[vtkusers] How to drape land surface image over 3D terrain surface recreated from DTED or DEM data

[Karthik Krishnan]

I assyme you are trying to texture map a photograph
onto the surface. You need to assign texture coords
and apply the photo as a texture onto the surface. Assigning
texture coords to the polydata should be pretty easy, since
for DEM data, you can map the photo onto the XY plane.

Elvis Dowson wrote:
> Hi,
>       What approach should I use to drape a land surface image (normal 
> photographic image) over a 3D terrain surface, that has been generated 
> from DTED or DEM data? For example, we have the St.Helen's DEM file 
> that creates a 3D terrain surface. Suppose I have a photograph over 
> the same location, how can I drape the image over the 3D terrain 
> surface, to get the same type of results as Google Maps?
>
> Best regards,
>
> Elvis Dowson
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-- 
Karthik Krishnan
R & D Engineer,
Kitware Inc,
Ph:  518 371 3971 x119
Fax: 518 371 3971