The complete set of CRS parameters can be extracted from seismic data by an application of modern local-slope-extraction techniques. The necessary information about the CRS parameters is contained in the slopes of the common-midpoint and common-offset sections at the central point. As demonstrated by a synthetic data example, the slope extraction is sufficiently robust to allow for derivation of the extracted slope field. This enables the calculation of the CRS parameters from the extracted slopes and their derivatives. In this way, the CRS parameter extraction can be sped up by several orders of magnitude.


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