A Phase Field Approach to Limited-angle Tomographic Reconstruction
Language
EN
Article de revue
This item was published in
Fundamenta Informaticæ. 2020, vol. 172, p. 203-219
English Abstract
The tomography of an object with limited angle can be addressed through Iterative Reconstruction Reprojection (IRR) procedure, wherein a standard reconstruction procedure is used together with a “filtering” of the image ...Read more >
The tomography of an object with limited angle can be addressed through Iterative Reconstruction Reprojection (IRR) procedure, wherein a standard reconstruction procedure is used together with a “filtering” of the image at each iteration. It is here proposed to use as a filter a phase-field—or Cahn-Hilliard—regularization interlaced with a filtered back-projection reconstruction. This reconstruction procedure is tested on a cone-beam tomography of a 3D woven ceramic composite material, and is shown to retrieve a reconstructed volume with very low artifacts in spite of a large missing angle interval (up to 28%).Read less <
English Keywords
Iterative Reconstruction Reprojection (IRR)
X-ray micro-CT
Limited-angle reconstruction
Regularization
Phase field