Thanks again for the further explanation, Tonio. Good clarification regarding the kmz files, they should be easy to generate with some simple scripting, since I have all the necessary information.
I do, however, run into a small issue with the createRgbImage() -function. I have tried this function before and I always get this weird error:
image = band_1.createRgbImage(ProgressMonitor.NULL) RuntimeError: java.util.ServiceConfigurationError: com.bc.ceres.glayer.LayerType: Provider org.esa.s1tbx.sentinel1.rcp.layers.topsbursts.TOPSBurstLayerType not found
I found one older post where the same issue comes up, but I do not know how to fix it. In the mentioned post the issue seems to be fixed by updating the s1tbx repo, but mine is already up to date.
How to overlay a vector polygon when writing an RGB quicklook (java)
I apologize for asking so many questions. I am not a very experienced developer.
Cop