Fast approximate visible set determination for point sample clouds

Authors:
Stephan Mantler;Anton L. Fuhrmann
Affiliations:
VRVis Center for Virtual Reality and Visualization;VRVis Center for Virtual Reality and Visualization
Venue:
EGVE '03 Proceedings of the workshop on Virtual environments 2003
Year:
2003

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Abstract

We present a fast, efficient method to determine approximate visible sets for vegetation rendered as point sample clouds. A hardware accelerated preprocessing step is used to determine exact visibility for a selected set of views; at runtime the current view is rendered using an approximate visible set constructed from the three closest precalculated views. We will further demonstrate how this method leads to a significant per-frame reduction of the original data size.