McElhinney, Conor P. and Hennelly, Bryan M. and Naughton, Thomas J.
(2008)
Twin-image Reduction in Inline Digital Holography using an Object Segmentation Heuristic.
Journal of Physics: Conference Series, 139 (1).
012014-1-012014-5.
ISSN 1742-6588
Abstract
We present a digital image processing heuristic for the removal of the twin-image in inline digital holograms. Typically, the unwanted twin manifests itself as visible corruptive noise in the reconstruction plane. We reconstruct the unwanted twin-image at its in-focus plane and suppress it by first finding the boundary of the object, and then removing the optical energy within this boundary. In this plane, the wanted twin-image optical energy is largely dispersed outside this boundary and so it is retained. The heuristic's effectiveness is demonstrated using a digital hologram of a real-world object.
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