By means of the Common Focal Point (CFP) technology [1, 2], seismic two way traveltime data can be converted to one way focusing operators. These focusing operators are generally used for model independent imaging, so that the image will not be constrained by any (user-defined) model. Nevertheless, when a velocity model of the subsurface is requested, it can be obtained from these focusing operators by tomographic inversion. This abstract presents a method for the inversion of focusing operators using data-driven model parameterization. It is demonstrated that this inversion results in an accurate unconstrained estimation of both velocities and focal point locations.


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