Initialize post-classification editing

You can combine several classes once you have edited your classification. Like the aggregation process, class editing combines several classes; however, instead of combining classes throughout an image, you can combine the classes for all pixels under a bitmap mask.

  1. In the Maps tree, right-click Classification MetaLayer and click Post-classification Analysis and then click Class Editing.
  2. In the Class Editing window, click Image and then click Select Classified Image.
  3. In the Select Classified Image window, choose the output channel you selected when you initialized the classification from the Channels available list.
  4. Click OK.
  5. In the Class Editing window, click Image and then click Select Reference Image.
  6. In the Load Reference Image list, locate and select the Red, Green, and Blue channels. You must use the same reference image to perform class editing. As you select a channel, its number is added to the R, G, and B boxes.
  7. Click OK.

    Once you have selected a reference image you can prepare to draw your bitmap mask.

Parent topic: Post-classification editing
Previous topic: Improving classification results
Next topic: Setting up a bitmap mask

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