reply to post by abeverage
I rendered the bottom two out in the last version of Terragen before they switched over to Terragen 2 - it's version 0.9.43 I think. I used that
instead of the newer version with more under the hood because it already had preset shaders for the Martian surface and atmosphere, and I didn't feel
like taking the time out to create martian shaders for the newer version.
The overhead map and the 8X closeup were done with 3dem, and I blew up the closeup to 8X using Irfanview.
Terragen, being a scenery renderer, adds detail that's not there in the original data. In this case the vertical striations on the anomaly itself.
The rotation animations I did in 3dem showed the data more as it is, but I couldn't upload them since I have no YouTube account and didn't care to
create one. As it rotates in those, you can see the knife-like character of the anomaly, and the fact that the sides are smoother on the "web"
stretched out between the data points, rather than striated as the Terragen pictures appear.
I've tried to use Bryce, but it's beyond my ability. Not much in the way of description in the interface, so the various buttons are all guesswork
to me. I never could hit the right combination of buttons to make an actual picture of anything at all in Bryce.
The interface isn't set up for
use by old timers like me, who just can't seem to suss out what the little picture of a palm tree is supposed to do to the render, then when I click
one one or the other of the buttons, it presents me with options that may as well be written in an obscure South American Yanomami Indian dialect.
maybe it was based on the Mac interface or something - I never got Macs figured out without someone hovering over my shoulder for a walkthrough, click
by click, which is cumbersome...
I did some pictures In Terragen 2, which I may post a little later - they're on my laptop, and I'm on a desktop right now.
Edit to add: I cropped out the area from the original data file using 3dem (have to use the latitude/longitude display option rather than the
sinusoidal in order to crop out the area), then converted it to a terragen .ter file for import to Terragen also using 3dem for the conversion.
3dem is a handy little program for working with nearly any sort of digital elevation models and converting them to the most often used formats. It
imports USGS DEM files in either ASCII or SDTS formats, Mars MOLA, SRTM and GEOTIFF directly, and has an option to import any other data in columns
and rows if you know the metadata for the file, exports USGS DEM, terragen .TER, GEOTIFF, and binary. If you have any sort of imagery, from satellite
overheads to georeferenced maps, you can drape them right on to the surface produced for visualization of the data. If I had High resolution overhead
images of this area, we could take a peek at what it looks like from the ground in a more or less "you are there" sort of view, or a "flyover".
maybe MRO has some hi res of the area. I'll look into it later.
edit on 2011/10/24 by nenothtu because: (no reason given)