Novel method to construct a quality map for phase unwrapping based on modulation and the phase gradient

Yongjian Zhu; Zhu Luan; Qingguo Yang; Wei Lu; Liren Liu

doi:10.1117/1.2361175

1 October 2006 Novel method to construct a quality map for phase unwrapping based on modulation and the phase gradient

Yongjian Zhu, Zhu Luan, Qingguo Yang, Wei Lu, Liren Liu

Author Affiliations +

Optical Engineering, Vol. 45, Issue 10, 105601 (October 2006). https://doi.org/10.1117/1.2361175

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.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Yongjian Zhu, Zhu Luan, Qingguo Yang, Wei Lu, and Liren Liu "Novel method to construct a quality map for phase unwrapping based on modulation and the phase gradient," Optical Engineering 45(10), 105601 (1 October 2006). https://doi.org/10.1117/1.2361175

Published: 1 October 2006

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