CGI
2004
IEEE
13 years 8 months ago
2004
IEEE
In this paper we extend the reuse of paths to the shot from a moving light source. In the classical algorithm new paths have to be cast from each new position of a light source. W...
SIGGRAPH
1992
ACM
13 years 8 months ago
1992
ACM
We define the antiumbra and the antipenumbra of a convex area light source shining through a sequence of convex areal holes in three dimensions. The antiumbra is the volume from w...
PG
2003
IEEE
13 years 9 months ago
2003
IEEE
Interactive visualization of complex, real-world light sources has so far not been feasible. In this paper, we present an hardware accelerated direct lighting algorithm based on a...
ICBA
2004
Springer
13 years 9 months ago
2004
Springer
This paper proposes a hardware-based line feature enhancement approach that uses a palmprint acquisition device fitted with a time-sharing light source. When capturing images, two ...
WACV
2005
IEEE
13 years 10 months ago
2005
IEEE
This paper presents an approach for creating realistic shadows of objects composited into a novel background. Existing techniques either do not deal with the shadows or require th...
SIBGRAPI
2006
IEEE
13 years 10 months ago
2006
IEEE
This paper presents a novel image-based approach to render plausible soft shadows for complex dynamic scenes with rectangular light sources. The algorithm's performance is mo...
IH
2007
Springer
13 years 10 months ago
2007
Springer
Abstract. When creating a digital composite of two people, it is difficult to exactly match the lighting conditions under which each individual was originally photographed. In many...
PG
2007
IEEE
13 years 10 months ago
2007
IEEE
We describe a new, analytic approximation to the airlight integral from scattering media whose density is modeled as a sum of Gaussians. The approximation supports real-time rende...
ICRA
2007
IEEE
13 years 10 months ago
2007
IEEE
— In this paper, we propose an original approach to control camera position and/or lighting conditions in an environment using image gradient information. Our goal is to ensure a...
ISMAR
2008
IEEE
13 years 10 months ago
2008
IEEE
Even though shadows are important for photometric consistency in Mixed Reality (MR) [1]. When human cannot perceive the inconsistency of artificial shadows which are not physicall...