Spherical Harmonic Lighting of Wavelength-Dependent Phenomena
| dc.contributor.author | Lindsay, Clifford | en_US |
| dc.contributor.author | Agu, Emmanuel | en_US |
| dc.contributor.editor | John Dingliana and Fabio Ganovelli | en_US |
| dc.date.accessioned | 2015-07-19T16:45:42Z | |
| dc.date.available | 2015-07-19T16:45:42Z | |
| dc.date.issued | 2005 | en_US |
| dc.description.abstract | Rendering of objects that exhibit iridescence has previously been limited to simple lighting conditions generated from a few point or directional lights. We extend this idea by modeling light interference as a Bidirectional Re- flectance Distribution Function (BRDF) and precomputing the physically based surface response to hemisphere lighting in terms of a low order spherical harmonic basis. Parameterizing by view direction, we can store the light interference effect in a 2D texture map, where each entry contains a vector of spherical harmonic basis function coefficients. Our technique achieves a full spectral representation of interference color by maintaining the spherical harmonic basis in terms of Spectral Power Distribution (SPD) instead of a color-based format such as RGB. In addition, we demonstrate that our approach is amenable to current graphics hardware and can render at real-time frame rates. | en_US |
| dc.description.sectionheaders | Real-Time Rendering | en_US |
| dc.description.seriesinformation | EG Short Presentations | en_US |
| dc.identifier.doi | 10.2312/egs.20051039 | en_US |
| dc.identifier.pages | 121-124 | en_US |
| dc.identifier.uri | https://doi.org/10.2312/egs.20051039 | en_US |
| dc.publisher | The Eurographics Association | en_US |
| dc.title | Spherical Harmonic Lighting of Wavelength-Dependent Phenomena | en_US |
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