Name
Abstract | ||
|---|---|---|
Bidirectionaltexturefunctionsor BTFsaccurately model reflectance variation at a fine (meso-) scale as a func- tion of lighting and viewing direction. BTFs also capture view-dependent visibility variation, also called masking or parallax, but only within surface contours. Mesostructure detail is neglected at silhouettes, so BTF-mapped objects re- tain the coarse shape of the underlying model. WeaugmentBTF rendering toobtainapproximatemeso- scalesilhouettes. Our new representation, the 4D mesostruc- turedistancefunction (MDF), tabulatesthedisplacementfrom a reference frame where a ray first intersects the meso-scale geometry beneath, as a function of ray direction and ray po- sitionalong thatreferenceplane.GivenanMDF, themesostr- ucturesilhouettecanberenderedwithaper-pixeldepthpeel- ing process on graphics hardware, while shading and local parallax is handled by the BTF. Our approach allows real- timerendering,handlescomplex,non-height-field mesostruc- ture, requires that no additional geometry to be sent to the rasterizer other than the mesh triangles, is more compact than textured visibility representations used previously, and for the first time can be easily measured from physical sam- ples. We also adapt the algorithm to capture detailed shad- owscastboth by andonto BTF-mappedsurfaces.Wedemon- strate the efficiency of our algorithm on a variety of BTF data, including real data acquired using our BTF-MDF mea- surement system. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1007/s00371-005-0318-y | The Visual Computer |
Keywords | Field | DocType |
bidirectional texture functions · reflectance and shading models · rendering · shadow algorithms · texture mapping,graphics hardware,bidirectional texture function,texture mapping,reference frame | Computer vision,Texture mapping,Visibility,Parallax,Computer graphics (images),Masking (art),Computer science,Bidirectional texture function,Shadow algorithms,Artificial intelligence,Reflectivity,Rendering (computer graphics) | Journal |
Volume | Issue | ISSN |
21 | 8-10 | 1432-2315 |
Citations | PageRank | References |
8 | 0.53 | 24 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jiaping Wang | 1 | 549 | 27.25 |
| Xin Tong | 2 | 2119 | 127.72 |
| John Snyder | 3 | 2579 | 172.17 |
| Yanyun Chen | 4 | 206 | 19.90 |
| Baining Guo | 5 | 3970 | 194.91 |
| Heung-Yeung Shum | 6 | 10824 | 739.88 |