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FRINGE-PATTERN ANALYSIS USING A SPATIAL PHASE-STEPPING METHOD WITH AUTOMATIC PHASE UNWRAPPING
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UNSPECIFIED (1995) FRINGE-PATTERN ANALYSIS USING A SPATIAL PHASE-STEPPING METHOD WITH AUTOMATIC PHASE UNWRAPPING. In: 3rd Applied Optics and Opto-electronics Conference, YORK, ENGLAND, SEP 05-08, 1994. Published in: MEASUREMENT SCIENCE & TECHNOLOGY, 6 (9). pp. 1250-1259. ISSN 0957-0233.
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Abstract
This paper presents a new method of fringe-pattern analysis by spatial phase stepping (sps). The sps method combines the computational simplicity of phase stepping with the single-image analysis capability of the Fourier transform method, The technique works by subdividing a linearized fringe pattern into three component images, from which the phase is calculated by a three-phase step algorithm, A computer simulation has been undertaken to demonstrate the theory and to enable an analysis of systematic errors. In addition, an experimental transonic flow field is solved by sps and a comparison is made with results derived using the Fourier transform method, The experiment also demonstrates the use of the minimum spanning tree phase-unwrapping strategy to create a continuous map of the whole transonic flow field.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Journal or Publication Title: | MEASUREMENT SCIENCE & TECHNOLOGY | ||||
Publisher: | IOP PUBLISHING LTD | ||||
ISSN: | 0957-0233 | ||||
Official Date: | September 1995 | ||||
Dates: |
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Volume: | 6 | ||||
Number: | 9 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 1250-1259 | ||||
Publication Status: | Published | ||||
Title of Event: | 3rd Applied Optics and Opto-electronics Conference | ||||
Location of Event: | YORK, ENGLAND | ||||
Date(s) of Event: | SEP 05-08, 1994 |
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