Phase unwrapping of interferometric fringes based on a mutual information quality map and phase recovery strategy

Xian Wang; Suping Fang; Xindong Zhu; Yichao Li

doi:10.1117/1.OE.57.11.114108

23 November 2018 Phase unwrapping of interferometric fringes based on a mutual information quality map and phase recovery strategy

Xian Wang, Suping Fang, Xindong Zhu, Yichao Li

Author Affiliations +

Optical Engineering, Vol. 57, Issue 11, 114108 (November 2018). https://doi.org/10.1117/1.OE.57.11.114108

Abstract

Phase unwrapping in regions of abnormal fringes caused by noise, aliasing, fracturing, and the presence of mass discontinuous phases of unwrapped results remains an unresolved issue. We present an approach that combines an iterated discontinuous phase recovery strategy and a quality-guided algorithm based on mutual information quality maps. First, the quality-guided unwrapping algorithm based on mutual information is applied, and the results of the discontinuous phase region are excluded. Second, the remainder of the continuous phase region is rewrapped and unwrapped iteratively until there are no discontinuities in the result. Finally, the discontinuous region is recovered by a continuity operation. The method is validated through both simulations and experiments, thereby demonstrating that the proposed algorithm is robust in the presence of abnormal fringes and that the discontinuous phase can be reduced significantly.

Citation Download Citation

Xian Wang, Suping Fang, Xindong Zhu, and Yichao Li "Phase unwrapping of interferometric fringes based on a mutual information quality map and phase recovery strategy," Optical Engineering 57(11), 114108 (23 November 2018). https://doi.org/10.1117/1.OE.57.11.114108

Received: 28 August 2018; Accepted: 1 November 2018; Published: 23 November 2018

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available