Abstract

When a digital hologram is reconstructed, only points located at the reconstruction distance are in focus. We have developed a novel technique for creating an in-focus image of the macroscopic objects encoded in a digital hologram. This extended focused image is created by combining numerical reconstructions with depth information extracted by using our depth-from-focus algorithm. To our knowledge, this is the first technique that creates extended focused images of digital holograms encoding macroscopic objects. We present results for digital holograms containing low- and high-contrast macroscopic objects.

© 2008 Optical Society of America

Three-dimensional image reconstruction of macroscopic objects from a single digital hologram using stereo disparity

Baturay Özgürün, Duygu Önal Tayyar, Kaan Özer Agiş, and Meriç Özcan
Appl. Opt. 56(13) F84-F90 (2017)

Extended focused image in microscopy by digital holography

Pietro Ferraro, Simonetta Grilli, Domenico Alfieri, Sergio De Nicola, Andrea Finizio, Giovanni Pierattini, Bahram Javidi, Giuseppe Coppola, and Valerio Striano
Opt. Express 13(18) 6738-6749 (2005)

Extended focused imaging and depth map reconstruction in optical scanning holography

Zhenbo Ren, Ni Chen, and Edmund Y. Lam
Appl. Opt. 55(5) 1040-1047 (2016)

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

Mark L. Tachiki, Masahide Itoh, and Toyohiko Yatagai
Appl. Opt. 47(19) D144-D153 (2008)

Compression of digital holograms for three-dimensional object reconstruction and recognition

Thomas J. Naughton, Yann Frauel, Bahram Javidi, and Enrique Tajahuerce
Appl. Opt. 41(20) 4124-4132 (2002)