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Reconstruction of a function defined on a sphere using the Funk transform

Year: 2024

Type: preprint

Abstract: It is known that the Funk transform (the Funk-Radon transform) is invertible in the class of even (symmetric) continuous functions defined on the unit 2-sphere S^2. In this article, for the reconstruction of f from C(S^2) (can be non-even), an additional condition (to reconstruct an odd function) is found, and the injectivity of the so-called two data Funk transform is considered. An iterative inversion formula of the transform is presented. Such inversions have theoretical significance in convexity theory, integral geometry and spherical tomography. Also, the Funk-Radon transform is used in Diffusion-weighted magnetic resonance imaging.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2411.05365

Author: Aramyan, Rafik

Institutions: Russian-Armenian University, Institute of Chemical Physics NAS RA

Language: English

Topic: Numerical methods in inverse problems

Subfield: Mathematical Physics

Field: Mathematics

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4404389504

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