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
收藏
页码：4543 / 4550
页数：8
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