Abstract

The searching and recovering of the correct reconstruction distance in digital holography (DH) can be a cumbersome and subjective procedure. Here we report on an algorithm for automatically estimating the in-focus image and recovering the correct reconstruction distance for speckle holograms. We have tested the approach in determining the reconstruction distances of stretched digital holograms. Stretching a hologram with a variable elongation parameter makes it possible to change the in-focus distance of the reconstructed image. In this way, the proposed algorithm can be verified at different distances by dispensing the recording of different holograms. Experimental results are shown with the aim of demonstrating the usefulness of the proposed method, and a comparative analysis has been performed with respect to other existing algorithms developed for DH.

© 2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Automatic focusing for multisectional objects in digital holography using the structure tensor

Zhenbo Ren, Ni Chen, and Edmund Y. Lam
Opt. Lett. 42(9) 1720-1723 (2017)

Talbot self-image effect in digital holography and its application to spectrometry

Sergio De Nicola, Pietro Ferraro, Giuseppe Coppola, Andrea Finizio, Giovanni Pierattini, and Simonetta Grilli
Opt. Lett. 29(1) 104-106 (2004)

Fast autofocusing in digital holography using the magnitude differential

Meng Lyu, Caojin Yuan, Dayan Li, and Guohai Situ
Appl. Opt. 56(13) F152-F157 (2017)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription