Source:http://linkedlifedata.com/resource/pubmed/id/15751686
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
|
| pubmed:dateCreated |
2005-3-8
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| pubmed:abstractText |
A novel temporal phase-analysis technique that is based on wavelet analysis and a temporal carrier is presented. To measure displacement on a vibrating object by using electronic speckle pattern interferometry, one captures a series of speckle patterns, using a high-speed CCD camera. To avoid ambiguity in phase estimation, a temporal carrier is generated by a piezoelectric transducer stage in the reference beam of the interferometer. The intensity variation of each pixel on recorded images is then analyzed along the time axis by a robust mathematical tool, i.e., a complex Morlet wavelet transform. After the temporal carrier is removed, the absolute displacement of a vibrating object is obtained without the need for temporal or spatial phase unwrapping. The results obtained by a wavelet transform are compared with those from a temporal Fourier transform.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Feb
|
| pubmed:issn |
0003-6935
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| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
20
|
| pubmed:volume |
44
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| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
959-65
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| pubmed:year |
2005
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| pubmed:articleTitle |
Wavelet analysis of speckle patterns with a temporal carrier.
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| pubmed:affiliation |
Department of Mechanical Engineering, National University of Singapore, Singapore 119260.
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| pubmed:publicationType |
Journal Article
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