create digital elevation models

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THLAB35
Posts: 1
Joined: Thu Oct 07, 2021 2:43 pm

create digital elevation models

Post by THLAB35 »

Hello,

I enter a problem when creating a DEM. I can't get slopes identical to the real one.

I have tried several treatments using CSF filter, but I don't get the expected result.

Does anyone have an idea? Thank you in advance.

Thibault
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Cloudcompare_DEM.PNG
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réalité_DEM.PNG
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daniel
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Re: create digital elevation models

Post by daniel »

Hard to visualize, but it seems that too much points are removed from the original cloud by the CSF plugin? What does the original cloud look like?
Daniel, CloudCompare admin
amirfarshadfar
Posts: 1
Joined: Fri Mar 08, 2024 11:09 am

Re: create digital elevation models

Post by amirfarshadfar »

Hi

I have a question. Could you please guide me what to do.
I want a DEM file related to the top of trees and vegetations, is it available in any website or utility like Lidar, SAR, .. (with good precision) to be achieved? Which of them do that for me with high precision?

The most important thing is to evaluate the height of trees or have the elevation of top of trees and vegetation. Is there any source for them, even if it is possible to download it or achieve it for different year?

Thanks for your guidance
daniel
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Posts: 7717
Joined: Wed Oct 13, 2010 7:34 am
Location: Grenoble, France
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Re: create digital elevation models

Post by daniel »

So the easiest way would probably to use the 'Rasterize' tool, keeping the highest altitude in each cell (see https://www.cloudcompare.org/doc/wiki/i ... /Rasterize).
Daniel, CloudCompare admin
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