Corpus ID: 52942627

TV-regularized CT Reconstruction and Metal Artifact Reduction Using Inequality Constraints with Preconditioning

@article{Schiffer2018TVregularizedCR,
  title={TV-regularized CT Reconstruction and Metal Artifact Reduction Using Inequality Constraints with Preconditioning},
  author={Clemens Schiffer},
  journal={ArXiv},
  year={2018},
  volume={abs/1810.03275}
}
  • Clemens Schiffer
  • Published 2018
  • Mathematics, Computer Science
  • ArXiv
  • Total variation(TV) regularization is applied to X-Ray computed tomography(CT) in an effort to reduce metal artifacts. Tikhonov regularization with $L^2$ data fidelity term and total variation regularization is augmented in this novel model by inequality constraints on sinogram data affected by metal to model errors caused by metal. The formulated problem is discretized and solved using the Chambolle-Pock algorithm. Faster convergence is achieved using preconditioning in a Douglas-Rachford… CONTINUE READING

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