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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 1 — Jan. 1, 2009
  • pp: 134–139

Optical image coding with a circular Dammann grating

Kyu B. Doh, Kelly Dobson, Ting-Chung Poon, and Po Sheun Chung  »View Author Affiliations

Applied Optics, Vol. 48, Issue 1, pp. 134-139 (2009)

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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

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.4560) Fourier optics and signal processing : Data processing by optical means
(100.0100) Image processing : Image processing

ToC Category:
Image Processing

Original Manuscript: July 2, 2008
Revised Manuscript: November 11, 2008
Manuscript Accepted: November 18, 2008
Published: December 22, 2008

Kyu B. Doh, Kelly Dobson, Ting-Chung Poon, and Po Sheun Chung, "Optical image coding with a circular Dammann grating," Appl. Opt. 48, 134-139 (2009)

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