Abstract
Rendering of intricately shaped objects that are soft or cluttered is difficult because we cannot accurately acquire their complete geometry. Since their geometry varies drastically, modeling them using fixed facets can lead to severe artifacts when viewed from singular directions. In this paper, we propose a novel modeling method, "microfacet billboarding," which uses view-dependent "microfacets" with view-dependent textures. The facets discretely approximate the geometry of the object and are aligned perpendicular to the viewing direction. The texture of each facet is selected from the most suitable texture images according to the viewpoint. Microfacet billboarding can render intricate geometry from various viewpoints. We first describe the basic algorithm of microfacet billboarding. Also, we predict artifacts generated due to the use of discrete facets and we analyze the necessary sampling interval of the geometry and texture for regarding the artifacts as negligible. In addition to the modeling method, we have implemented a real-time renderer by a hardware-accelerated technique. To evaluate the efficiency of our method, we compared it with traditional texture mapping to a mesh model, and showed that our method has a great advantage over the former in rendering intricately shaped objects.
| Original language | English |
|---|---|
| Title of host publication | Eurographics Workshop on Rendering |
| Editors | S. Gibson, P. Debevec |
| Publisher | Association for Computing Machinery (ACM) |
| Pages | 169-179 |
| Number of pages | 11 |
| ISBN (Print) | 1581135343, 9781581135343 |
| Publication status | Published - Jan 1 2002 |
| Externally published | Yes |
| Event | 13th Eurographics Workshop on Rendering - Pisa, Italy Duration: Jun 26 2002 → Jun 28 2002 |
Publication series
| Name | Eurographics Workshop on Rendering |
|---|
Other
| Other | 13th Eurographics Workshop on Rendering |
|---|---|
| Country | Italy |
| City | Pisa |
| Period | 6/26/02 → 6/28/02 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Microfacet billboarding. / Yamazaki, Shuntaro; Sagawa, Ryusuke; Kawasaki, Hiroshi; Ikeuchi, Katsushi; Sakauchi, Masao.
Eurographics Workshop on Rendering. ed. / S. Gibson; P. Debevec. Association for Computing Machinery (ACM), 2002. p. 169-179 (Eurographics Workshop on Rendering).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Microfacet billboarding
AU - Yamazaki, Shuntaro
AU - Sagawa, Ryusuke
AU - Kawasaki, Hiroshi
AU - Ikeuchi, Katsushi
AU - Sakauchi, Masao
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Rendering of intricately shaped objects that are soft or cluttered is difficult because we cannot accurately acquire their complete geometry. Since their geometry varies drastically, modeling them using fixed facets can lead to severe artifacts when viewed from singular directions. In this paper, we propose a novel modeling method, "microfacet billboarding," which uses view-dependent "microfacets" with view-dependent textures. The facets discretely approximate the geometry of the object and are aligned perpendicular to the viewing direction. The texture of each facet is selected from the most suitable texture images according to the viewpoint. Microfacet billboarding can render intricate geometry from various viewpoints. We first describe the basic algorithm of microfacet billboarding. Also, we predict artifacts generated due to the use of discrete facets and we analyze the necessary sampling interval of the geometry and texture for regarding the artifacts as negligible. In addition to the modeling method, we have implemented a real-time renderer by a hardware-accelerated technique. To evaluate the efficiency of our method, we compared it with traditional texture mapping to a mesh model, and showed that our method has a great advantage over the former in rendering intricately shaped objects.
AB - Rendering of intricately shaped objects that are soft or cluttered is difficult because we cannot accurately acquire their complete geometry. Since their geometry varies drastically, modeling them using fixed facets can lead to severe artifacts when viewed from singular directions. In this paper, we propose a novel modeling method, "microfacet billboarding," which uses view-dependent "microfacets" with view-dependent textures. The facets discretely approximate the geometry of the object and are aligned perpendicular to the viewing direction. The texture of each facet is selected from the most suitable texture images according to the viewpoint. Microfacet billboarding can render intricate geometry from various viewpoints. We first describe the basic algorithm of microfacet billboarding. Also, we predict artifacts generated due to the use of discrete facets and we analyze the necessary sampling interval of the geometry and texture for regarding the artifacts as negligible. In addition to the modeling method, we have implemented a real-time renderer by a hardware-accelerated technique. To evaluate the efficiency of our method, we compared it with traditional texture mapping to a mesh model, and showed that our method has a great advantage over the former in rendering intricately shaped objects.
UR - http://www.scopus.com/inward/record.url?scp=0036980247&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036980247&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0036980247
SN - 1581135343
SN - 9781581135343
T3 - Eurographics Workshop on Rendering
SP - 169
EP - 179
BT - Eurographics Workshop on Rendering
A2 - Gibson, S.
A2 - Debevec, P.
PB - Association for Computing Machinery (ACM)
ER -