produced by rendering a flat model image using the MRO MOLA 128 pix/deg elevation dataset
in jDem846 then layering imagery from Blue Marble in GIMP. The layer was then brought back
into jDem to produce the final spherical projection and scripted to add the atmosphere and
clouds from the NASA Visible Earth catalog. Eye position is about 6,600 kilometers (4100 miles)
from the surface of the planet and looking at the southern hemisphere (~20° South) and the
Thanks Kevin Gill!!
Screenshot of jDem846
appearance. The terrain is also exaggerated by about 10 times. The orbital “eye” view is about
10,000 km (~6,200 miles) from the surface.
learning project of mine) using the MRO MOLA 128 pix/deg elevation dataset. In that model, I
picked a sea level and scripted it such that terrain at or below that level was flat and blue.
Blue Marble Next Generation image for the source textures. There is no scientific reasoning
behind how I painted it; I tried to envision how the land would appear given certain features or
the effects of likely atmospheric climate. For example, I didn’t see much green taking hold within
the area of Olympus Mons and the surrounding volcanoes, both due to the volcanic activity and
the proximity to the equator (thus a more tropical climate). For these desert-like areas I mostly
used textures taken from the Sahara in Africa and some of Australia. Likewise, as the terrain
gets higher or lower in latitude I added darker flora along with tundra and glacial ice. These
northern and southern areas textures are largely taken from around northern Russia. Tropical
and subtropical greens were based on the rainforests of South America and Africa.
dataset, but rendered as a spherical projection (like Google Earth). I scripted the model to apply
a three-dimensional cloud layer, add an atmosphere, and dampen specular lighting on dry land
and under clouds. There are some other scripted tweaks here and there.”
“If you give someone the perspective tools to communicate – with perspective drawing and showing form and indicating material – that means that they can share with anybody in the world what has never existed before. And then on the other side, if you teach them how to think creatively, invent things that nobody’s ever seen before – now you’ve taught the creativity plus you’ve empowered them with the visual communication tools to show their ideas.”
A fantastic resource from which even professionals can glean tips is the YouTube channel to which concept designer Feng Zhu generously posts many tutorials: