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