Hi,
I have a very basic question. I want to create a DEM of a
particular region. The DEM is a height field representation, in a
raster image format. I can directly generate elevation data using this
information. Looking at the NASA Blue Marble dataset, you have a
topographic file that represents the topographic data.
Now, after I use the topographic data to reconstruct the 3D surface, I
need to texture map the 3D terrain with image data. For this I guess I
could use the normal NASA Blue Marble images without topograhic or
bathymetric data.
Question 01: What is the use of the NASA Blue Marble images with both
topographic and bathymetric data? Is it useful for creating a DEM with
textured data?
Question 02: How does NASA's SRTM v2.0 data fit into all this? SRTM if
I understand correctly is DEM data. Is SRTM and the NASA Blue Marble
data set connected in some way?
Best regards,
Elvis Dowson
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