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Takustrae 7 D-14195 Berlin-Dahlem
 

Summary: Takustraße 7
D-14195 Berlin-Dahlem
Germany
Konrad-Zuse-Zentrum
f¨ur Informationstechnik Berlin
ANDREA KRATZ, JAN REININGHAUS,
MARKUS HADWIGER, INGRID HOTZ
Adaptive Screen-Space Sampling for
Volume Ray-Casting
ZIB-Report 11-04 (February 2011)
/ Adaptive Screen-Space Sampling for Volume Ray-Casting 2
Adaptive Screen-Space Sampling for Volume Ray-Casting
Abstract
This work is concerned with adaptive screen-space sampling for volume ray-casting. The goal is to reduce the
number of rays being cast into the scene and, thus, the overall number of sampling points. We guarantee reliable
images through explicit error control using an error estimator that is founded in the field of finite element methods
(FEM). FEM theory further provides a well-founded theory to prove the efficiency of the presented algorithm via
convergence analysis. We, therefore, compare the convergence behavior of our method against uniform subdivi-
sions and a refinement scheme that was presented in the context of CPU volume ray-casting [Lev90]. Minimizing
the number of sampling points is of interest for rendering large datasets where each evaluation might need an ex-

  

Source: Andrzejak, Artur - Konrad-Zuse-Zentrum für Informationstechnik Berlin

 

Collections: Computer Technologies and Information Sciences