Analysis of in-line Fresnel holograms via chirp separation

Mehmet T. Ozgen

doi:10.1117/1.2182147

1 March 2006 Analysis of in-line Fresnel holograms via chirp separation

Mehmet T. Ozgen

Author Affiliations +

Optical Engineering, Vol. 45, Issue 3, 035801 (March 2006). https://doi.org/10.1117/1.2182147

Abstract

A two-step computational technique for object reconstruction from digitized in-line Fresnel holograms of particle fields is proposed that eliminates the preliminary stage of depth extraction, when the goal is recovery of only the object cross-sectional shape. The first step involves a space/spatial-frequency domain chirp separation algorithm based on a two-dimensional (2-D) separable space-varying filtering scheme to separate a hologram into its single-object components. As the second step, a recently proposed Fourier synthesis technique is applied to separated components to reveal the cross-sectional morphology of individual 2-D objects, if they are sufficiently small as compared to the hologram size. The proposed method and a modified version of it based on 1-D filtering for performance improvement are illustrated on synthesized holograms. These simulations indicate that closely spaced planar objects can be recovered without significant dispersion, and back-to-back objects can also be reconstructed with tolerable leakage if they are sufficiently apart.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Mehmet T. Ozgen "Analysis of in-line Fresnel holograms via chirp separation," Optical Engineering 45(3), 035801 (1 March 2006). https://doi.org/10.1117/1.2182147

Published: 1 March 2006

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available