Weighted least-squares phase unwrapping algorithm based on a non-interfering image of an object

被引：38

作者：

Wang, Xian ^{[1
]}

Fang, Suping ^{[1
]}

Zhu, Xindong ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

APPLIED OPTICS | 2017年 / 56卷 / 15期

基金：

中国国家自然科学基金;

关键词：

MAP; INTERFEROMETRY; EFFICIENT;

D O I：

10.1364/AO.56.004543

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Conventional quality maps for weighted least-squares phase unwrapping are not appropriate in regions of abnormal fringes. In this paper, the use of a non-interfering image of an object for a reliability map is proposed for robust phase unwrapping. First, the conventional weighted least-squares algorithm is applied, and the unreliable region is detected. Then, the unreliable region is unwrapped iteratively using the non-interfering image of the object. Finally, both phase maps are combined and smoothed by a continuity operation. Experimental results show that the proposed algorithm is appropriate for unwrapping phase maps of abnormal fringes. (C) 2017 Optical Society of America

引用

页码：4543 / 4550

页数：8