Roger,
I had high hopes for the workflow you describe, but low res DEM in
Google Earth results in a flat scene. But I may try the "background
fences" approach; it might add enough detail...
Thanks!
Best Regards,
Brent Fraser
On 3/2/2011 9:45 PM, Roger Rayle wrote:
Brent--
Maybe this would work for you...
1. Overlay a higher-res aerial photo of the area onto Google Earth
2. Build a model of the berm using Sketchup and place it on Google Earth
3. Overlay some landscape photos of the site onto some "background
fences" built with Sketchup
4. Take some screenshots.
(I used something like this to depict some fence diagrams of lithology
in Google Earth.)
--Roger Rayle--
[email protected] <mailto:[email protected]>
On Wed, Mar 2, 2011 at 4:13 PM, Brent Fraser <[email protected]
<mailto:[email protected]>> wrote:
To all,
A friend of mine needs to submit a picture (rendering?) showing
how a proposed berm would look at a shooting range. I'm getting
this third (or fourth!) hand so I don't have any more details on
the request.
My first thought was to use something like Google Earth and a 3d
model of the berm and take a screen snapshot when I maneuvered to
a viewpoint I liked. But the available DEM and imagery are of
such low resolution it would not be adequate (and I think it
violates the license agreement). Similarly, unless I get much
better DEM and imagery (and that's not likely), terrain modelers
like VTP (http://vterrain.org) or "terrain capable" 3D modelers
like Sketchup would not give enough detail.
So how about augmented reality? I could take a photo of the area
using a smart phone, and maybe get position and orientation out of
it somehow (perhaps determine focal length too). But I don't
know of any FOSS projects for rendering 3d models onto real photos.
Any ideas?
--
Best Regards,
Brent Fraser
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