title: Comparative analysis on some filters for wrapped phase maps.
abstract: Some effective filtering methods for wrapped phase maps, a regularized phase-tracking method (RPT) without the regularization term, a multiple-parameter least-square method (MPLS), a windowed Fourier ridges method (WFR), an autocorrelation function method (ACF), and a sine/cosine average filter (SCAF), are analyzed in order to establish their transversal relationship. The analysis shows that principles of the RPT, MPLS, WFR, and ACF are equivalent and the SCAF also leads to the WFR by some extension, which elegantly unifies all these methods for filtering unwrapped phase maps.
authors.affiliation: School of Computer Engineering, Nanyang Technological University, Singapore. mkmqian@ntu.edu.sg
authors.forename: Qian
authors.initials: Q
authors.lastname: Kemao
authors.forename: Le Tran Hoai
authors.initials: le TH
authors.lastname: Nam
authors.forename: Lin
authors.initials: L
authors.lastname: Feng
authors.forename: Seah Hock
authors.initials: SH
authors.lastname: Soon
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D003627:Data Interpretation, Statistical; D005583:Fourier Analysis; D016018:Least-Squares Analysis; D015233:Models, Statistical; D055095:Optics and Photonics; D012815:Signal Processing, Computer-Assisted; D012984:Software