Share Email Print
cover

Proceedings Paper

DC term filtering techniques in digital holography
Author(s): Jorge Ivan Garcia-Sucerquia; J. A. Herrera Ramirez; Daniel Velasquez Prieto
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In numerical hologram reconstruction like in optical holography, there exist different diffraction orders, which many times produce difficulties for the image visualizations. In numerical reconstruction, the filtering of the DC term, or zero order diffraction, provides an improved utilization of the dynamic range of the visualization systems, which is needed for the right displaying purposes of reconstructed images. In the case of the in-line set-ups, the zero diffraction order has even more devastating effects because it does not allow reconstructing the images itself as in Gabor's holograms, so it is necessary to attempt a filtering of this DC term. In this work is shown a qualitative assessment of different techniques of DC term filtering applied to numerical reconstruction of Fresnel's holograms recorded by means of off-line set-ups.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.591647
Show Author Affiliations
Jorge Ivan Garcia-Sucerquia, Univ. Nacional de Colombia Sede Medellin (Colombia)
J. A. Herrera Ramirez, Univ. Nacional de Colombia Sede Medellin (Colombia)
Daniel Velasquez Prieto, Univ. EAFIT (Colombia)


Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

© SPIE. Terms of Use
Back to Top