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Optical Engineering

Phase unwrapping by a maximum cross-amplitude spanning tree algorithm: a comparative study
Author(s): Mitsuo Takeda; Takahide Abe
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Paper 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 crossamplitudes, 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.

Paper Details

Date Published: 1 August 1996
PDF: 7 pages
Opt. Eng. 35(8) doi: 10.1117/1.600810
Published in: Optical Engineering Volume 35, Issue 8
Show Author Affiliations
Mitsuo Takeda, Univ. of Electro-Communications (Japan)
Takahide Abe, Fuji Xerox Co., Ltd. (Japan)

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