HI Shayne,

I looks like the reprojections that GDAL is used for has screwed up.
I've never personally seen such errors.  Are you able to isolate this
problem to a particular tile/source imagery?

Robert.

On Wed, Dec 10, 2008 at 5:14 PM, Tueller,  Shayne R Civ USAF AFMC 519
SMXS/MXDEC <[EMAIL PROTECTED]> wrote:
> I've built a geocentric database using VBP 0.9.7. The imagery is GeoTiff
> tiles that are NAIP 1 meter UTM and the elevation is DTED level 1. The
> GeoTiffs appear to be reprojected by VPB (I assume using GDAL internally)
> for the geocentric database setting. Things appear to build just fine
> without error but when I view the database in OSG, I see a nasty
> discontinuity across texture tile boundaries. You can clearly see this in
> the airfield picture that is attached. The landing strip does not line up
> across the tile boundary. I've verified that the tiles themselves are
> correct across boundaries before I fed them into VPB. The discontinuity
> appears regardless of the LOD that is being paged in.
>
>
>
> My question is, is this an artifact that I must live with since the original
> imagery is based in UTM and the reprojection that VPB does (or GDAL)
> introduces inaccuracies when going to a geocentric database? Is there
> something else I can do to eliminate these discontinuities?
>
>
>
> Any input or ideas anyone can suggest to eliminate these discontinuities in
> the database would be welcome.
>
>
>
> Thanks,
>
> -Shayne
>
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