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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 19 — Jul. 1, 2008
  • pp: D144–D153

Simultaneous depth determination of multiple objects by focus analysis in digital holography

Mark L. Tachiki, Masahide Itoh, and Toyohiko Yatagai  »View Author Affiliations

Applied Optics, Vol. 47, Issue 19, pp. D144-D153 (2008)

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Focus analysis techniques from computer vision are applied to digital holography to determine the depth (range) of multiple objects and their surfaces from a single hologram capture. With this method the depths of objects can be determined from a single hologram capture without the need for manual focusing and without prior information on object location. Variance and the Laplacian of Gaussian are analyzed as focus measures, and techniques are proposed for focus plane determination from the focus measure curves. The algorithm is described in detail and demonstrated through simulation and optical experiment.

© 2008 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(100.0100) Image processing : Image processing
(110.0110) Imaging systems : Imaging systems
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(150.0150) Machine vision : Machine vision

Original Manuscript: October 1, 2007
Revised Manuscript: February 21, 2008
Manuscript Accepted: March 13, 2008
Published: April 10, 2008

Virtual Issues
Vol. 3, Iss. 8 Virtual Journal for Biomedical Optics

Mark L. Tachiki, Masahide Itoh, and Toyohiko Yatagai, "Simultaneous depth determination of multiple objects by focus analysis in digital holography," Appl. Opt. 47, D144-D153 (2008)

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