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Phase unwrapping for noisy phase maps using rotational compensator with virtual singular points
| Title: | Phase unwrapping for noisy phase maps using rotational compensator with virtual singular points |
| Authors: | Tomioka, Satoshi Browse this author | | Heshmat, Samia Browse this author | | Miyamoto, Naoki Browse this author | | Nishiyama, Shusuke Browse this author |
| Keywords: | Noise in imaging systems | | Holographic interferometry | | Interferometric imaging | | Phase unwrapping | | Phase measurement | | Coherence and statistical optics | | Holography | | Instrumentation, measurement, and metrology | | Image processing | | Imaging systems |
| Issue Date: | 2010 |
| Publisher: | Optical Society of America |
| Journal Title: | Applied Optics |
| Volume: | 49 |
| Issue: | 25 |
| Start Page: | 4735 |
| End Page: | 4745 |
| Publisher DOI: | 10.1364/AO.49.004735 |
| PMID: | 20820215 |
| Abstract: | In the process of phase unwrapping for an image obtained by an interferometer or in-line holography, noisy image data may pose difficulties. Traditional phase unwrapping algorithms used to estimate a two-dimensional phase distribution include much estimation error, due to the effect of singular points. This paper introduces an accurate phase-unwrapping algorithm based on three techniques: a rotational compensator, unconstrained singular point positioning, and virtual singular points. The new algorithm can confine the effect of singularities to the local region around each singular point. The phase-unwrapped result demonstrates that accuracy is improved, compared with past methods based on the least-squares approach. |
| Rights: | © 2010 Optical Society of America, Inc. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/44812 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 富岡 智
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