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Zenmuse L1 -> DJI Terra -> PIX4Dsurvey

I can get dataset of Zenmuse L1, the latest product of DJI, LiDAR equipmet.

I tried to analyze dataset by ‘DJI Terra’ and output las file.
Next I tried to import las file to PIX4Dsurvey. Well done !
(No need to insert information of epsg code)

Attached image is result of terrain filter.


(Overview)


(Before remove Non-terrain)


(After remove No-terrain)

3 Likes

Thanks for sharing this @seiichi_takayama ! It looks really nice, and I’m glad the terrain/nonterrain is working so well for you. Did you make a TIN from the smart grid? How did it come out?

1 Like

Hi, @Nate_Moore
Thank you your reply.
Sure, I can make smart grid point.

And after that, I can make TIN.

Seiichi Takayama

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.


These are my first steps in LIDAR. Can you help me see what I’m doing wrong, please?

@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

Hi, @aer
I do not know why error had displayed, sorry.
Is your selected coordinate system special ?

if you know epsg code, please try LASTools.
Please check this thread.

Best regards.
Seiichi Takayama

Hi @Nate_Moore, attached Dropbox link to download a point cloud processed in DJI Terra. https://www.dropbox.com/t/ogWCedVhM5NEKvS0 (357.7 MB)

Please, tell me how you find it with PIX4Dsurvey, and thanks for your time.

Ty @seiichi_takayama, I will try LASTools.

@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.

Let me know how it goes!
Nate

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.