Supervised OBIA SAGA-GIS

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Supervised image classification using object based image segmentation in SAGA-GIS 2.2.5+

  1. rohan fisher
  2. remote sensing
  3. OBIA
  4. image classification
  5. SAGA-GIS
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Комментарии
Автор

Hello. Is there some way that I can update the 'Training' attribute field for all selected polygons after selecting several of them? It's a bit time consuming only being able to update one at a time. It's quite easy in other GIS software but I can't figure it out in SAGA. Thanks for any help

yorkshirepeatpartnership
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I would like to ask - why I receive slightly different results for OBIA by shapes and OBIA by grids? - I defined five training signatures - in "shape version of OBIA" I received an assignment of all segments to my five categories - in "grid version of OBIA" I received six categories - one category contained segments that were not assigned to my signatures - why - is it not same algorithm, method?

petermarton
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Thanks for this. Is there any way to do exactly the same segmentation but the classification with random forest or SVM?

sexivan
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Hello, thanks for this great tutorial. In the end, how to calculate the land cover area in meter square or km2 ?

narrave
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how do you differentiate between mangrove and any other vegetation so the computer won't confused which mangrove and which is another vegetation? im following your tutorial step by step by the way

JK-xnjt
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how to determine the accuracy of Classification Test Results ???

asparoniherman