I have Sentinel-1 IW GRD images; for each capture date, one geotif with the VV and one with the VH values. I assume these are intensity values for the co-polarization and cross-polarization bands. To perform image segmentation (estimating parcel boundaries), I was advised to use the SAR intensity values. Should I use VV, VH, or a combination of these (maybe squared sum: VV^2 + VH^2)?
I have tried using both and their squared sum, but the resulting image segments do not correlate well with what I see on the S2 rgb-images.