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DSM processing issues when calculating tree canopy heights

ShannonShy

Hi there,

I'm working on calculating tree heights (canopy height) for our school's research forest. All was going well until I processed Raw comprehensive lidar data into terrain data then back into raster for a DSM. When I ran the bare earth lidar data I didn't receive any complications but for the final DSM output there are these extremely high data cells that seem to run North/South through the data. I would say that these are power lines but power lines do not run 2133.24 meters above ground also I know the area and there aren't power lines there. I've included images

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