Share Email Print
cover

Optical Engineering

Novel method to construct a quality map for phase unwrapping based on modulation and the phase gradient
Author(s): Yongjian Zhu; Zhu Luan; Qingguo Yang; Wei Lu; Liren Liu
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A novel method to construct a quality map, called modulation–phase-gradient variance (MPGV), is proposed, based on modulation and the phase gradient. The MPGV map is successfully applied to two phase-unwrapping algorithms—the improved weighted least square and the quality-guided unwrapping algorithm. Both simulated and experimental data testify to the validity of our proposed quality map. Moreover, the unwrapped-phase results show that the new quality map can have higher reliability than the conventional phase-derivative variance quality map in helping to unwrap noisy, low-modulation, and/or discontinuous phase maps.

Paper Details

Date Published: 1 October 2006
PDF: 5 pages
Opt. Eng. 45(10) 105601 doi: 10.1117/1.2361175
Published in: Optical Engineering Volume 45, Issue 10
Show Author Affiliations
Yongjian Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Zhu Luan, Shanghai Institute of Optics and Fine Mechanics (China)
Qingguo Yang, Shanghai Institute of Optics and Fine Mechanics (China)
Wei Lu, Changhai Institute of Optics and Fine Mechanics (United States)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


© SPIE. Terms of Use
Back to Top