How to remove unwanted border from georeferenced raster?

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01-27-2011 07:19 AM
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New Contributor II
I have a set of aerial images that need to be geo-referenced and will be used in outside of ArcMap. So simply adjusting the display properties won't cut it. Because of this I need to find a solution that permanently removes the unwanted border (slivers) and updates the world file. Any help would be great. Thanks.
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2 Replies
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New Contributor III
Greetings,

You can use the clip geoprocessing tool to clip based on a feature (or use data export for a graphics). Make sure you set the nodata value and you should be good to go.

Robert
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Occasional Contributor III
Create a polygon of your image area and use Spatial Analyst>Extract>Extract by Mask. If you need a world file you might need another process. I think you did it in Catalog at 9.3, but now with GDAL as the base I think you might get one by default with a tif. Don't know if that "clipping geometry" option is new, I always thought that tool was useless as it only could extract square extents. I have definitely never seen the other option put forward using a selected graphic. Thanks Robert.
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