XM Magdalena 3D print, GGeorgy (3D)
LC #42 Pipers Alley

View Full Version : Accurate planet surface models

07-20-2010, 05:24 PM
http://pds.nasa.gov/tools/nasa-view.shtml (http://pds-imaging.jpl.nasa.gov/volumes/magellan.html)

How would you reconstruct a surface flyby of Venus?

http://photojournal.jpl.nasa.gov/jpe...107_modest.jpg (http://photojournal.jpl.nasa.gov/jpegMod/PIA00107_modest.jpg)

Here is what I thought:

Create a bump map using one of the JPEG images:

http://pds-imaging.jpl.nasa.gov/data...rowse.img.jpeg (http://pds-imaging.jpl.nasa.gov/data/mgn-v-rdrs-5-midr-full-res-v1.0/mg_0018/extras/browse/f55s014/browse.img.jpeg)

Create a heavily-divided plane in Blender.
Apply the JPEG as a normal map to the plane.
Simulate colours based on images returned from Soviet Venera 13 and 14.

What would be a better way to go about it?

I looked at using DEM data, then converting DEM to PPM/PNG, or converting DEM straight to OBJ, however that road looked riddled with problematic potholes.

Thank you!

(Blender on Linux)

07-29-2010, 07:51 PM
You would probably be fine just subdividing the plane a bunch and using the tool that lets you pull surrounding vertices (called SoftSelect in Maya) and make those bumps and hills yourself. Then you could just use a bump map to add a little extra grit and finish up with a photo color map.

08-01-2010, 07:37 AM
For extremely detailed environments such as planets, i would go for a custom greyscale heightmap as a displacement map, and add the smaller details in a bumpmap
This all from JPEG data or if you could convert the nasa files into jpeg, do that.

Either that or bodge it yourself with softselect

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08-01-2010, 07:37 AM
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