I am running into trouble performing Radiometric Terrain Flattening on co-registered images, wondering if anyone else has run into (and has a solution to) this problem?
My images are first calibrated to beta0 and co-registered, but when I continue in the processing chain to terrain flatten the image with two beta0 bands (a master and slave), the output image has a singular gamma0 band, with no indication if it is based on the master or slave input band.
I may not understand your question; originally my issue was in terrain flattening co-registered images with multiple beta_0 bands. This process would produce a single gamma_0 band, and didn’t indicate if it was a flattened image of one of the bands or a combination of the bands.
Terrain flattening prior to co-registration solves this problem, and thankfully produces minimal residuals.
As the best DEM’s I have access to for this region are the S1-tbx available SRTM or ASTER, I still must multi-look before terrain flattening, which is more processing than I would prefer prior to co-registration.
I have also tried terrain flattening prior to co-registration but still I have missing bands in the outcome image, I think it is the problem of the stacking phase in co-registration because when I stack the images using create stack option I have the same error.