Divisão de Observação da Terra e Geoinformática

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====== Example 1 - Performing a segmentation ======

This example shows how to perform a simple segmentation and teaches some basic concepts about the user interface.







===== Database =====


{{interimage:examples:example1_data.zip|Example 1 - Database}}

This zip file contains:

  * tijuca.tif






===== Step by step =====

  * Start InterIMAGE. Click on //File// -> //New Project// and fill the fields according to the following:
{{interimage:examples:example1_1.png|New Project dialog}}
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**Attention**! Make sure the resource key you type in this dialog doesn't match a class name in your semantic net, otherwise InterImage won't run properly.
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\\ 
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**Attention**! Make sure the keys, names and paths in your project don't have white spaces or non-ASCII characters, otherwise InterImage won't run properly.
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\\
  * Check the //Default Image// checkbox and click the //Add// button. Click OK.
  * Try the visualization tools: Pan, Zoom etc.
{{interimage:examples:example1_22.png|Visualization tools}}
  * Select the image layer and click the //Composition// button. Try different compositions.
{{interimage:examples:example1_3.png|Image layer}} -> {{interimage:examples:example1_4.png|Color Composition dialog}}
  * Right-click the //Scene// node and click on //Insert Child// -> //Node//. Select the inserted node and set its //Class// to //Segmentation// and its //Color// to blue. This will be our semantic net for this project.
{{interimage:examples:example1_5.png|Inserting a node}} -> {{interimage:examples:example1_6.png|Semantic Net}}
  * Associate a segmentation top-down operator to the //Segmentation// node. We will use the //TA_Baatz_Segmenter// operator in this example. Set the operator parameters according to the following:
{{interimage:examples:example1_7.png|Selecting a top-down operator}} -> {{interimage:examples:example1_8.png|Setting the operator parameters}}
  * Click on //File// -> //Save Project//. Click the //Execute// button. After the execution you should see something like this:
{{interimage:examples:example1_92.png|Analysis ready}}
  * Select the result layer and try different border and opacity settings.
{{interimage:examples:example1_10.png|Result layer}}
  * Now, you may want to try different values for the segmentation operator parameters. Just make the changes and re-execute the interpretation. You can also try another operators, our [[interimage:operators_documentation|Operators Documentation]] can be helpful.







==== Exporting a shapefile ====

  * Select the result layer and click the //Export// button.
{{interimage:examples:example1_11.png|Export result layer}}
  * In the dialog that appears click the //Class// button and select the //Segmentation// class. Click OK.
{{interimage:examples:example1_12.png|Export Shapefile dialog}} -> 
{{interimage:examples:example1_13.png|Insert Class}}
  * Click OK and select a name for your shapefile. Click Save.
{{interimage:examples:example1_14.png|Choose Shapefile}}






==== Loading the shapefile into the project ====

  * Save the project. Once the project is saved click on //File// -> //Edit Project//. Fill the fields according to the following:
{{interimage:examples:example1_15.png|Edit Project dialog}}
  * Click the //Add// button and then click OK.
  * Select the //Shape// tab and click the //Add// button. Change //Color// and //Opacity// properties if needed, then click //Save//.
{{interimage:examples:example1_16.png|Adding a shape layer}} -> {{interimage:examples:example1_17.png|Adding a shape layer}}