Progressive Previewing of Ray-Traced Images Using Image Plane Disconinuity Meshing

Frédéric H. Pighin, Dani Lischinski, David Salesin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


This paper presents a new method for progressively previewing a ray-traced image while it is being computed. Our method constructs and incrementally updates a constrained Delaunay triangulation of the image plane. The points in the triangulation correspond to all of the image samples that have been computed by the ray tracer, and the constraint edges correspond to various important discontinuity edges in the image. The triangulation is displayed using hardware Gouraud shading, yielding a piecewise-linear approximation to the final image. Texture mapped surfaces, as well as other regions in the image that are not well approximated by linear interpolation, are handled with the aid of hardware texture mapping.
Original languageEnglish
Title of host publicationRendering Techniques ’97
Subtitle of host publicationProceedings of the Eurographics Workshop in St. Etienne, France, June 16–18, 1997
Number of pages11
ISBN (Electronic)978-3-7091-6858-5
ISBN (Print)978-3-211-83001-7
StatePublished - 1997

Publication series

ISSN (Print)0946-2767


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