23 search results - page 2 / 5 » Bidirectional Importance Sampling for Direct Illumination |
ICCV
2001
IEEE
14 years 6 months ago
2001
IEEE
Capturing surface appearance is important for a large number of applications. Appearance of real world surfaces is dif?cult to model as it varies with the direction of illuminatio...
CVPR
1998
IEEE
14 years 6 months ago
1998
IEEE
Image texture can arise not only from surface albedo variations (2D texture) but also from surface height variations (3D texture). Since the appearance of 3D texture depends on th...
ICIAR
2004
Springer
13 years 10 months ago
2004
Springer
The bidirectional texture function (BTF) describes rough texture appearance variations due to varying illumination and viewing conditions. Such a function consists of thousands of ...
SIGGRAPH
1991
ACM
13 years 8 months ago
1991
ACM
A general light transfer simulation algorithm for environments composed of materials with arbitrary reflectance functions is presented. This algorithm removes the previous practic...
CGF
2008
13 years 5 months ago
2008
The visibility function in direct illumination describes the binary visibility over a light source, e.g., an environment map. Intuitively, the visibility is often strongly correla...