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SIAMJO
2008
144views more  SIAMJO 2008»
13 years 7 months ago
Embedded in the Shadow of the Separator
Eigenvectors to the second smallest eigenvalue of the Laplace matrix of a graph, also known as Fiedler vectors, are the basic ingredient in spectral graph partitioning heuristics....
Frank Göring, Christoph Helmberg, Markus Wapp...
JGTOOLS
2007
91views more  JGTOOLS 2007»
13 years 7 months ago
Separating-Plane Perspective Shadow Mapping
This paper proposes a real-time hybrid solution between standard shadow mapping and any of the current perspective shadow mapping based methods. Existing methods are known to have...
Morten S. Mikkelsen
CGF
2005
106views more  CGF 2005»
13 years 7 months ago
Hierarchical Penumbra Casting
We present a novel algorithm for rendering physically-based soft shadows in complex scenes. Instead of casting shadow rays, we place both the points to be shaded and the samples o...
Samuli Laine, Timo Aila
WSCG
2004
189views more  WSCG 2004»
13 years 9 months ago
Hardware Accelerated Soft Shadows using Penumbra Quads
Shadow mapping is a commonly used technique for generating hard shadows in real time. However, existing shadow map based algorithms cannot render full soft shadows penumbras onto ...
Jukka Arvo, Jan Westerholm
ACCV
2006
Springer
14 years 1 months ago
Markovian Framework for Foreground-Background-Shadow Separation of Real World Video Scenes
Abstract. In this paper we give a new model for foreground-background-shadow separation. Our method extracts the faithful silhouettes of foreground objects even if they have partly...
Csaba Benedek, Tamás Szirányi