What is it about?

All free or low-cost software solutions for ground filtering of airborne LiDAR data are compared. No filter is outstanding compared to the others, but the results are directly transferable to real-world problem-solving: Which filter works best for a given combination of data density, landscape type, and type of archaeological features? In general, Lasground and Global Mapper are consistently among the best, followed by Whitebox Tools. The ability of the MCC-LIDAR to remove vegetation is also commendable. Notably, our findings show that filters based on an older generation of algorithms consistently outperform newer filtering techniques. This is a reminder of the indirect path from publishing an algorithm to filter implementation in software.

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Why is it important?

Choosing the wrong software, for example because you are familiar with it, can lead to poor results. So it makes sense to shop around.

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This page is a summary of: Comparison of Filters for Archaeology-Specific Ground Extraction from Airborne LiDAR Point Clouds, Remote Sensing, September 2020, MDPI AG,
DOI: 10.3390/rs12183025.
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