WebJan 7, 2024 · Purpose In ultrasound tomography (UT), Born iterative method (BIM) and distorted-Born iterative method (DBIM) based on Born approximation are considered efficacious. DBIM offers faster convergence compared to BIM; however, it is more susceptible to noise and vice versa. Combined or multi-model imaging is an … WebJul 1, 2016 · The proposed method overcomes two shortcomings of the enhanced distorted Born iterative method: (i) the regularisation parameter has to be determined …
Hybrid Reconstruction of Subsurface 3-D Objects Using FRTM …
WebDec 26, 2024 · The proposed framework can be extended to Newton or quasi-Newton schemes, where within each Newton iteration, a linear ill-posed problem is optimized that differs from one example to another. The numerical results illustrated in this work show the superiority of the proposed TBIM compared to the conventional sparse-based Born … WebA hybrid method is proposed to reconstruct the subsurface 3-D objects with electromagnetic fields. The frequency-domain reverse time migration (FRTM) is first used to determine the approximate locations and sizes of the objects. Then, based on these results, the full-wave inversion, the variational Born iteration method (VBIM) is used to reconstruct both the … budget rental car wilmington nc
Interpolated hybrid DBIM approach for enhanced imaging in
WebINFORMATION TO USERS This manuscript has been reproduced ... WebJan 7, 2024 · Purpose In ultrasound tomography (UT), Born iterative method (BIM) and distorted-Born iterative method (DBIM) based on Born approximation are considered … WebDuring the iteration process, the contrast sources and the object function are alternately constructed by using conjugate gradient method such that they minimize the whole cost functional until it reaches a predetermined value. The explicit expressions and the iteration steps for the CSI method can be found in . 5. Numerical Results budget rental cell phone