Monday, 14 May 2007

GeoTec 2007 presentation on Automated Watershed Boundary Generation

I'm giving a talk at GeoTec 2007 in Calgary entitled "WaterBuG: An Automated Generator for Watershed Boundaries". This covers a project I've been working on for the last year-and-a-half. It's a very cool application of complex large-scale geo-processing, using a whole assortment of nifty geometric structures and algorithms such as:
  • quad-edge subdivisions for modelling
  • Triangular Irregular Networks (Delaunay triangulations)Delaunay triangulation refinement
  • Medial axis refinement
  • Surface modelling with a TIN
  • Surface hydrological flow modelling over a TIN
  • Flood filling
  • Depth- and breadth-first Graph traversal
  • Topology-preserving Linestring smoothing
  • Discrepancy detection

Here's a couple of screenshots from the talk - I'll post the full presentation sometime soon, somewhere...

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3 comments:

  1. Άγγελος Παναγιωτάκης23 September 2009 at 06:50

    Really interesting work.
    How can i find a demo of waterBug or the official site for more info?

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  2. Dr JTS23 September 2009 at 09:04

    Unfortunately WaterBuG is not hosted anywhere at the moment. I'm working on this, but don't have an ETA for when it will be available.

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  3. Άγγελος Παναγιωτάκης25 September 2009 at 11:23

    an open source project not beeing hosted ?
    How about a sourceforge (www.sf.net) account for those of us intrested in the project ?

    ReplyDelete