Title

Finite Hilbert transform with incomplete data: null-space and singular values

Authors

Authors

A. Katsevich;A. Tovbis

Comments

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Abbreviated Journal Title

Inverse Probl.

Keywords

CONE-BEAM CT; IMAGE-RECONSTRUCTION; VALUE DECOMPOSITION; Mathematics, Applied; Physics, Mathematical

Abstract

Using the Gelfand-Graev formula, the interior problem of tomography reduces to the inversion of the finite Hilbert transform (FHT) from incomplete data. In this paper, we study several aspects of inverting the FHT when the data are incomplete. Using the Cauchy transform and an approach based on the Riemann-Hilbert problem, we derive a differential operator that commutes with the FHT. Our second result is the characterization of the null-space of the FHT in the case of incomplete data. Also, we derive the asymptotics of the singular values of the FHT in three different cases of incomplete data.

Journal Title

Inverse Problems

Volume

28

Issue/Number

10

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

28

WOS Identifier

WOS:000310574000018

ISSN

0266-5611

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