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interimage:examples:example3 [2011/08/12 15:33] rsilva |
interimage:examples:example3 [2014/10/08 19:04] (current) rsilva [Step by step] |
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| * tijuca.tif | * tijuca.tif | ||
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| * Check the //Default Image// checkbox and click the //Add// button. Click OK. | * Check the //Default Image// checkbox and click the //Add// button. Click OK. | ||
| * Create a semantic net like this one: | * Create a semantic net like this one: | ||
| + | (Class names shouldn't contain blank spaces or special characters) | ||
| {{interimage:examples:example3_22.png|Semantic net}} | {{interimage:examples:example3_22.png|Semantic net}} | ||
| * Select the //Image// tab and click the Add button. Set its //Keyname// to //composed// and click the //Composition// button. | * Select the //Image// tab and click the Add button. Set its //Keyname// to //composed// and click the //Composition// button. | ||
| {{interimage:examples:example3_3.png|Image layer}} -> {{interimage:examples:example3_4.png|}} | {{interimage:examples:example3_3.png|Image layer}} -> {{interimage:examples:example3_4.png|}} | ||
| - | * In the dialog that comes up set the color composition according to the image below: | + | * In the dialog that appears set the color composition according to the image below: |
| {{interimage:examples:example3_5.png|Color Composition dialog}} | {{interimage:examples:example3_5.png|Color Composition dialog}} | ||
| * Close the dialog. Click //Save//. Another image layer is added and you should see something like this: | * Close the dialog. Click //Save//. Another image layer is added and you should see something like this: | ||
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| * Save the project. Select the //Scene// node and click the //Samples Editor// button. | * Save the project. Select the //Scene// node and click the //Samples Editor// button. | ||
| {{interimage:examples:example3_7.png|Open Samples Editor}} | {{interimage:examples:example3_7.png|Open Samples Editor}} | ||
| - | * Maximize the window that comes up. Select the //TA_Baatz_Segmenter// operator. Set its parameters according to the following: | + | * Maximize the window that appears. Select the //TA_Baatz_Segmenter// operator. Set its parameters according to the following: |
| {{interimage:examples:example3_8.png|Selecting the operator}} -> {{interimage:examples:example3_9.png|Setting the operator parameters}} | {{interimage:examples:example3_8.png|Selecting the operator}} -> {{interimage:examples:example3_9.png|Setting the operator parameters}} | ||
| * Click the //Segment// button. Once the segmentation is finished, make sure the //Buildings// class is selected and click the //Collect Samples// button. | * Click the //Segment// button. Once the segmentation is finished, make sure the //Buildings// class is selected and click the //Collect Samples// button. | ||
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| * When you are done, repeat the process to the other two classes. Setting the //Background Image// to the other composition created previously can be helpful here. | * When you are done, repeat the process to the other two classes. Setting the //Background Image// to the other composition created previously can be helpful here. | ||
| * After, click the //Collect Samples// again, deselecting it. | * After, click the //Collect Samples// again, deselecting it. | ||
| - | * Now, click the //Export// button | + | * Click the //Export// button. In the window that appears click the //Class// button. Select //All// and click OK. |
| + | {{interimage:examples:example3_12.png|Export Shapefile}} -> {{interimage:examples:example3_13.png|Insert Class}} | ||
| + | * Click the //Expression// button. Set the fields according to the image below: | ||
| + | {{interimage:examples:example3_14.png|Insert Expression}} | ||
| + | * After, create another three expressions. Your decision rule should look like this: | ||
| + | {{interimage:examples:example3_15.png|Decision Rule}} | ||
| + | * Click OK. Set the file name to samples.shp and Click //Save//. | ||
| + | * Save the project. Once the project is saved click on //File// → //Edit Project//. Fill the fields according to the following: | ||
| + | {{interimage:examples:example3_16.png|Edit Project dialog}} | ||
| + | * Click the //Add// button and then click OK. | ||
| + | * Associate the //TA_C45_Classifier// top-down operator to the //Buildings// node. Set the operator parameters according to the image below. Make sure the //TopDown Multi-class// checkbox is checked. | ||
| + | {{interimage:examples:example3_17.png|Selecting the operator}} -> {{interimage:examples:example3_182.png|Setting its parameters}} | ||
| + | * Save the project and execute the interpretation. | ||
| + | * You can improve your classification collecting more samples for the classes that presented more confusion and repeating the process. | ||
