[comp.theory] Neighbor Finding in an Oct-Tree

cristy@brahms.udel.edu ( Cristy) (02/13/91)

  Given a cube in an oct-tree, I need to find all the neighbor cubes
  at the same level of decomposition that have a distance to the
  center of the cube less than some pre-determined amount.   Does
  someone know of references, source code, or an algorithm that can
  efficiently generate the list of all the neighbor cubes?

  Please Email your answer.  Thanks in advance.

  cristy@brahms.udel.edu

metz@bolek.iam.unibe.ch (Igor Metz) (02/16/91)

In article <18700@brahms.udel.edu>, cristy@brahms.udel.edu ( Cristy) writes:
|> 
|>   Given a cube in an oct-tree, I need to find all the neighbor cubes
|>   at the same level of decomposition that have a distance to the
|>   center of the cube less than some pre-determined amount.   Does
|>   someone know of references, source code, or an algorithm that can
|>   efficiently generate the list of all the neighbor cubes?

Did you read

 Hanan Samet: Neighbor finding in Images Represented by Octrees.
 Computer Vision, Graphics, and Image Processing,
 46(3), 1989, p. 367-386.

-- 
Igor Metz
Institut fuer Informatik und angew. Mathematik, Universitaet Bern, Switzerland.
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