the 7 gig image "srtm_ramp2.world.86400x43200.bin"
is a height map
At 7 gig you can not use gmic
but GDAL is needed
http://www.gdal.org/
the Windows binarys are listed here
http://trac.osgeo.org/gdal/wiki/DownloadingGdalBinaries
make a TEXT file ( notepad.exe or BETTER YET Scite - google it )
save it with this name
srtm_ramp2.world.86400x43200.hdr
and put this text into it
Code:
ncols 86400
nrows 43200
nbits 16
pixeltype SIGNEDINT
byteorder msbfirst
then with the bin and hdr file in the same folder
run this line of code
the name of the header "hdr" file MUST match the raw "bin" file)
Code:
gdal_translate -ot Float32 srtm_ramp2.world.86400x43200.bin srtm_ramp2.world.86400x43200.32bit.tiff
that will give you a 14 GIG 32 bit tiff image
with pixel values from -415 to 7356
the lowest point on earth to the highest point
at a 1 M elevation scale
for a single image that is 14 Gig in size you will want to cut it up into usable tiles
i use Nip2 for BIG images
http://www.vips.ecs.soton.ac.uk/index.php?title=VIPS
Quote:
we're an animation studio as I told you in my little intro so we'd like to use DEMs to displace flat geometry to result in a detailed Earth surface in 3D that we can use for Animations
blender has a plugin to read into the program the MOON topo data
with a bit of editing of the earth topo data , it can be imported into Blender
but at a very low resolution
a 3d mesh of the height data is going to be very BIG
http://blenderartists.org/forum/showthr ... 1-06-25%29