Least-squares modal estimation of wrapped phases: application to phase unwrapping
Phase unwrapping continues to be an important step in those techniques that obtain the phase from Fourier transforms. We propose a fast two-dimensional phase-unwrapping algorithm that has been specially designed to be used as part of an iterative algorithm. It can be used also as a final step of a p...
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| Published in | Applied optics (2004) Vol. 42; no. 17; p. 3373 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
10.06.2003
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| Online Access | Get more information |
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| Summary: | Phase unwrapping continues to be an important step in those techniques that obtain the phase from Fourier transforms. We propose a fast two-dimensional phase-unwrapping algorithm that has been specially designed to be used as part of an iterative algorithm. It can be used also as a final step of a phase retrieval process with other unwrapping techniques. The algorithm consists of a modal least-squares estimation of the wrapped phase by using as inputs to the linear estimation the derivative of the wrapped phase. A theoretical description of the method, simulations, and experimental validations are presented. |
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| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.42.003373 |