In http://srtm.csi.cgiar.org/SRTMdataProcessingMethodology.asp it's
called only DEM. In some papers it's called DSM.
I'd rather say it's a DSM. But I would also like to know if there are
objections 
Thank you,
Nikos
IMO its a DEM, since the "z" value represents elevation, including
tree canopy and urban features. I personally don't like the term DSM
because it can be related with any kind of Surface, and DEM (and DTM,
when the "z" values represent the altitude) is related with the
_topographical_ surface.
cheers
Carlos
On Wed, Jun 25, 2008 at 15:31, Nikos Alexandris
<nikos.alexandris@felis.uni-freiburg.de> wrote:
In http://srtm.csi.cgiar.org/SRTMdataProcessingMethodology.asp it's
called only DEM. In some papers it's called DSM.I'd rather say it's a DSM. But I would also like to know if there are
objectionsThank you,
Nikos
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Carlos Henrique Grohmann - Guano
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Can't stop the signal.
HI,
Well, in my opinion a DTM is a model describing the elevation of the terrain, without superimposed elements like houses, bridge, etc...
A DSM is a general term for a surface model of whatever type...
and a DEM is a model of elevations, where the Z is the height (including therefore DTM, but also DSM)
I most like DTM only for bare earth surface, and DSM for terrain+superimposed elements
And SRTM seems to be a DSM in this sense...
my 2 cents...
Maxi
Carlos "Guâno" Grohmann wrote:
IMO its a DEM, since the "z" value represents elevation, including
tree canopy and urban features. I personally don't like the term DSM
because it can be related with any kind of Surface, and DEM (and DTM,
when the "z" values represent the altitude) is related with the
_topographical_ surface.cheers
Carlos
On Wed, Jun 25, 2008 at 15:31, Nikos Alexandris
<nikos.alexandris@felis.uni-freiburg.de> wrote:
In http://srtm.csi.cgiar.org/SRTMdataProcessingMethodology.asp it's
called only DEM. In some papers it's called DSM.I'd rather say it's a DSM. But I would also like to know if there are
objectionsThank you,
Nikos
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