3 papers
math.NA2026
Hybrid GKB Methods for X-Ray Tomography Problems with Unmatched Back Projector
Abdulmajeed Alsubhi, Rosemary Renaut
X ray Computed Tomography (CT) is a widely used imaging modality in medical, industrial, and scientific applications. In practical CT implementations, forward, A, and back projecti…
math.NA2026
GKB Methods for X-Ray Computed Tomography with an Unmatched Back Projector
Abdulmajeed Alsubhi
In large scale X ray Computed Tomography (CT) inverse problems, the forward and back projectors are often generated using different discretizations. This discrepancy leads to unmat…
math.NA2024
Split Bregman Isotropic and Anisotropic Image Deblurring with Kronecker Product Sum Approximations using Single Precision Enlarged-GKB or RSVD Algorithms to provide low rank truncated SVDs
Abdulmajeed Alsubhi, Rosemary Renaut
We consider the solution of the regularized image deblurring problem using isotropic and anisotropic regularization implemented with the split Bregman algorithm. For large…