Smathermather's Weblog

Remote Sensing, GIS, Ecology, and Oddball Techniques

Filtering buildings and vegetation from drone-derived surface models

Posted by smathermather on October 21, 2016

I’ve been playing for the last few days with PDAL and it’s ability to filter point clouds. More code and details later, but here’s a teaser of my results to date:

Image of unfiltered surface model.

Image of unfiltered surface model.

Image of unfiltered surface model

Image of unfiltered surface model.

Image of surface model derived from points filtered using approximate progressive morphological filter.

Image of surface model derived from points filtered using approximate progressive morphological filter.

Image of surface model derived from points filtered using approximate progressive morphological filter.

Image of surface model derived from points filtered using progressive morphological filter.

Image of surface model derived from points filtered using progressive morphological filter.

Image of surface model derived from points filtered using progressive morphological filter.

Image of surface model derived from points filtered using progressive morphological filter.

Image of surface model derived from points filtered using progressive morphological filter plus building footprint and outlier removal.

Image of surface model derived from points filtered using progressive morphological filter plus building footprint and outlier removal.

Image of surface model derived from points filtered using progressive morphological filter plus building footprint and outlier removal.

Image of surface model derived from points filtered using progressive morphological filter plus building footprint and outlier removal.

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