LIDAR and NIR
txrpls
Global Mapper UserTrusted User
Hey Mike, I have a NIR camera that I got with our eBee. What do you think about using the color data for ground extraction?
Comments
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Currently the automatic ground classifier doesn't do anything with available color information, only the elevations of the points and the return number (if multi-pulse) are considered.
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
http://www.bluemarblegeo.com/ -
I understand that, but do you think the NIR would be worth pursuing? I would be happy to supply data.
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I'm not aware of any algorithms that use NIR imagery to identify ground points. Would they maybe do something like a NDVI or NDWI calculation on the multi-band color and try and determine what is vegetation?
If you have the Lidar data with the NIR encoded right in the LAS (or LAZ) as more than 3 color channels that would be interesting to have a sample of though.
Thanks,
Mike
Global Mapper Guru
geohelp@bluemarblegeo.com
Blue Marble Geographics for Coordinate Conversion, Image Reprojection and Vector Translation -
I have been really busy, but will do a flight as soon as I get a chance and see what is in the LAS file.
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