ArcGIS for Desktop

  • Documentation
  • Pricing
  • Support

  • My Profile
  • Help
  • Sign Out
ArcGIS for Desktop

ArcGIS Online

The mapping platform for your organization

ArcGIS for Desktop

A complete professional GIS

ArcGIS for Server

GIS in your enterprise

ArcGIS for Developers

Tools to build location-aware apps

ArcGIS Solutions

Free template maps and apps for your industry

ArcGIS Marketplace

Get apps and data for your organization

  • Documentation
  • Pricing
  • Support
Esri
  • Sign In
user
  • My Profile
  • Sign Out

ArcGIS Help

  • Home
  • Get Started
  • Map
  • Analyze
  • Manage Data
  • Tools
  • More...

Filtering classified output

Available with Spatial Analyst license.

This filtering process removes isolated pixels, or noise, from the classification output. The Majority Filter tool is used to accomplish this task.

In the post-classification workflow, this task is the first in a series of processing steps.

  1. To locate the tool, click on the Search window button Search on the Standard toolbar.
  2. In the Search window, type majority filter and press Enter.
  3. In the search results, click the Majority Filter item. This opens the Majority Filter tool.
  4. On the tool dialog box, set the classified image as Input raster. Accept default settings for other parameters.
  5. Click OK to run the tool.

The following shows an example of filtering. The first graphic is a raw image from a classification analysis. The second is the same image after filtering has been applied. As you can see, much of the noise is removed as a result.

Image before filtering:

Before filtering

Image after filtering:

After filtering

Related Topics

  • What is image classification?
  • Processing classified output
Feedback on this topic?

ArcGIS for Desktop

  • Home
  • Documentation
  • Pricing
  • Support

ArcGIS Platform

  • ArcGIS Online
  • ArcGIS for Desktop
  • ArcGIS for Server
  • ArcGIS for Developers
  • ArcGIS Solutions
  • ArcGIS Marketplace

About Esri

  • About Us
  • Careers
  • Insiders Blog
  • User Conference
  • Developer Summit
Esri
© Copyright 2016 Environmental Systems Research Institute, Inc. | Privacy | Legal