I am considering the idea of implementing a Lidar capability for
GeoTools. Before doing so, I was wondering if anyone would care to
comment as to whether such a capability would be useful to the GeoTools
community. Or, for that matter, whether a viable implementation already
exists.
If a new Lidar implementation would be worth doing, does anyone have
suggestions on what functions would be most useful? Could you offer
pointers on the best general approach to the implementation?
My plan for developing a GeoTools Lidar module is to draw on an open-source
project I’ve posted over on github at https://github.com/gwlucastrig/Tinfour
. The Tinfour package provides a pure-java implementation of a Constrained
Delaunay Triangulation (CDT) that, I think, makes a start toward
addressing the memory and speed issues inherent in dealing with Lidar data
samples. A typical Lidar LAS file can contain 5 to 10 million sample
points or more… That fact makes speed and memory considerations critical
to a viable solution. There is a proof-of-concept test program at the
Tinfour site that demonstrates the ability of the software to process Lidar
data and offers some support for the claim that it would work for GeoTools.
Thank you for your attention in this matter.
Gary
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