Border Processing in Digital Holography by Extension of the Digital Hologram and Reduction of the Higher Spatial Frequencies
Applied Optics, Vol. 41, Issue 14, pp. 2621-2626 (2002)
http://dx.doi.org/10.1364/AO.41.002621
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Abstract
When a digital holographic reconstruction is performed, digital diffraction effects occur at the borders when the hologram amplitudes at the two opposite border points are different on each vertical or horizontal line. We propose a method of digital hologram extension to reduce such diffraction effects. The method consists of extending the size of the digital hologram and of filling the extended part by complex values that minimize, according to a numerical criterion, the highest spatial frequencies. The theoretical aspects of the method are given and the results from a demonstration are provided.
© 2002 Optical Society of America
OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(090.0090) Holography : Holography
(090.1760) Holography : Computer holography
(100.0100) Image processing : Image processing
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(180.0180) Microscopy : Microscopy
Citation
F. Dubois, O. Monnom, C. Yourassowsky, and J.-C. Legros, "Border Processing in Digital Holography by Extension of the Digital Hologram and Reduction of the Higher Spatial Frequencies," Appl. Opt. 41, 2621-2626 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-14-2621
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