Point spread function and depth-invariant focal sweep point spread function for plenoptic camera 20 | Zendy

Xin Jin | Zendy; Li Liu | Zendy; Yanqin Chen | Zendy; Qionghai Dai | Zendy

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Point spread function and depth-invariant focal sweep point spread function for plenoptic camera 20

Author(s) -

Xin Jin,

Li Liu,

Yanqin Chen,

Qionghai Dai

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.009947

Subject(s) - point spread function , optics , invariant (physics) , fresnel diffraction , computer science , diffraction , fourier optics , physics , computer vision , artificial intelligence , fourier transform , mathematical physics , quantum mechanics

This paper derives a mathematical point spread function (PSF) and a depth-invariant focal sweep point spread function (FSPSF) for plenoptic camera 2.0. Derivation of PSF is based on the Fresnel diffraction equation and image formation analysis of a self-built imaging system which is divided into two sub-systems to reflect the relay imaging properties of plenoptic camera 2.0. The variations in PSF, which are caused by changes of object's depth and sensor position variation, are analyzed. A mathematical model of FSPSF is further derived, which is verified to be depth-invariant. Experiments on the real imaging systems demonstrate the consistency between the proposed PSF and the actual imaging results.

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