Adaptive global visibility sampling

Jií Bittner, Oliver Mattausch, Peter Wonka, Vlastimil Havran, Michael Wimmer

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

In this paper we propose a global visibility algorithm which computes from-region visibility for all view cells simultaneously in a progressive manner. We cast rays to sample visibility interactions and use the information carried by a ray for all view cells it intersects. The main contribution of the paper is a set of adaptive sampling strategies based on ray mutations that exploit the spatial coherence of visibility. Our method achieves more than an order of magnitude speedup compared to per-view cell sampling. This provides a practical solution to visibility preprocessing and also enables a new type of interactive visibility analysis application, where it is possible to quickly inspect and modify a coarse global visibility solution that is constantly refined.

Original languageEnglish (US)
Article number94
JournalACM Transactions on Graphics
Volume28
Issue number3
DOIs
Publication statusPublished - Jul 27 2009

    Fingerprint

Cite this

Bittner, J., Mattausch, O., Wonka, P., Havran, V., & Wimmer, M. (2009). Adaptive global visibility sampling. ACM Transactions on Graphics, 28(3), [94]. https://doi.org/10.1145/1531326.1531400