Integrating External Ground Points in Forests to Improve DTM from Dense-Matching Photogrammetry

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Martin Isenburg

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Jun 13, 2017, 5:25:24 AM6/13/17
to LAStools - efficient command line tools for LIDAR processing
Hello,

more and more people use LAStools to work with photogrammtric point clouds obtained with dense-matching algorithms. Dense vegetation cover is the biggest hurdle in generating a reasonable DTM as often not a single ground point is generated in large forests areas or dense plantations. In this blog post we describe step-by-step using a real world example how to integrate external knowledge about the ground to compute a meaningful Canopy Height Model for a forest from dense-matching points.


Regards,

Martin
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