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  • Adaptive Optics: Analysis and Methods/Computational Optical Sensing and Imaging/Information Photonics/Signal Recovery and Synthesis Topical Meetings on CD-ROM
  • OSA Technical Digest (CD) (Optica Publishing Group, 2007),
  • paper DTuD7
  • https://doi.org/10.1364/DH.2007.DTuD7

Filtering of Phase-difference Images in Digital Holography

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Abstract

By means of the phase difference of two phase-contrast images obtained with digital holography, it is possible to measure the topography and/or deformation of macroscopic objects. Owing to the roughness of the object surface this phase-difference images present a high-contrast speckle noise that ruins, the always required, phase-unwrapping process. We present the development and implementation of a phase-shifting like algorithm for filtering phase-difference images. We show that its performance is superior compare to the known approaches, like low-pass and median filters

© 2007 Optical Society of America

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