HI @seiichi_takayama. I recently got the ZL1 and I have already tried the first flights with it. I processed in DJI Terra, but I can’t import to PIX4DSurvey because it points me to PIX4Dsurvey support only projected coordinate systems.
@aer We’ve had some trouble reading the coordinate system info from Terra outputs sometimes, but have been working on it. Could you possibly share the point cloud with me and I’ll try in a draft version of PIX4Dsurvey? Thanks, Nate
@aer You should try pix4dsurvey 1.17.1! In my tests, everything works nicely there. The difference is that we’ve now added coordinate system transformations for imported geographic files like yours. Ideally, import that .las into an existing Survey project.
Hi @Nate_Moore Nate_Moore, everything worked fine. I used version 1.18, importing the LAS generated in Terra (after adjusting the coordinate system and geoid). Pix4Dsurvey recognizes the coordinate system and imports the file. Here is an example with a low-density point cloud.
Hi @aprflytechstore. We have some files from L1, but it was not our objective to fly over forest biomass. If you are interested, I could share the flight file with you, so you can see if it helps you evaluate what you are looking for.
That shows (in pink) a set of points taken from the lowest decile of an aerial lidar dataset. This didn’t even use the terrain classification as a helper, it was from the full set, and gives a really nice way to separate your ground under forest canopy from the trees. Of course, if it works in a forest, it’ll be good in other scenarios, like patchy grass, under scrubby bushes, tree branches, overhead wires, etc - give it a try!
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