Name
Abstract | ||
|---|---|---|
One of the most important criticisms that can be made concerning synthesized images is the brand new and too clean aspect
of objects. Surface color modifications can be used to introduce dirtiness or other aging-linked characteristics. Also, techniques
such as bump or displacement mapping allow users to improve surface aspects by introducing geometrical perturbations. In parallel,
the bidirectional reflectance distribution function (BRDF) is a crucial factor in achieving a high degree of realism. It turns
out that surfaces are very often covered by defects such as scratches that are related to both textures and BRDFs due to their
size. Scratches do not always affect the apparent geometry but nevertheless can remain strongly visible. None of the previously
mentioned methods is suited for rendering these defects efficiently. We propose a new method, based on extensions to existing
BRDFs and classical 2D texture mapping techniques, to render efficiently individually visible scratches. We use physical measurements
on "real objects" to derive an accurate geometric model of scratches at small scale range (roughness scale), and we introduce
a new geometric level between bump mapping and BRDFs. Beyond providing graphical results closely matching real cases, our
method opens the way to a new class of considerations in computer graphics based on defects that require the coupling of both
BRDFs and texturing techniques.
|
Year | DOI | Venue |
|---|---|---|
2001 | 10.1007/s003710000093 | The Visual Computer |
Keywords | Field | DocType |
physical measurements,realistic rendering,brdfs,texture mapping correspondence to: s. merillou,surface scratches,bidirectional reflectance distribution function,geometric model,computer graphic,texture mapping | Texture mapping,Computer vision,Projective texture mapping,Computer graphics (images),3D rendering,Computer science,Artificial intelligence,Rendering (computer graphics) | Journal |
Volume | Issue | ISSN |
17 | 1 | 0178-2789 |
Citations | PageRank | References |
14 | 0.80 | 26 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Stéphane Mérillou | 1 | 160 | 13.53 |
| Jean-michel Dischler | 2 | 386 | 34.69 |
| Djamchid Ghazanfarpour | 3 | 283 | 30.78 |