[Geowanking] rendered 3d scene

Brent Fraser bfraser at geoanalytic.com
Thu Mar 3 07:26:39 PST 2011


   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...


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--
> rmrayle at gmail.com <mailto:rmrayle at gmail.com>
> On Wed, Mar 2, 2011 at 4:13 PM, Brent Fraser <bfraser at geoanalytic.com 
> <mailto:bfraser at geoanalytic.com>> 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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