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Culling output geometry for areas not covered by source DEM


 
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dekosser
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Joined: 29 Aug 2013
Posts: 3

PostPosted: Thu Aug 29, 2013 7:06 pm    Post subject:
Culling output geometry for areas not covered by source DEM
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Hi,

I am using OSGDem to combine raster imagery and XYZ elevation data into a textured OSG model for a simple patch of terrain. I have used GlobalMapper to export XYZ data into an elevation-GeoTIFF as input. However, the XYZ data covers a roughly rectangular area which is not axis-aligned, so I have four triangles without valid elevation data in my input GeoTIFF.

OSGDem happily produces cliffs in these regions - is there a way to cull out geometry for areas not covered by source elevation data?

Thank you!

Cheers,
Fred
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dekosser
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Joined: 29 Aug 2013
Posts: 3

PostPosted: Thu Sep 12, 2013 11:44 am    Post subject:
Culling output geometry for areas not covered by source DEM
Reply with quote

Hi,

I am using OSGDem to combine raster imagery and XYZ elevation data into a textured OSG model for a simple patch of terrain. I have used GlobalMapper to export XYZ data into an elevation-GeoTIFF as input. However, the XYZ data covers a roughly rectangular area which is not axis-aligned, so I have four triangles without valid elevation data in my input GeoTIFF.

OSGDem happily produces cliffs in these regions - is there a way to cull out geometry for areas not covered by source elevation data?

Thank you!

Cheers,
Fred

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