Information
- Publication Type: Technical Report
- Workgroup(s)/Project(s): not specified
- Date: January 2001
- Number: TR-186-2-01-04
- Keywords: radiance estimation, photon map, global illumination
Abstract
We present a new method for the simulation of global illumination by utilization of a photon map. It uses an advanced radiance estimation which, in contrast to classical nearest neighbor area estimation, does not assume that the nearest neighbor photons lie in one plane or that they are uniformly distributed around the illuminated point. This allows us to correcly handle indirect illumination, eg. caustics, at edges and corners of objects without causing illumination artefacts in the vicinity of the edges and corners. We show how high quality results can be achieved by directly visualizing this illumination estimate without the usual low frequency noise of photon maps and without requiring a very large photon map.Additional Files and Images
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@techreport{Hey-2001-Glo, title = "Global Illumination with Photon Map Compensation", author = "Heinrich Hey and Werner Purgathofer", year = "2001", abstract = "We present a new method for the simulation of global illumination by utilization of a photon map. It uses an advanced radiance estimation which, in contrast to classical nearest neighbor area estimation, does not assume that the nearest neighbor photons lie in one plane or that they are uniformly distributed around the illuminated point. This allows us to correcly handle indirect illumination, eg. caustics, at edges and corners of objects without causing illumination artefacts in the vicinity of the edges and corners. We show how high quality results can be achieved by directly visualizing this illumination estimate without the usual low frequency noise of photon maps and without requiring a very large photon map.", month = jan, number = "TR-186-2-01-04", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", institution = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", note = "human contact: technical-report@cg.tuwien.ac.at", keywords = "radiance estimation, photon map, global illumination", URL = "https://www.cg.tuwien.ac.at/research/publications/2001/Hey-2001-Glo/", }