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I am trying to create an image service out of some 1976 satellite imagery. But first I need to get all of the no data cells out of my mosaic dataset. I have tried to recompute the footprints on my mosaic dataset in ArcMap and only some of the footprints are changing on the tiles. I don't understand why this is happening, and I am not sure how to fix it. Any suggestions would be helpful.

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    Stating how you tried to compute the footprints might give readers useful clues to help you out. – whuber Apr 7 '11 at 17:00
  • I used the Build footprints (data management) tool in ArcMap. – Sherice Apr 11 '11 at 16:59
  • Ah! New tool. I added a tag to let people know. – whuber Apr 11 '11 at 17:33
  • I used the Define Mosaic Dataset NoData tool ( Data Management) in ArcMap it did take the black out. Then I color balanced the mosaic dataset with the color balance tool (data management)but it doesn't look as smooth as it did before I took the original no Data cells out. – Sherice Apr 12 '11 at 14:40