Maycock, Jonathan and McElhinney, Conor P. and Hennelly, Bryan M. and Naughton, Thomas J. and McDonald, John and Javidi, Bahram (2006) Reconstruction of partially occluded objects encoded in three-dimensional scenes by using digital holograms. Applied Optics, 45 (13). pp. 2975-2985. ISSN 0003-6935

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Abstract

We propose a task-specific digital holographic capture system for three-dimensional scenes, which can reduce the amount of data sent from the camera system to the receiver and can effectively reconstruct partially occluded objects. The system requires knowledge of the object of interest, but it does not require a priori knowledge of either the occlusion or the distance the object is from the camera. Subwindows of the camera-plane Fresnel field are digitally propagated to reveal different perspectives of the scene, and these are combined to overcome the unknown foreground occlusions. The nature of the occlusions and the effect of subwindows are analyzed thoroughly by using the Wigner distribution function. We demonstrate that a careful combination of reconstructions from subwindows can reveal features that are not apparent in a reconstruction from the whole hologram. We provide results by using optically captured digital holograms of real-world objects and simulated occlusions.

Item Type:	Article
Additional Information:	Postprint version of article. The definitive version of this article is available at http://dx.doi.org/10.1364/AO.45.002975 © 2006 Optical Society of America The authors thank Enrique Tajahuerce and Yann Frauel for use of their digital hologram data. This paper has emanated from research conducted with the financial support of the Science Foundation Ireland, Enterprise Ireland, and the Embark Initiative of the Irish Research Council for Science, Engineering, and Technology.
Keywords:	Reconstruction; partially occluded objects; three-dimensional scenes; using digital holograms; digital holographic capture system;
Academic Unit:	Faculty of Science and Engineering > Computer Science Faculty of Science and Engineering > Electronic Engineering
Item ID:	5789
Depositing User:	Dr. Bryan Hennelly
Date Deposited:	09 Feb 2015 16:57
Journal or Publication Title:	Applied Optics
Publisher:	Optical Society of America
Refereed:	Yes
Funders:	Science Foundation Ireland (SFI), Enterprise Ireland (EI), Irish Research Council for Science Engineering and Technology (IRCSET)
URI:	http://dx.doi.org/10.1364/AO.45.002975
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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