Spectralization: Reconstructing spectra from sparse data

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dc.contributor.authorRump, Martinen_US
dc.contributor.authorKlein, Reinharden_US
dc.date.accessioned2015-02-23T16:57:41Z
dc.date.available2015-02-23T16:57:41Z
dc.date.issued2010en_US
dc.description.abstractTraditional RGB reflectance and light data suffers from the problem of metamerism and is not suitable for rendering purposes where exact color reproduction under many different lighting conditions is needed. Nowadays many setups for cheap and fast acquisition of RGB or similar trichromatic datasets are available. In contrast to this, multi- or even hyper-spectral measurements require costly hardware and have severe limitations in many cases. In this paper, we present an approach to combine efficiently captured RGB data with spectral data that can be captured with small additional effort for example by scanning a single line of an image using a spectral line-scanner. Our algorithm can infer spectral reflectances and illumination from such sparse spectral and dense RGB data. Unlike other approaches, our method reaches acceptable perceptual errors with only three channels for the dense data and thus enables further use of highly efficient RGB capture systems. This way, we are able to provide an easier and cheaper way to capture spectral textures, BRDFs and environment maps for the use in spectral rendering systems.en_US
dc.description.number4en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume29en_US
dc.identifier.doi10.1111/j.1467-8659.2010.01730.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages1347-1354en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2010.01730.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titleSpectralization: Reconstructing spectra from sparse dataen_US
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EGSR10: 21th Eurographics Symposium on Rendering