Post

2 followers Follow
0
Avatar

DTM / DSM

hi,

how can I download DTM and DSM model from the output page ?

It's separate model or single cloud dot?

thank you

 

RONG

Official comment

Avatar

The DEM is a Digital Elevation Model. The output is a 32bit float image that has the elevation of every point in the map at 4X the photo image's GSD. DSM is the same thing. 

It contains structures and vegetation so it is not a DTM. 

Zane

Please sign in to leave a comment.

5 comments

0
Avatar

hi, thank.

But in forest land, it's possible to extract DTM (only terrain) with interpolation from point on the ground and cut the biomass layer.

MAPmadeeasy can do it?

Thank you, best regards

 

RONG 0 votes
0
Avatar

Since we use photographs for creating the elevation model and visible light photography does not penetrate canopy like lidar does, there is no way for us to provide a DTM from your data. If you want to filter the DEM we provide further to get rid of surface features that is up to you. There are packages to do it in QGIS. 

Zane 0 votes