Peer-Reviewed Journal Details
Mandatory Fields
Maycock, J;McDonald, JB;Hennelly, BM
2013
July
Optics Communications
Speckle reduction of reconstructions of digital holograms using three dimensional filtering
Published
6 ()
Optional Fields
OBJECT RECOGNITION SYNTHETIC-APERTURE NUMERICAL RECONSTRUCTION FAST ALGORITHMS MICROSCOPY NOISE IMPROVEMENT IMAGES
300
142
155
We report on a new digital signal processing technique that reduces speckle in reconstructions of digital holograms. This is achieved by convolving the three dimensional intensity pattern (the intensity of the propagated DH at a series of different distances) with a 3D point spread function in all three dimensions (x,y,z). It is based on the fact that the addition of different independent speckle images on an intensity basis reduces the speckle content. We provide quantitative results in terms of speckle index and resolution, and show that filtering in the z direction has the added benefit of an increase in the depth of focus of the digital hologram reconstruction. (C) 2013 Elsevier B.V. All rights reserved.
AMSTERDAM
0030-4018
10.1016/j.optcom.2013.02.062
Grant Details