Applications of temporal coherence in real-time rendering

Daniel Scherzer
Applications of temporal coherence in real-time rendering
Supervisor: Michael Wimmer
Duration: December 2005 - November 2009

Information

Abstract

Real-time rendering imposes the challenging task of creating a new rendering of an input scene at least 60 times a second. Although computer graphics hardware has made staggering advances in terms of speed and freedom of programmability, there still exist a number of algorithms that are too expensive to be calculated in this time budget, like exact shadows or an exact global illumination solution. One way to circumvent this hard time limit is to capitalize on temporal coherence to formulate algorithms incremental in time.

The main thesis of this work is that temporal coherence is a characteristic of real-time graphics that can be used to redesign well-known rendering methods to become faster, while exhibiting better visual fidelity.

To this end we present our adaptations of algorithms from the fields of exact hard shadows, physically correct soft shadows and fast discrete LOD blending, in which we have successfully incorporated temporal coherence. Additionally, we provide a detailed context of previous work not only in the field of temporal coherence, but also in the respective fields of the presented algorithms.

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BibTeX

@phdthesis{scherzer-thesis,
  title =      "Applications of temporal coherence in real-time rendering",
  author =     "Daniel Scherzer",
  year =       "2009",
  abstract =   "Real-time rendering imposes the challenging task of creating
               a new rendering of an input scene at least 60 times a
               second. Although computer graphics hardware has made
               staggering advances in terms of speed and freedom of
               programmability, there still exist a number of algorithms
               that are too expensive to be calculated in this time budget,
               like exact shadows or an exact global illumination solution.
               One way to circumvent this hard time limit is to capitalize
               on temporal coherence to formulate algorithms incremental in
               time.  The main thesis of this work is that temporal
               coherence is a characteristic of real-time graphics that can
               be used to redesign well-known rendering methods to become
               faster, while exhibiting better visual fidelity.   To this
               end we present our adaptations of algorithms from the fields
               of exact hard shadows, physically correct soft shadows and
               fast discrete LOD blending, in which we have successfully
               incorporated temporal coherence. Additionally, we provide a
               detailed context of previous work not only in the field of
               temporal coherence, but also in the respective fields of the
               presented algorithms.",
  address =    "Favoritenstrasse 9-11/186, A-1040 Vienna, Austria",
  school =     "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology",
  keywords =   "shadows, lod, real-time, image-space",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2009/scherzer-thesis/",
}