Using command line utility or utilities suitable for scripting how can I generate a boundary polygon that shows the area actually covered by lidar data points, not just the box extent of the LAS files?
In this figure, the purple is a simple box extent, easily generated by several tools, but what's desired is the grey area which represents the actual point coverage. Using pdal tindex without
--fast_boundary generates a useful but fairly crude approximation. I'd like something that matches the data area more tightly (a bit inside even better).
I'm using Windows but don't want to restrict solutions to a single platform unecessarily. Open source is preferred, then free, then whatever.
Related question for ArcGIS: Creating boundary polygon shapefile from set of LAS files using ArcGIS Desktop?