Help Guide Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse




Journal Article

Practical Shadow Mapping


Brabec,  Stefan
Computer Graphics, MPI for Informatics, Max Planck Society;

Annen,  Thomas
Computer Graphics, MPI for Informatics, Max Planck Society;

Seidel,  Hans-Peter
Computer Graphics, MPI for Informatics, Max Planck Society;

There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available

Brabec, S., Annen, T., & Seidel, H.-P. (2003). Practical Shadow Mapping. Journal of Graphics Tools, 7, 9-18.

Cite as:
In this paper we present several methods that can greatly improve image quality when using the shadow mapping algorithm. Shadow artifacts introduced by shadow mapping are mainly due to low resolution shadow maps and/or the limited numerical precision used when performing the shadow test. These problems especially arise when the light source's viewing frustum, from which the shadow map is generated, is not adjusted to the actual camera view. We show how a tight fitting frustum can be computed such that the shadow mapping algorithm concentrates on the visible parts of the scene and takes advantage of nearly the full available precision. Furthermore, we recommend uniformly spaced depth values in contrast to perspectively spaced depths in order to equally sample the scene seen from the light source.