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Adaptive Global Visibility Sampling

delete2009-07-27
delete17
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OA
AI
B
Bittner, Jiri *
O
Oliver Mattausch
P
Peter Wonka
V
Vlastimil Havran
M
Michael Wimmer
DOI:10.1145/1531326.1531400delete
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摘要

摘要

En 中文
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.
Keyword:
Visibility preprocessing
from-region visibility
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期刊

ACM Transactions on Graphics 封面图
ACM Transactions on Graphics
IF:
9.5
论文数:
4.8K
被引数:
3.6W

机构

A
Arizona State University
学者数:
2.7W
论文数: 2.5W
被引数: 4.2W
C
czech technical university prague
学者数:
6.6K
论文数: 5.3K
被引数: 3
T
Technische Universitat Wien
学者数:
1.3W
论文数: 1.1W
被引数: 21
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引用论文

引用论文

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errReshetov, A; Soupikov, A; Hurley, J
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Guided visibility sampling
err2006-07-01
err25
PREAI
errWonka, Peter; Wimmer, Michael; Zhou, Kaichi; Maierhofer, Stefan; Hesina, Gerd; Reshetov, Alexander
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Ray space factorization for from-region visibility
err2003-07-01
err33
PREAI
errLeyvand, T; Sorkine, O; Cohen-Or, D
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