The comparison of different temporal phase analysis algorithms in optical dynamic measurement
In recent years, optical interferometry has been applied to whole-field, non-contact measurement of vibrating or continuously-deforming objects. In optical dynamic measurement, an interferogram sequence is obtained by a highspeed camera. Retrieving dynamic phase values from this interferogram sequen...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2010
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| Online Access: | https://hdl.handle.net/10356/91915 http://hdl.handle.net/10220/6480 |
| _version_ | 1811692568792006656 |
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| author | Miao, Hong Fu, Yu |
| author2 | Ninth International Symposium on Laser Metrology. |
| author_facet | Ninth International Symposium on Laser Metrology. Miao, Hong Fu, Yu |
| author_sort | Miao, Hong |
| collection | NTU |
| description | In recent years, optical interferometry has been applied to whole-field, non-contact measurement of vibrating or continuously-deforming objects. In optical dynamic measurement, an interferogram sequence is obtained by a highspeed camera. Retrieving dynamic phase values from this interferogram sequence leads to a precise measurement of different kinematic and deformation parameters of a continuously-deforming or vibrating object. In this paper, this interferogram sequence is classified into two types: (i) intensity variation; and (ii) exponential phase signal. Different temporal phase retrieving techniques, such as Hilbert transform, Fourier transform, windowed Fourier transform and wavelet transform are applied to extract the phase from a simulated signal. The advantage and drawback of each algorithm are discussed. In addition, a new method based on the combination of Fourier transform and windowed Fourier transform is proposed and the simulation shows it can eliminate the noise and evaluate the phase more accurately. |
| first_indexed | 2024-10-01T06:37:52Z |
| format | Conference Paper |
| id | ntu-10356/91915 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:37:52Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/919152020-09-26T22:15:56Z The comparison of different temporal phase analysis algorithms in optical dynamic measurement Miao, Hong Fu, Yu Ninth International Symposium on Laser Metrology. Temasek Laboratories DRNTU::Science::Physics::Optics and light In recent years, optical interferometry has been applied to whole-field, non-contact measurement of vibrating or continuously-deforming objects. In optical dynamic measurement, an interferogram sequence is obtained by a highspeed camera. Retrieving dynamic phase values from this interferogram sequence leads to a precise measurement of different kinematic and deformation parameters of a continuously-deforming or vibrating object. In this paper, this interferogram sequence is classified into two types: (i) intensity variation; and (ii) exponential phase signal. Different temporal phase retrieving techniques, such as Hilbert transform, Fourier transform, windowed Fourier transform and wavelet transform are applied to extract the phase from a simulated signal. The advantage and drawback of each algorithm are discussed. In addition, a new method based on the combination of Fourier transform and windowed Fourier transform is proposed and the simulation shows it can eliminate the noise and evaluate the phase more accurately. Published version 2010-11-29T01:18:21Z 2019-12-06T18:14:04Z 2010-11-29T01:18:21Z 2019-12-06T18:14:04Z 2008 2008 Conference Paper Miao, H., & Fu, Y. (2008). The comparison of different temporal phase analysis algorithms in optical dynamic measurement. Ninth International Symposium on Laser Metrology, 7155, pp.1-10. https://hdl.handle.net/10356/91915 http://hdl.handle.net/10220/6480 10.1117/12.814544 en Copyright 2008 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. 10 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Optics and light Miao, Hong Fu, Yu The comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| title | The comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| title_full | The comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| title_fullStr | The comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| title_full_unstemmed | The comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| title_short | The comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| title_sort | comparison of different temporal phase analysis algorithms in optical dynamic measurement |
| topic | DRNTU::Science::Physics::Optics and light |
| url | https://hdl.handle.net/10356/91915 http://hdl.handle.net/10220/6480 |
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