Interactive reflections on curved objects

Eyal Ofek*, Ari Rappoport

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

49 Scopus citations

Abstract

Global view-dependent illumination phenomena, in particular reflections, greatly enhance the realism of computer-generated imagery. Current interactive rendering methods do not provide satisfactory support for reflections on curved objects. In this paper we present a novel method for interactive computation of reflections on curved objects. We transform potentially reflected scene objects according to reflectors, to generate virtual objects. These are rendered by the graphics system as ordinary objects, creating a reflection image that is blended with the primary image. Virtual objects are created by tessellating scene objects and computing a virtual vertex for each resulting scene vertex. Virtual vertices are computed using a novel space subdivision, the reflection subdivision. For general polygonal mesh reflectors, we present an associated approximate acceleration scheme, the explosion map. For specific types of objects (e.g., linear extrusions of planar curves) the reflection subdivision can be reduced to a 2-D one that is utilized more accurately and efficiently.

Original languageAmerican English
Pages333-342
Number of pages10
StatePublished - 1998
EventProceedings of the 1998 Annual Conference on Computer Graphics, SIGGRAPH - Orlando, FL, USA
Duration: 19 Jul 199824 Jul 1998

Conference

ConferenceProceedings of the 1998 Annual Conference on Computer Graphics, SIGGRAPH
CityOrlando, FL, USA
Period19/07/9824/07/98

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