Dual-wavelength image-plane digital holography for dynamic measurement
Dual-wavelength image-plane digital holography for dynamic measurement
复制标题
用于动态测量的双波长像面数字全息术
DOI:
10.1016/j.optlaseng.2008.10.002
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发表时间:
2009-05
影响因子:
4.6
通讯作者:
中科院分区:
文献类型:
--
作者:
A dual-wavelength image-plane digital holography, combined with a windowed Fourier analysis, is presented for dynamic measurement of a vibrating object. In order to expand the range of the velocity measurement, the object is simultaneously illuminated by two lasers with different wavelengths. A sequence of digital holograms of a vibrating object is captured by a CCD camera and two wrapped phase maps are retrieved from each digital hologram. At each instant, a new phase distribution with a synthetic wavelength is obtained by subtracting these two wrapped phase maps. A windowed Fourier analysis is then applied spatially and temporally to retrieve the high-precision displacement and velocity of the tested object. Experimental results show the requirement on the camera capture frequency is reduced by the proposed method.
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影响因子:
1.9
作者:
R. Onodera;Y. Ishii
通讯作者:
R. Onodera;Y. Ishii
影响因子:
1.9
作者:
R. Onodera;Y. Ishii
通讯作者:
R. Onodera;Y. Ishii
DOI:
10.1016/b978-0-12-466606-1.x5000-4
发表时间:
1998
期刊:
--
影响因子:
--
作者:
S. Mallat
通讯作者:
S. Mallat
DOI:
10.1117/12.638915
发表时间:
2005-08
期刊:
--
影响因子:
--
作者:
M. Ohlídal;Ludek Šír;M. Jákl;I. Ohlídal
通讯作者:
M. Ohlídal;Ludek Šír;M. Jákl;I. Ohlídal
影响因子:
1.9
作者:
G. Pedrini;H. Tiziani;M. Gusev
通讯作者:
G. Pedrini;H. Tiziani;M. Gusev