Blending seamlines from DEM mosaic

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09-07-2012 03:49 AM
HenriRiihimäki
New Contributor
Hello,

I created a raster dataset from numerous DEM's using BLEND as a mosaicing option. However there are still clear seamlines at the edges of the DEM's. I've tried pretty much everything I can imagine to fix this. All the DEM's are made from the same contour and elevation point dataset. (DEM's were made in pieces due memory allocation problems and accuracy reasons -> i'm working with 5 m resolution in a ~2500 km2 area).

Do you have any idea how could I blend these DEM's to gether without seamlines?

I tried to add layers multiple times to the dataset so more blending would take place, but that's not working.. Could this be fixed via raster calculator?

Here's one seamline that can be seen from hillshade:
[ATTACH=CONFIG]17544[/ATTACH]

Any ideas are welcome..!
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HenriRiihimäki
New Contributor
Got it fixed.

We masked out the erroneous 2 pix seamline andthen mosaiced another dem from seamline area with a blend option.  Wasn't that fast but it did the trick.
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