Estimates a constructive imaging part of a reflection event in the dip-angle domain.
Basing on the estimation defines a stacking weight for every migrated sample.
dipFile.rsf - dips esitimated in constant-dip subimages. The dips are in degree (!).
A positive dip corresponds to an ascending boundary, a negative dip - to a descending boundary.
A constant-dip subimage consists of migrated traces correspondig to the same dip-angle.
taperFile.rsf - optimal weights for the migrated samples