Comparative analysis on some filters for wrapped phase maps

Journal Article · Sat Oct 20 00:00:00 EDT 2007 · Applied Optics

DOI:https://doi.org/10.1364/AO.46.007412· OSTI ID:21013772

Kemao, Qian; Hoai Nam, Le Tran; Lin, Feng; Soon, Seah Hock

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.

• OSTI ID: 21013772
• Journal Information: Applied Optics, Vol. 46, Issue 30; Other Information: DOI: 10.1364/AO.46.007412; (c) 2007 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FILTERS
IMAGE PROCESSING
LEAST SQUARE FIT
MAPS
PARAMETRIC ANALYSIS