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

被引：56

作者：

Takeda, M

Abe, T

机构：

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

来源：

OPTICAL ENGINEERING | 1996年 / 35卷 / 08期

关键词：

interferometry; fringe analysis; optical metrology; phase unwrapping;

D O I：

10.1117/1.600810

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 1996 Society of Photo-Optical Instrumentation Engineers.

引用

页码：2345 / 2351

页数：7

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