The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Quantitative dynamic cellular imaging based on 3d unwrapped optical coherence phase microscopy
Author:	Gunasekar, ArunKumar
View Online:	njit-etd2022-003 (ix, 30 pages ~ 2.6 MB pdf)
Department:	Department of Electrical and Computer Engineering
Degree:	Master of Science
Program:	Electrical Engineering
Document Type:	Thesis
Advisory Committee:	Liu, Xuan (Committee chair) Ko, Dong Kyun (Committee member) Zhang, Yuanwei (Committee member)
Date:	2022-05
Keywords:	Phase wrapping Phase wrapping artifacts 3D phase unwrapping 3D phase data
Availability:	Unrestricted
Abstract:	Phase wrapping artifacts are frequently encountered in phase resolved imaging and sensing techniques based on interferometry. When the value of the actual phase (φ) ranges beyond (-π, π], the extracted phase value (wrapped phase Ψ) is artificially increased or decreased by a multiple of 2π. In this study, we develop a 3D phase unwrapping method that exploits the correlation of 3D phase data (φ(x,y,t)) over the other dimension (t). We validate our 3D unwrapping method using simulated data, as well as experimental data obtained by optically computed phase microscopy (OCPM) recently developed in our lab. Our results show that the 3D phase unwrapping method achieves accurate and robust reconstruction of phase φ(x,y,t). The application of the 3D phase unwrapping method is not limited to OCPM. Instead, it is a generic approach that can be used for other phase imaging modalities.