visualization and Computer Graphics·Gregory CiprianoMichael Gleicher
Oct 31, 2007·IEEE Transactions on Visualization and Computer Graphics·Stefan Bruckner, Eduard Gröller
Mar 21, 2012·IEEE Transactions on Visualization and Computer Graphics·Lei Wang, Arie E Kaufman
Nov 23, 2016·IEEE Transactions on Visualization and Computer Graphics·Kai LawonnKlaus Hildebrandt

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