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
- Acta Optica Sinica
- Vol. 38, Issue 3, 328002 (2018)
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
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
Fig. 3. ESPI fringe image obtained by experiment
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
Fig. 5. ESPI fringe image obtained by experiment
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 2. Parameters and computation times of different methods for fringe density
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Table 3. Parameters and computation times of four different methods for skeleton line extraction
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