Achieving sub-Rayleigh resolution via thresholding | Zendy

Sara Mouradian | Zendy; Franco N. C. Wong | Zendy; Jeffery H. Shapiro | Zendy

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Achieving sub-Rayleigh resolution via thresholding

Author(s) -

Sara Mouradian,

Franco N. C. Wong,

Jeffery H. Shapiro

Publication year - 2011

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.005480

Subject(s) - optics , rayleigh scattering , image resolution , thresholding , resolution (logic) , diffraction , ptychography , spatial frequency , laser scanning , limit (mathematics) , physics , materials science , laser , computer science , mathematics , image (mathematics) , computer vision , artificial intelligence , mathematical analysis

Diffraction from a finite-diameter entrance pupil imposes the Rayleigh bound on the spatial resolution achievable by a conventional imaging system. We demonstrate resolution beyond this limit through unstructured scanning of a focused laser beam across an object together with dynamic application of a threshold N less than the maximum count level Nmax. Experimental results show sub-Rayleigh resolution enhancement by a factor of [ln(Nmax/N)]1/2.

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