Brian,
I could try the free trial of ArcGIS
(http://www.esri.com/software/arcgis/arcgis10/trial.html), but since we
have access to only the Canadian 30m DEM data (too low res), I don't
think the terrain modeling approach is the way to go. I've used that
approach in the past with VTP, and as long as your DEM and imagery are
at a resolution appropriate to what you are trying to visualize, it can
be very effective.
I don't think an engineering study has been done yet. The range is
on Crown (public) land, and I think the Club was just asking the
Province if it would be ok with the concept. If yes, then they would do
the study and get formal approval. Why the Province would ask for a
rendering at this stage (if that's what they did) is a little confusing.
Anyway, the question of how to do the rendering (with no budget) was
an interesting one. Usually my tool set is very mapping biased, but
because the desired end product is very simple (show a scene without the
berm and one with the berm) in concept, it got me thinking about
augmented reality
(http://ge.ecomagination.com/smartgrid/#/augmented_reality), smart
phones, close-range photogrammetry, Sketchup, GeoDesign, etc...
Thanks!
Best Regards,
Brent Fraser
On 3/2/2011 10:00 PM, Brian Russo wrote:
There are a variety of higher-end tools that can do this.. ArcGIS 3D
Analayst, World Construction Set/other 3D Nature products, most R/S
software (e.g. ENVI). I'm assuming you don't have these tools though.
You could use 3DEM (no longer developed, but works okay last I checked
- http://www.visualizationsoftware.com/3dem).
If you have any kind of spatial analysis GIS software you could output
a DEM with the suitable berm modifications. I've done this a lot for
cut/fill type of studies (typically related to modifications to
riparian systems for construction). It's really not that hard to do
though getting a decent elevation model can be challenging. If it's a
shooting range there should be an engineering study which would have
the suitable data, though data format may be a challenge if you don't
have the right software.
/r
- bri
On Wed, Mar 2, 2011 at 6:45 PM, Roger Rayle<[email protected]> 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]
On Wed, Mar 2, 2011 at 4:13 PM, Brent Fraser<[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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