An Adaptive Metric for BRDF Appearance Matching
| dc.contributor.author | Bieron, James | en_US |
| dc.contributor.author | Peers, Pieter | en_US |
| dc.contributor.editor | Klein, Reinhard and Rushmeier, Holly | en_US |
| dc.date.accessioned | 2020-08-23T17:39:14Z | |
| dc.date.available | 2020-08-23T17:39:14Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | Image-based BRDF matching is a special case of inverse rendering, where the parameters of a BRDF model are optimized based on a photograph of a homogeneous material under natural lighting. Using a perceptual image metric, directly optimizing the difference between a rendering and a reference image can provide a close visual match between the model and reference material. However, perceptual image metrics rely on image-features and thus require full resolution renderings that can be costly to produce especially when embedded in a non-linear search procedure for the optimal BRDF parameters. Using a pixel-based metric, such as the squared difference, can approximate the image error from a small subset of pixels. Unfortunately, pixel-based metrics are often a poor approximation of human perception of the material's appearance. We show that comparable quality results to a perceptual metric can be obtained using an adaptive pixel-based metric that is optimized based on the appearance similarity of the material. As the core of our adaptive metric is pixel-based, our method is amendable to imagesubsampling, thereby greatly reducing the computational cost. | en_US |
| dc.description.sectionheaders | Acquiring Accurate Input | |
| dc.description.seriesinformation | Workshop on Material Appearance Modeling | |
| dc.identifier.doi | 10.2312/mam.20201137 | |
| dc.identifier.isbn | 978-3-03868-108-3 | |
| dc.identifier.issn | 2309-5059 | |
| dc.identifier.pages | 1-4 | |
| dc.identifier.uri | https://doi.org/10.2312/mam.20201137 | |
| dc.identifier.uri | https://diglib.eg.org:443/handle/10.2312/mam20201137 | |
| dc.publisher | The Eurographics Association | en_US |
| dc.title | An Adaptive Metric for BRDF Appearance Matching | en_US |
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