Sentinel 1 land cover classification

Microwave Toolbox
#12

Good luck. You can share your results in here with screenshots and we can maybe help again if you are stuck somewhere.

#13

I am having my training data sets as point file. Is it possible to classify S1 data in SNAP using points?

#14

I don’t think so. In any case for SAR data using a single pixel would be bad.

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#15

If I have the polygons, is it possible to do supervised classification in S1 images with SNAP?

Organic crops with Sentinel 1 data
#16

yes. Open your SAR image, menuy > import > other > shapefile
Then use the polygons as training vectors in the classification modules by selecting the column that has the class information.

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Classification of Sentinel 1A imagery
#17

How do you execute a Support Vector Machines classification to map rice areas in Sentinel-1 toolbox? thanks before

#18

SVM is currently not implemented in SNAP

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#19

Thanks for the reply ABraun. Do you have any suggestions on what classification method i can use to map rice areas that can be achieved with SNAP Sentinel-1 toolbox? My data is IW GRDH by the way

#20

the random forest classifier is quite good if you have data of different scales. But it needs more than just 2 rasters.
For the case you only have VV and VH you can use the KD Tree KNN classifier.

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#21

Okay Abraun how do you execute a KD Tree KNN classifier on SNAP? I’ve tried looking at http://step.esa.int/main/doc/tutorials/ and the ESA training courses but couldn’t find what was needed. Sorry for the many questions.

#22

collect sample areas and use them for training.
Please see here:

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#23

Thanks a lot ABraun one last question how do you digitize polygons in SNAP? Is it the same as in Arcmap? how about points?

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#24

points are called pins in SNAP

you can digitize them with this toolbar, it is quite intuitive

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#25

can the enmap be used on sentinel-1 data classification?

#26

Usefull information @ABraun

#27

Is it now implemented`?

#28

I’m afraid no.

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#29

I have version 6 but I did not find it and I did not know about version 7 but it seems it is not implemented there. Thanks for answer.

#30

Did you not receive a notice about version 7 every time you check for updates? Anyway, version 8 is some weeks away not but you should try 7 too.

#31

Thanks I will try it but Do you know it has SVM classifier or not?