Physics – Geophysics
Scientific paper
2007-08-09
Journal of Applied Geophysics 2007, 61 (2007) 132-141
Physics
Geophysics
10 pages
Scientific paper
10.1016/j.jappgeo.2006.06.002
This paper focuses on the denoising and enhancing of 3-D reflection seismic data. We propose a pre-processing step based on a non linear diffusion filtering leading to a better detection of seismic faults. The non linear diffusion approaches are based on the definition of a partial differential equation that allows us to simplify the images without blurring relevant details or discontinuities. Computing the structure tensor which provides information on the local orientation of the geological layers, we propose to drive the diffusion along these layers using a new approach called SFPD (Seismic Fault Preserving Diffusion). In SFPD, the eigenvalues of the tensor are fixed according to a confidence measure that takes into account the regularity of the local seismic structure. Results on both synthesized and real 3-D blocks show the efficiency of the proposed approach.
Berthoumieu Yannick
Donias Marc
Germain Christian
Guillon Sebastien
Keskes Naamen
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