Optical image coding with a circular Dammann grating

Kyu B. Doh; Kelly Dobson; Ting-Chung Poon; Po Sheun Chung

doi:10.1364/AO.48.000134

Optical image coding with a circular Dammann grating

Kyu B. Doh
, Kelly Dobson
, Ting-Chung Poon
, Po Sheun Chung

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

A circular Dammann grating in the front focal plane of a lens is used to generate an annular beam in the back focal plane to code an object by two-dimensional scanning. The coded image of the object is decoded digitally by convolving it with the same annular beam used to code the object. Simple inverse filtering is subsequently used to improve the contrast of the decoded image. © 2008 Optical Society of America.

Original language	English
Pages (from-to)	134-139
Journal	Applied Optics
Volume	48
Issue number	1
DOIs	https://doi.org/10.1364/AO.48.000134
Publication status	Published - 1 Jan 2009

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title = "Optical image coding with a circular Dammann grating",

abstract = "A circular Dammann grating in the front focal plane of a lens is used to generate an annular beam in the back focal plane to code an object by two-dimensional scanning. The coded image of the object is decoded digitally by convolving it with the same annular beam used to code the object. Simple inverse filtering is subsequently used to improve the contrast of the decoded image. {\textcopyright} 2008 Optical Society of America.",

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AU - Dobson, Kelly

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AB - A circular Dammann grating in the front focal plane of a lens is used to generate an annular beam in the back focal plane to code an object by two-dimensional scanning. The coded image of the object is decoded digitally by convolving it with the same annular beam used to code the object. Simple inverse filtering is subsequently used to improve the contrast of the decoded image. © 2008 Optical Society of America.

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M3 - RGC 21 - Publication in refereed journal

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SP - 134

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JO - Applied Optics

JF - Applied Optics

IS - 1

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Optical image coding with a circular Dammann grating

Abstract

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