Patent Document ID: 20120209531
Application ID: 13260979
Patent Flag: 0

Claim One:
1. A method of transforming seismic data D into tau-p space, the seismic data D representing a formation, the method comprising: for each frequency: generating frequency dependent transformation matrices R that are configured to transform frequency-offset seismic data D into frequency-domain tau-p seismic data A according to A=(R + R) −1 R + D; generating an estimate of the number of nonzero eigenvalues of the transformation matrix R + R, the number of nonzero eigenvalues being a function of frequency; creating a transformation matrix X by combining a noise factor and the transformation matrix R + R, the noise factor being a function of the number of nonzero eigenvalues; transforming the frequency-offset seismic data D into frequency-domain tau-p seismic data A according to A=(X) −1 R + D; and outputting a tau-p seismogram indicative of frequency-domain tau-p seismic data A.