Articles

Phase unwrapping by a maximum cross‐amplitude spanning tree algorithm: a comparative study

[+] Author Affiliations
Takahide Abe

The University of Electro-Communications Department of Communication and Systems Engineering 1-5-1, Chofugaoka Chofu, Tokyo 182, Japan

Opt. Eng. 35(8), 2345-2351 (Aug 01, 1996). doi:10.1117/1.600810
History: Received May 15, 1995; Accepted Jan. 22, 1996
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Abstract

A comparative study is made of phase‐unwrapping algorithms that adopt either phase gradients or fringe amplitudes as a reliability measure in the selection of an unwrapping path. To compare with the minimum‐phase‐gradient spanning‐tree algorithm, a maximum cross‐amplitude spanning‐tree algorithm is proposed, which seeks a spanning tree that maximizes overall edge weights given by the cross‐amplitudes, i.e., the products of the fringe amplitudes of neighboring pixels. Noise immunity of the cross‐amplitude spanning‐tree algorithm is demonstrated by experiment and computer simulation. © 1996 Society of Photo−Optical Instrumentation Engineers.


Citation

Mitsuo Takeda and Takahide Abe
"Phase unwrapping by a maximum cross‐amplitude spanning tree algorithm: a comparative study", Opt. Eng. 35(8), 2345-2351 (Aug 01, 1996). ; http://dx.doi.org/10.1117/1.600810


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