Remove noise Grid

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09-29-2012 04:15 AM
ludovicofrate
New Contributor
Hi there!
In ArcView exists a function in the generalize grid tool, that allows to remove noise (is called just like that) in a grid image. Can ArcGis 10 perform the same operation?
Thanks
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4 Replies
JeffreySwain
Esri Regular Contributor
There are several options in the Generalization Tools for Spatial Analyst.  Depending on what type of generalization that you are looking to perform you may prefer the Majority Filter or perhaps Nibble.
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ludovicofrate
New Contributor
There are several options in the Generalization Tools for Spatial Analyst.  Depending on what type of generalization that you are looking to perform you may prefer the Majority Filter or perhaps Nibble.


thank you for the answer! But I need to remove pixel under a threshold (10 pixel) and both Majority filter and Nibble do not allow to do this!
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JeffreyEvans
Occasional Contributor III
The Sieve tool in our Geomorphometry and Gradient Metrics Toolbox will do exactly what you are wanting.

http://conserveonline.org/workspaces/emt/documents/all.html
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ludovicofrate
New Contributor
The Sieve tool in our Geomorphometry and Gradient Metrics Toolbox will do exactly what you are wanting.

http://conserveonline.org/workspaces/emt/documents/all.html


Thank you for the tip! I still haven't tried the tool but i have found this procedure
http://resources.arcgis.com/en/help/main/10.1/index.html#//00nv00000010000000
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