Selecting Effective Occluders for Visibility Culling
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Date
2000
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Eurographics Association
Abstract
This paper deals with the problem of identifying effective occluders for visibility culling. The solid-angle metric is commonly used for measuring the potential significance of occluders from a single viewpoint. In this paper, we show that it does not extend properly to from-region occlusion calculations. We propose to measure the effectiveness of an occluder by means of the size of its umbra. We first present an analytic object-space algorithm to accurately compute this measure. We then define an approximation which reflects the effectiveness of an occluder, and introduce a hardware-assisted algorithm to rapidly compute it.
Description
@inproceedings{:10.2312/egs.20001009,
booktitle = {Eurographics 2000 - Short Presentations},
editor = {},
title = {{Selecting Effective Occluders for Visibility Culling}},
author = {Koltun, Vladlen and Cohen-Or, Daniel},
year = {2000},
publisher = {Eurographics Association},
ISSN = {1017-4656},
ISBN = {},
DOI = {/10.2312/egs.20001009}
}