[postgis-tickets] [PostGIS] #3264: Spurious edges in ST_ApproximateMedialAxis

PostGIS trac at osgeo.org
Tue Aug 25 05:34:06 PDT 2015


#3264: Spurious edges in ST_ApproximateMedialAxis
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  Reporter:  strk     |      Owner:  strk
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 2.2.0
 Component:  postgis  |    Version:  trunk
Resolution:           |   Keywords:
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Comment (by strk):

 Pre-simplifying input to skeletin is suggested as being a good idea by
 Fernando Cacciola of CGAL:
 https://github.com/CGAL/cgal/issues/123#issuecomment-112911320

 Distance from the contour is not constant: the data I'm using is about
 rivers and along this specific river there are legit medial axis that are
 1mt away from border while the offending one in the picture is 10mt away
 (so the local area shown in picture would have an average of 20mt
 distance).

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3264#comment:4>
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