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St Jeschke, M. Wimmer, H. Schumann, W. Purgathofer:
"Automatic Impostor Placement for Guaranteed Frame Rates and Low Memory Requirements";
Talk: Symposium on Interactive 3D Graphics and Games, Washington DC; 2005-04-03 - 2005-04-06; in: "Proceedings of ACM SIGGRAPH 2005 Symposium on Interactive 3D Graphics and Games", ACM Press, (2005), ISBN: 1-59593-013-2; 103 - 110.

Impostors are image-based primitives commonly used to replace complex geometry in order to reduce the rendering time needed for displaying complex scenes. However, a big problem is the huge amount of memory required for impostors. This paper presents an algorithm that automatically places impostors into a scene so that a desired frame rate and image quality is always met, while at the same time not requiring enormous amounts of impostor memory. The low memory requirements are provided by a new placement method and through the simultaneous use of other acceleration techniques like visibility culling and geometric levels of detail.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05936286

Project Head Michael Wimmer:
EU Game Tools

Project Head Michael Wimmer:
Realistische Echtzeitbeleuchtungssimulation von Bäumen