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TILT: Topological Interface Recovery in Limited-Angle Tomography

Tilt: topological interface recovery in limited-angle tomography
Authors: Elli Karvonen; Matti Lassas; Pekka Pankka; Samuli Siltanen;

TILT: Topological Interface Recovery in Limited-Angle Tomography

Abstract

A novel reconstruction method is introduced for the severely ill-posed inverse problem of limited-angle tomography. It is well known that, depending on the available measurement, angles specify a subset of the wavefront set of the unknown target, while some oriented singularities remain invisible in the data. Topological Interface recovery for Limited-angle Tomography, or TILT, is based on lifting the visible part of the wavefront set under a universal covering map. In the space provided, it is possible to connect the appropriate pieces of the lifted wavefront set correctly using dual-tree complex wavelets, a dedicated metric, and persistent homology. The result is not only a suggested invisible boundary but also a computational representation for all interfaces in the target.

Related Organizations
Keywords

Biomedical imaging and signal processing, limited-angle tomography, non-Euclidean metric, computational topology, Image and Video Processing (eess.IV), Topological data analysis, 65R32, 65T60, 65F22, 92C55, 55N35, tomography, Electrical Engineering and Systems Science - Image and Video Processing, Computing methodologies for image processing, persistent homology, FOS: Electrical engineering, electronic engineering, information engineering, inverse problem, Numerical methods for inverse problems for integral equations

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green