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High Resolution Tomography Method Based On Image Edge-preserving PDE
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
The resolution of seismic imaging has long suffered from mid-wavelength gap due to illumination and acquisition limit. The long wavelength components can be resovled from travel-time tomography and the short wavelength components can be recovered from seismic migration. However, the mid-wavelength components that represent high resolution migration velocity model are hardly to be estimated accuratly. In this paper, we propose to incorporate edge-preserving Partial Differential Equation (PDE) in image processing field into tomography preconditioning to guide tomographic update direction. Assisted by the edge-preserving conditioning operator, abundant geological information is applied to constrain the tomographic inverse problem automatically to remedy the mid-wavelength gap successfully. Synthetic and real data applications demonstrate the robustness and the inversion accuracy of the proposed method.