A Compact Representation for Fluorescent Spectral Data
| dc.contributor.author | Hua, Qingqin | en_US |
| dc.contributor.author | Fichet, Alban | en_US |
| dc.contributor.author | Wilkie, Alexander | en_US |
| dc.contributor.editor | Bousseau, Adrien and McGuire, Morgan | en_US |
| dc.date.accessioned | 2021-07-12T12:13:48Z | |
| dc.date.available | 2021-07-12T12:13:48Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | We propose a technique to efficiently importance sample and store fluorescent spectral data. Fluorescence behaviour is properly represented as a re-radiation matrix: for a given input wavelength, this matrix indicates how much energy is re-emitted at all other wavelengths. However, such a 2D representation has a significant memory footprint, especially when a scene contains a high number of fluorescent objects, or fluorescent textures. We propose to use Gaussian Mixture Domain to model re-radiation, which allows us to significantly reduce the memory footprint. Instead of storing the full matrix, we work with a set of Gaussian parameters that also allow direct importance sampling. When accuracy is a concern, one can still use the re-radiation matrix data, and just benefit from importance sampling provided by the Gaussian Mixture. Our method is useful when numerous fluorescent materials are present in a scene, an in particular for textures with fluorescent components. | en_US |
| dc.description.sectionheaders | Spectral Rendering | |
| dc.description.seriesinformation | Eurographics Symposium on Rendering - DL-only Track | |
| dc.identifier.doi | 10.2312/sr.20211305 | |
| dc.identifier.isbn | 978-3-03868-157-1 | |
| dc.identifier.issn | 1727-3463 | |
| dc.identifier.pages | 225-234 | |
| dc.identifier.uri | https://doi.org/10.2312/sr.20211305 | |
| dc.identifier.uri | https://diglib.eg.org:443/handle/10.2312/sr20211305 | |
| dc.publisher | The Eurographics Association | en_US |
| dc.subject | Computing methodologies | |
| dc.subject | Reflectance modeling | |
| dc.title | A Compact Representation for Fluorescent Spectral Data | en_US |
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