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Conclusions

We have presented a method for stacking angle-domain common-image gathers for illumination normalization in which we use a local similarity cube between initial image and ADCIGs as the approximate fold of local illumination for each image point of the media. Normalization by local fold can restore migration amplitude and attenuate artifacts possibly caused by irregular acquisition geometry or by wave propagation in complex media. Our method is easy to implement and can be seen as a postprocessing step after migration. Two synthetic examples show that this method can be used to enhance migrated images and to restore migration amplitudes.




2013-03-02