[[interimage:|InterIMAGE wiki]] 
====== InterIMAGE Examples: Rule-Based Classification ======

This example shows how to perform a single classification of pools and roofs in a small image, through rule-based classification. 

This project is called "pools_and_roofs" and uses the operator TerraAIDA_Baatz_Segmenter. 

The InterIMAGE interpretation project can be downloaded here: {{wiki:thales:pools_and_roofs.zip|download}}

The image used in this example is the following:

{{wiki:thales:input_image.png|}}

After creating the InterIMAGE project, we should inserted three nodes, namely //pools//, //roofs// and //background//. All nodes will have the top down operator TerraAIDA_Baatz_Segmenter, as showed in the figure below.

{{wiki:thales:pools_parameters.png?400|}}

To classify, we can use the attribute //ratio// for band 1, as the following:

  * //pools//
    * ratio(band 1) < 0.3
  * //roofs//
    * ratio(band 1) > 0.4
  * //background//
    * ratio(band 1) >= 0.3 AND ratio(band 1) < = 0.4

The next figure shows the rule for node "roofs".

{{wiki:thales:roofs_rule.png?400|}}

After inserting the rules and starting the project, the resultant classification will show as the following:

{{wiki:thales:classification.png?400|}}