[GRASS-user] lidar data - nnbathy x bspline

[Carlos "Guâno" Grohmann]

I did some Lidar interpolation with nnbathy and bspline. data has
~16.5mill points, and final dem has ~35mill cells.
while nnbathy did some very nice results (see image), it took ~8hours
to interpolate. bspline is beautifully fast, did the job in ~1hour,
but the final dem has many artifacts.

I was wondering how to avoid these artifacts with bspline? or with we
could have a vector version of nnbathy?

Carlos


http://www.igc.usp.br/pessoais/guano/temp/lidar_bspline.jpg

http://www.igc.usp.br/pessoais/guano/temp/lidar_nnbathy.jpg

-- 
+-----------------------------------------------------------+
              Carlos Henrique Grohmann - Guano
  Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
Linux User #89721  - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
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