Two-dimensional Phase Unwrapping for Digital Holography

Report No. ARL-TR-6225
Authors: Neal K. Bambha, Justin R. Bickford, and Karl K. Klett, Jr.
Date/Pages: September 2012; 18 pages
Abstract: This work describes a method for eliminating the mathematical ambiguity in the phase map for digital holographic images. The technique uses a pre-processing step to smooth the amplitude data and reduce noise in the phase data. The unwrapping algorithm uses both phase gradient calculations and an amplitude measure to determine the reliability of a given data point, and uses a non-continuous path following approach.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2012