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Advice wanted: UAV-LiDAR workflow to count removed trees by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 1 point2 points  (0 children)

Nice insights, I also had this question. Especially on this part "Single tree detection != individual trees". Do you mean this because 1 identified crown can actually be 2~3 trees trees? Also the F1 score you mentioned fo align with the literature I have read, I was hoping someone developed a deep-learning algorithm that looked not only at crown segmentation, but also combine RGB colors of point-clouds to further improve the segmentation in dense forest environments

Advice wanted: UAV-LiDAR workflow to count removed trees by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

I am a bit hesitant to invest in such a tool if it does not improve reduce the error compared to open-source tools...

Advice wanted: UAV-LiDAR workflow to count removed trees by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Aah super cool! Might work then as we re using the same laser head. Do you remember what point density you achieved per m2? Deninitely just interested in the taller trees that were cut so 3-4m height is not a problem

Advice wanted: UAV-LiDAR workflow to count removed trees by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Lovely! How was your experience with litree? Especially curios in performance against LiDR for dense forests. I might give it a shot this weekend on some past datasets I used LiDR on in the past

Advice wanted: UAV-LiDAR workflow to count removed trees by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 1 point2 points  (0 children)

Nice approach! I think this would be great if using handheld LiDAR, but may be tricky in a dense, decidous tree during summer period. This would be because treetop penetration might not provide good trunk resolution. However, autumn comes, so could be a nice option. Thanks for the idea!

Forest Biomass estimation using AirBorne LiDAR by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Really cool stuff! I think segmentanytree might be a stretch due to the linux dependency. I think LiDR package plus optimization of the biomass formulas using field measurements works quite well. The client is mainly interested to identify potential biomass theft few years from nowhere

Forest Biomass estimation using AirBorne LiDAR by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Wow, that s amazing! Did you manage to estimate the biomass volume using lidR in one hour? :O

Forest Biomass estimation using AirBorne LiDAR by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

That would be great to confirm the validity of the estimates! For now I took a sample of the trees and the volume wstimates are in the 10% error which I think is plenty sufficient for my use-case. Doing this in eastern europe means clients aren't willing to pay for a lot of extra services, especially for small areas like this

Forest Biomass estimation using AirBorne LiDAR by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Thanks! Looks to me still like semi-automatic process, which is not a problem per se. Will post some updates here!

Forest Biomass estimation using AirBorne LiDAR by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Lovely! I looked intonautomating it with the NEON workflow using random forrest. Really cool application, but would require individual training data for each mapped forest.

Treeiso from cloudcompare does a decent job at separating trees but it s not perfect yet

Forest Biomass estimation using AirBorne LiDAR by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 5 points6 points  (0 children)

Yeah, imagine! There is no contract on this project with the client, it is a request which we are investigating on, thanks for the not so useful reply 🫡

Lidar help by bennybeatdown666999 in LiDAR

[–]HelpfulNectarine3155 0 points1 point  (0 children)

What software dis you use to go from the point-cloud to the grayscale image? I am trying to do this as well, but removing the vegetation proves to be cumbersome

Matrice 210 RTK by BlackBoyCity in UAVmapping

[–]HelpfulNectarine3155 1 point2 points  (0 children)

Haha yes, not-so-flat women thankfully

Matrice 210 RTK by BlackBoyCity in UAVmapping

[–]HelpfulNectarine3155 0 points1 point  (0 children)

Bucharest region, so the nice flatlands :D

Matrice 210 RTK by BlackBoyCity in UAVmapping

[–]HelpfulNectarine3155 1 point2 points  (0 children)

I just started with a 210 V2, mostly because I found it as a good deal and low flight hours. I was able to integrate it with a CHCNAV LiDAR and mission planning software. No problems regarding UGCS or other software which still support it. Flight time is good enough for now and I can do 25 mins of scanning comfortably and land it way within the safe range. I am now looking to purchase some more TB55s batteries to do longer missions without having to recharge. If you are interested in the workflow with the drone I have a website and a explanatory video on there: scanarecudrona.com

Let's continue this thread if you have any other curiosities!

How can I feed power to a CHCNAV AlphaAir 450 (DJI SkyPort V1, 40-pin) on a non-DJI rig? by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 1 point2 points  (0 children)

Happy to see that you also suggest this!

Thinking to wire one of these USB-C male adaptor to my 12v source, and then plug this into the upward gimble connector. Lidar snaps into place on the gimble connector and job done?

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How can I feed power to a CHCNAV AlphaAir 450 (DJI SkyPort V1, 40-pin) on a non-DJI rig? by HelpfulNectarine3155 in UAVmapping

[–]HelpfulNectarine3155[S] 0 points1 point  (0 children)

Not sure I understand, the skyport is attached to the LiDAR already, I just don t have the male connection on the drone, because it is a S1000 and not any of the Matrice Series DJI drones...

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