Wavelet analysis of speckle patterns with a temporal carrier

被引：47

作者：

Fu, Y ^{[1
]}

Tay, CJ ^{[1
]}

Quan, CG ^{[1
]}

Miao, H ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mech Engn, Singapore 119260, Singapore

来源：

APPLIED OPTICS | 2005年 / 44卷 / 06期

关键词：

D O I：

10.1364/AO.44.000959

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2005 Optical Society of America.

引用

页码：959 / 965

页数：7

共 24 条

[11] Phase-shifted dynamic speckle pattern interferometry at 1 kHz [J].

Huntley, JM ;

Kaufmann, GH ;

Kerr, D .

APPLIED OPTICS, 1999, 38 (31) :6556-6563

[12] TEMPORAL PHASE-UNWRAPPING ALGORITHM FOR AUTOMATED INTERFEROGRAM ANALYSIS [J].

HUNTLEY, JM ;

SALDNER, H .

APPLIED OPTICS, 1993, 32 (17) :3047-3052

[13]

HUNTLEY JM, 2000, TRENDS OPTICAL NONDE, P37

[14] Speckle interferometry with temporal phase evaluation for measuring large-object deformation [J].

Joenathan, C ;

Franze, B ;

Haible, P ;

Tiziani, HJ .

APPLIED OPTICS, 1998, 37 (13) :2608-2614

[15] Novel temporal Fourier transform speckle pattern shearing interferometer [J].

Joenathan, C ;

Franze, B ;

Haible, P ;

Tiziani, HJ .

OPTICAL ENGINEERING, 1998, 37 (06) :1790-1795

[16]

Joenathan C, 1998, J MOD OPTIC, V45, P1975, DOI 10.1080/09500349808231715

[17] Phase measurement in temporal speckle pattern interferometry using the Fourier transform method with and without a temporal carrier [J].

Kaufmann, GH .

OPTICS COMMUNICATIONS, 2003, 217 (1-6) :141-149

[18] Phase measurement in temporal speckle pattern interferometry: comparison between the phase-shifting and the Fourier transform methods [J].

Kaufmann, GH ;

Galizzi, GE .

APPLIED OPTICS, 2002, 41 (34) :7254-7263

[19] Continual deformation analysis with scanning phase method and time sequence phase method in temporal speckle pattern interferometry [J].

Li, XD ;

Tao, G ;

Yang, YZ .

OPTICS AND LASER TECHNOLOGY, 2001, 33 (01) :53-59

[20]

PRESS WH, 1992, NUMERICAL RECIPES C, pCH13

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