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A novel representation for planning 3-D collision-free paths

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2 Author(s)
Bonner, S. ; Dept. of Electr. Comput. & Syst. Eng., Rensselaer Polytech. Inst., Troy, NY, USA ; Kelley, R.B.

A new scheme for the representation of objects, the successive spherical approximation (SSA), facilitates the rapid planning of collision-free paths in a dynamic, three-dimensional environment. The hierarchical nature of the SSA allows collisions to be determined efficiently while still providing an exact representation of objects. The rapidity with which collisions can be detected, less than one second per environment object per path, makes it possible to use a generate-and-test path-planning strategy driven by human conceptual knowledge to determine collision-free paths in a matter of seconds on a Sun 3/180 computer. A hierarchy of rules, based on the concept of a freespace cell, is used to find heuristically satisfying collision-free paths in a structured environment

Published in:

Systems, Man and Cybernetics, IEEE Transactions on  (Volume:20 ,  Issue: 6 )

Date of Publication:

Nov/Dec 1990

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