Advanced light-field refocusing through tomographic modeling of the photographed scene

Nicola Viganò (Corresponding author), Pablo Martínez Gil, Charlotte Herzog, Ombeline de la Rochefoucauld, Robert van Liere, Kees Joost Batenburg

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Recently we have shown that light-field photography images can be interpreted as limited-angle cone-beam tomography acquisitions. Here, we use this property to develop a direct-space tomographic refocusing formulation that allows one to refocus both unfocused and focused light-field images. We express the reconstruction as a convex optimization problem, thus enabling the use of various regularization terms to help suppress artifacts, and a wide class of existing advanced tomographic algorithms. This formulation also supports super-resolved reconstructions and the correction of the optical system’s limited frequency response (point spread function). We validate this method with numerical and real-world examples.

LanguageEnglish
Pages7834-7856
Number of pages23
JournalOptics Express
Volume27
Issue number6
DOIs
StatePublished - 1 Jun 2019

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formulations
photography
point spread functions
frequency response
artifacts
acquisition
cones
tomography
optimization

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Viganò, N., Gil, P. M., Herzog, C., de la Rochefoucauld, O., van Liere, R., & Batenburg, K. J. (2019). Advanced light-field refocusing through tomographic modeling of the photographed scene. Optics Express, 27(6), 7834-7856. DOI: 10.1364/OE.27.007834
Viganò, Nicola ; Gil, Pablo Martínez ; Herzog, Charlotte ; de la Rochefoucauld, Ombeline ; van Liere, Robert ; Batenburg, Kees Joost. / Advanced light-field refocusing through tomographic modeling of the photographed scene. In: Optics Express. 2019 ; Vol. 27, No. 6. pp. 7834-7856
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Viganò, N, Gil, PM, Herzog, C, de la Rochefoucauld, O, van Liere, R & Batenburg, KJ 2019, 'Advanced light-field refocusing through tomographic modeling of the photographed scene' Optics Express, vol. 27, no. 6, pp. 7834-7856. DOI: 10.1364/OE.27.007834

Advanced light-field refocusing through tomographic modeling of the photographed scene. / Viganò, Nicola (Corresponding author); Gil, Pablo Martínez; Herzog, Charlotte; de la Rochefoucauld, Ombeline; van Liere, Robert ; Batenburg, Kees Joost.

In: Optics Express, Vol. 27, No. 6, 01.06.2019, p. 7834-7856.

Research output: Contribution to journalArticleAcademicpeer-review

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Viganò N, Gil PM, Herzog C, de la Rochefoucauld O, van Liere R, Batenburg KJ. Advanced light-field refocusing through tomographic modeling of the photographed scene. Optics Express. 2019 Jun 1;27(6):7834-7856. Available from, DOI: 10.1364/OE.27.007834