Casting shadows with approximated object space accuracy by means of a modified Z-buffer

J. van Ee, C.W.A.M. Overveld, van

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Shadows are important in enhancing both the realism and the intelligibility of synthetic 2D images of 3D scenes. In order to determine which part of a scene is in shadow, numerous algorithms have been developed. The Z-buffer shadow algorithm and its descendants have proved to be both efficient and easy to implement. However, in casting shadows, the aliasing introduced by the Z-buffer point sampling is notorious. Therefore a new method that is based on a modification of the Z-buffer has been developed. This method deals with the aliasing problem but preserves the strengths of the Z-buffer algorithm. Moreover, as a side effect, the information stored in the modified Z-buffer allows accurate antialiasing of the resulting image.
Original languageEnglish
Pages (from-to)243-254
Number of pages12
JournalThe Visual Computer
Volume10
Issue number5
DOIs
Publication statusPublished - 1994

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