Perceptually Motivated BRDF Comparison using Single Image
| dc.contributor.author | Havran, Vlastimil | en_US |
| dc.contributor.author | Filip, Jiri | en_US |
| dc.contributor.author | Myszkowski, Karol | en_US |
| dc.contributor.editor | Elmar Eisemann and Eugene Fiume | en_US |
| dc.date.accessioned | 2016-06-17T14:08:58Z | |
| dc.date.available | 2016-06-17T14:08:58Z | |
| dc.date.issued | 2016 | en_US |
| dc.description.abstract | Surface reflectance of real-world materials is now widely represented by the bidirectional reflectance distribution function (BRDF) and also by spatially varying representations such as SVBRDF and the bidirectional texture function (BTF). The raw surface reflectance measurements are typically compressed or fitted by analytical models, that always introduce a certain loss of accuracy. For its evaluation we need a distance function between a reference surface reflectance and its approximate version. Although some of the past techniques tried to reflect the perceptual sensitivity of human vision, they have neither optimized illumination and viewing conditions nor surface shape. In this paper, we suggest a new image-based methodology for comparing different anisotropic BRDFs. We use optimization techniques to generate a novel surface which has extensive coverage of incoming and outgoing light directions, while preserving its features and frequencies that are important for material appearance judgments. A single rendered image of such a surface along with simultaneously optimized lighting and viewing directions leads to the computation of a meaningful BRDF difference, by means of standard image difference predictors. A psychophysical experiments revealed that our surface provides richer information on material properties than the standard surfaces often used in computer graphics, e.g., sphere or blob. | en_US |
| dc.description.number | 4 | en_US |
| dc.description.sectionheaders | Capturing Nature | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.description.volume | 35 | en_US |
| dc.identifier.doi | 10.1111/cgf.12944 | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.pages | 001-012 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/cgf.12944 | en_US |
| dc.publisher | The Eurographics Association and John Wiley & Sons Ltd. | en_US |
| dc.subject | I.3.3 [Computer Graphics] | en_US |
| dc.subject | Picture/Image Generation | en_US |
| dc.subject | Line and curve generation | en_US |
| dc.title | Perceptually Motivated BRDF Comparison using Single Image | en_US |