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11 May 1987Hierarchical Path Planning In Complex Domains
This paper describes hierarchical path planning as a technique for planning paths at different levels of abstraction by using a hierarchical representation of the domain. The path planner makes use of a terrain map and a grid-level search algorithm to perform intelligent path planning. The terrain map is made up of three types of objects, pixels, mapels and maps, each containing information about the terrain. The grid-level search algorithm is a two-pass algorithm that uses these object representations. The results of the path planner show various paths computed through complex terrain.