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Recently, there is a trend to develop efficient polygonization techniques for implicit surfaces, aiming at interactive modeling and animation. One of the most challenging issues for such techniques is to ensure the matching between the topology of the surface and the topology of its polygonal approximation. Therefore, it is important to accurately extract(More)
Many applications, such as games, demand massive collections of trees and vegetation in general. The solutions for rendering these environments fall into two possible categories: controlling the amount of geometry displayed, and billboard-based solutions. Using the full geometry is prohibitively expensive when dense forests are needed, therefore(More)
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