MCPN, Octree Neighbor Finding During Tree Model Construction Using Parental Neighboring Rule
3D Research(2015)
摘要
A new method for octree neighbor finding is proposed, named during Model Construction using Parental Neighboring rule (MCPN). Our proposed method finds and stores all neighbors of all leaf nodes during tree model construction, unlike majority of previous neighbor finding methods in which constructed tree model is the input of neighbor finding algorithm. Considering Parental Neighboring Rule (PNR), neighbor finding during tree model construction causes no increase in its time complexity class. The proposed method finds all neighbors of a node in 26 possible directions regardless of their size. Experimental results show that both in quadtrees and octrees, MCPN’s needed time to find and store all neighbors of all leaf nodes plus tree model construction time, relative to tree model construction time alone, converges to one as the level of tree increases. Also MCPN outclasses the latest constant time neighbor finding method for quadtrees proposed by Aizawa and Tanaka.
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关键词
Octree, 3D environment, Neighbor finding, Breadth-first, PNR, Tree model construction, MCPN
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