Source:http://linkedlifedata.com/resource/pubmed/id/12502299
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
35
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| pubmed:dateCreated |
2002-12-27
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| pubmed:abstractText |
A new, to our knowledge, two-dimensional phase-unwrapping algorithm is proposed. The algorithm, which is based on the global continuity of physical information (e.g. the three-dimensional surface profile of an object) being measured, uses the principle of least-phase difference to rectify errors caused by an erroneous 2pi-phase jump in the initial unwrapped phase map obtained by the conventional phase-unwrapping method. Experimental results show that the proposed algorithm works well on a phase map that contains error sources, such as noises, phase discontinuity of more than pi, and insufficient sampling. Moreover, the algorithm is most suitable for unwrapping a phase map generated during shape measurement with a step-change surface on the test object, which is usually a critical problem in shape measurement.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Dec
|
| pubmed:issn |
0003-6935
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
10
|
| pubmed:volume |
41
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
7422-8
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| pubmed:dateRevised |
2003-11-4
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| pubmed:year |
2002
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| pubmed:articleTitle |
Proposed algorithm for phase unwrapping.
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| pubmed:affiliation |
Department of Engineering Mechanics, Southeast University, 2 Sipailou Street, Nanjing 210096, China.
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| pubmed:publicationType |
Journal Article
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