Deformation of Digital Holograms for Full Control of Focus and for Extending the Depth of Field

Chapter

Abstract

We show here that through an adaptive deformation of a digital hologram, it is possible to manage the depth of focus in 3D imaging reconstruction. For Fresnel holograms, a linear deformation is applied to the original hologram with the aim to change the reconstruction distance. On the other hand, by a quadratic deformation of spatial coordinates of a digital hologram acquired in Fourier configuration, it is possible to recover the extended focus image (EFI) of a tilted object.

Notes

Acknowledgements

This research is funded by the European Community’s Seventh Framework Program FP7/2007–2013 under grant agreement 216105.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.CNR – Istituto Nazionale di OtticaPozzuoliItaly

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