Hi David,

I have seen this problem with osgdem before.  Which version of
osgdem/VPB are you using?

Robert.

On Feb 19, 2008 5:08 PM, Riepl, David M <[EMAIL PROTECTED]> wrote:
>
> > All,
> >
> > I have created a terrain database using osgdem with DTED .dt1 and 5m
> > imagery.  I have osgdem reproject my source data from geographic to
> > transverse mercator projection using --cs and proj4 parameters.  Here
> > is what I am using:
> > "C:\locationof\osgdem" -d D\DTEDtest\mosaic\dtedmosaic.tif -t
> > D:\SourceData\Imagery\OTW-5m --cs "+proj=tmerc +lat_0=42.5
> > +lon_0=-115.75 +k=0.9996 +x_0=0 +y_0=0 +datum=WGS84" -o
> > output_3dmap.ive  -l 99
> >
> > There are 100 individual pieces of imagery used as the input source.
> > But I did not mosaic the imagery as that is impractical when
> > attempting to reach 5m output resolution for an area as large as mine.
> > Problem is, when looking at the point where the edges of 2 images meet
> > there is duplication where the images overlap.  I have attached a
> > screenshot.  So for example, there is a road at the top of the
> > image...you can plainly see that the section of road is repeated.
> > Same with the river below it.
> >  <<Overlap-duplicated.jpg>>
> > I see this duplication on ALL the east/west edges of all the
> > images...I haven't seen this behavior on the north/south edges.  The
> > source images do overlap.  But if I check them in a viewer they
> > overlap perfectly, with no weird offset or anything...and they are the
> > same projection.  So I don't see how that could be the issue.
> >
> > Thoughts? Advice? Help?
> >
> > David Riepl
> > Visualization IG/DB Team
> > Training Systems & Services
> > The Boeing Company
> > 314-777-4741
> >
>
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