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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 1533–1550

Optical three-dimensional refocusing from elemental images based on a sifting property of the periodic δ-function array in integral-imaging

Jae-Young Jang, Donghak Shin, and Eun-Soo Kim  »View Author Affiliations

Optics Express, Vol. 22, Issue 2, pp. 1533-1550 (2014)

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We propose a novel approach to optically refocus three-dimensional (3-D) objects on their real depth from the captured elemental image array (EIA) by using a sifting property of the periodic δ-function array (PDFA) in integral-imaging. By convolving the PDFAs whose spatial periods correspond to each object’s depth with the sub-image array (SIA) transformed from the EIA, a set of spatially filtered-SIAs (SF-SIAs) for each object’s depth can be extracted. These SF-SIAs are then inverse-transformed into the corresponding versions of the EIAs, and from these, 3-D objects with their own perspectives can be reconstructed to be refocused on their depth in the space. The feasibility of the proposed method has been confirmed through optical experiments as well as ray-optical analysis.

© 2014 Optical Society of America

OCIS Codes
(110.4190) Imaging systems : Multiple imaging
(110.6880) Imaging systems : Three-dimensional image acquisition
(150.5670) Machine vision : Range finding

ToC Category:
Imaging Systems

Original Manuscript: November 8, 2013
Revised Manuscript: December 27, 2013
Manuscript Accepted: January 9, 2014
Published: January 15, 2014

Jae-Young Jang, Donghak Shin, and Eun-Soo Kim, "Optical three-dimensional refocusing from elemental images based on a sifting property of the periodic δ-function array in integral-imaging," Opt. Express 22, 1533-1550 (2014)

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