An Algorithm for Interferometric Image Processing of Interferometric Particle Imaging

Qieni, 吕且妮 Lü; Baozhen, 葛宝臻 Ge; Yiliang, 陈益亮 Chen; Yimo, 张以谟 Zhang

doi:10.3788/aos201131.0412009

Cited by 3 publications

(1 citation statement)

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“…where ⊗ denotes correlation, and the peak value of the cross-correlation function of equation ( 7) is the center position of the particle image. Here, we name this algorithm the wavelet-matched filter (WTF) algorithm; it is successful in detecting the particle center of a circular interferogram [20].…”

Section: Detection Of Particle Centermentioning

confidence: 99%

Linear interferometric image processing for analysis of a particle in a volume

Lü¹,

Xiang²,

Lü³

et al. 2014

J. Opt.

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A method of extracting the number of fringes/fringe spacing of compression interferogram based on a wavelet-matched filter and Fourier transform technique is proposed, and sub-pixel accuracy of the extracted frequency is achieved by the modified Rife algorithm. Both numerical simulation and experimental measurement are carried out to verify the performance of the method. The measurement uncertainty is ±1.118 µm and the absolute error is 1.873 µm for standard particles of diameter 45 µm. The research results show that the algorithm presented in this paper is feasible, and is promising for application to a high-density spray field.

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Section: Detection Of Particle Centermentioning

confidence: 99%

Linear interferometric image processing for analysis of a particle in a volume

Lü¹,

Xiang²,

Lü³

et al. 2014

J. Opt.

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show abstract

High-accuracy particle sizing by interferometric particle imaging

Lü

Wenhua

Lü

et al. 2014

Optics Communications

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High-accuracy simultaneous measurement of particle size and location using interferometric out-of-focus imaging

Lü¹,

Kan²,

Ge³

et al. 2016

Opt. Express

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A method based on unidirectional gradient-matched algorithm and Fourier transform technique is proposed to simultaneously extract the location and the number of fringes/fringe spacing of a particle interferogram. The position coordinate (x,y) of a particle can be determined with high accuracy because of the elimination of the fringe within the particle fringe pattern. Furthermore, the method can be employed to achieve sub-pixel frequency extraction when combined with an improved Rife algorithm. The performance of the method has been verified by numerical simulations and experimental measurements. The results suggest that the method presented here is highly beneficial to applications such as spray, in accurately measuring both the particle size and its location.

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An Algorithm for Interferometric Image Processing of Interferometric Particle Imaging

Cited by 3 publications

References 0 publications

Linear interferometric image processing for analysis of a particle in a volume

Linear interferometric image processing for analysis of a particle in a volume

High-accuracy particle sizing by interferometric particle imaging

High-accuracy simultaneous measurement of particle size and location using interferometric out-of-focus imaging

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