Information Extraction Methods Based on Variational Image Decomposition for Electronic Speckle Pattern Interferometry

Fig. 1. ESPI fringe images with various densities obtained in experiment. (a) Low-density fringe image; (b) high-density fringe image; (c)-(f) variable-density fringe images

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Fig. 2. Filtering results of ESPI fringe images corresponding to different models. (a) BL-Shearlet model; (b) Hilbert-Shearlet model; (c) TV-Hilbert-Shearlet model; (d) TV-G-Shearlet model; (e)(f) BL-Hilbert-Shearlet model

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Fig. 3. ESPI fringe image obtained by experiment

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Fig. 4. Computed results of fringe orientation and fringe density by four methods for Fig. 3. (a)(b) GM; (c)(d) ADM; (e)(f) FFTM; (g)(h) VIDM

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Fig. 5. ESPI fringe image obtained by experiment

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Fig. 6. Skeleton lines and corresponding superposition results of Fig. 5 obtained by different methods. (a)(b) CGVFs; (c)(d) OCGVFs; (e)(f) ADGVFs; (g)(h) VIDGVFs

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Table 1. Parameters and computation times of different methods for fringe orientation
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Table 1. Parameters and computation times of different methods for fringe orientation
Method Figure Parameter Time /s
GM Fig. 4(a) w=61 1.18
ADM Fig. 4(c) w=31 2.30
FFTM Fig. 4(e) w=59 76.87
VIDM Fig. 4(g) λ=1000,μ=4,w_u=61,w_v=7 43.59

Table 2. Parameters and computation times of different methods for fringe density
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Table 2. Parameters and computation times of different methods for fringe density
Method Figure Parameter Time /s
GM Fig. 4(b) w=5 5.17
ADM Fig. 4(d) w=73 2.54
FFTM Fig. 4(f) w=43 70.93
VIDM Fig. 4(h) λ=1000,μ=4,w_u=85,w_v=65 42.46

Table 3. Parameters and computation times of four different methods for skeleton line extraction
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Table 3. Parameters and computation times of four different methods for skeleton line extraction
Method Parameter Time /s
CGVFs n=90 55.40
OCGVFs n=1500 970.70
ADGVFs n=1600 232.33
VIDGVFs λ=1000,μ=8,σ=3,N=5 2.66

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Tang Chen, Chen Mingming, Chen Xia, Li Biyuan, Lei Zhenkun. Information Extraction Methods Based on Variational Image Decomposition for Electronic Speckle Pattern Interferometry[J]. Acta Optica Sinica, 2018, 38(3): 328002

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Paper Information

Special Issue:

Received: Sep. 25, 2017

Accepted: --

Published Online: Mar. 20, 2018

The Author Email: Chen Tang (tangchen@tju.edu.cn)

DOI:10.3788/AOS201838.0328002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Parameters and computation times of different methods for fringe orientation

Table 1. Parameters and computation times of different methods for fringe orientation

Table 2. Parameters and computation times of different methods for fringe density

Table 2. Parameters and computation times of different methods for fringe density

Table 3. Parameters and computation times of four different methods for skeleton line extraction

Table 3. Parameters and computation times of four different methods for skeleton line extraction