ECT Image Reconstruction Based on Fuzzy Mode Recognition and Sensitive Field Optimization

Guoxing Huang; Chao Li; Zhenhua Wu; Jingwen Wang; Taoya Yuan; Weidang Lu

doi:10.3788/AOS240452

Acta Optica Sinica, Volume. 44, Issue 9, 0911001(2024)

ECT Image Reconstruction Based on Fuzzy Mode Recognition and Sensitive Field Optimization

Guoxing Huang¹, Chao Li¹, Zhenhua Wu¹, Jingwen Wang^1、*, Taoya Yuan², and Weidang Lu¹

Author Affiliations

¹School of Information Engineering, Zhejiang University of Technology, Hangzhou 310023, Zhejiang, China

²School of Information Science and Engineering, Harbin Institute of Technology, Weihai 264209, Shandong, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(14)

Fig. 1. ECT system structure diagram

Download full size

Fig. 2. Distributions of sensitivity field under different flow patterns. (a) Full pipe; (b) empty pipe; (c) annular; (d) core

Download full size

Fig. 3. Schematic diagram of pixel division of imaging area

Download full size

Fig. 4. Flow chart for flow pattern identification

Download full size

Fig. 5. Schematic diagram of the extension method for sensitive domains under feature extraction

Download full size

Fig. 6. COMSOL simulation model of ECT system

Download full size

Fig. 7. Initial reconstructed images and original flow patterns of empty and full tubes (corresponding to the flow pattern identification results in Table 2)

Download full size

Fig. 8. Reconstructed images of different algorithms in simulation

Download full size

Fig. 9. Image relative error histogram of different algorithms

Download full size

Fig. 10. Histogram of image correlation coefficients for different algorithms

Download full size

Table 1. Statistical results of ECT flow pattern identification based on fuzzy mode

View table

Table 1. Statistical results of ECT flow pattern identification based on fuzzy mode

Flow pattern	Identification accuracy /%
Flow pattern	Noise free experiment	Noise is 60 dB	Noise is 40 dB
1/3 laminar	100	100	100
1/2 laminar	100	100	100
2/3 laminar	100	100	98
Annular	100	100	100
Core	100	100	100
Bubble	100	98	92
Empty pipe	100	100	100
Full pipe	100	100	100

Table 2. Fuzzy characteristic parameters of ECT flow pattern identification based on fuzzy mode

View table

Table 2. Fuzzy characteristic parameters of ECT flow pattern identification based on fuzzy mode

Experimental flow pattern	Fuzzy feature parameter value			Value of affiliation			Flow pattern identification result
Experimental flow pattern	$x_{1}$	$x_{2}$	$x_{3}$	$ϖ_{Y_{1}}$	$ϖ_{Y_{2}}$	$ϖ_{Y_{3}}$	Flow pattern identification result
1/3 laminar	0.173	0.343	0.057	0.451	0.567	0.406	1/3 laminar［Fig. 7（a）］
1/2 laminar	0.335	0.584	0.114	0.350	0.447	0.273	1/2 laminar［Fig. 7（b）］
Annular	0.304	0.086	0.234	0.471	0.194	0.527	Annular［Fig. 7（c）］
Core	0.267	0.001	0.455	0.532	0.165	0.753	Core［Fig. 7（d）］
2/3 laminar	0.631	0.356	0.365	0.280	0.261	0.266	2/3 laminar［Fig. 7（e）］
Bubble	0.501	0.094	0.530	0.496	0.188	0.494	Bubble［Fig. 7（f）］
Full pipe	0.788	0.002	—	—	—	—	Full pipe［Fig. 7（g）］
Empty pipe	0.003	0.005	0.004	—	—	—	Empty pipe［Fig. 7（h）］

Table 3. Relative error of image reconstruction by five algorithms

View table

Table 3. Relative error of image reconstruction by five algorithms

Algorithm	Relative error
Algorithm	1/3 laminar	1/2 laminar	2/3 laminar	Annular	Core	Bubble
Landweber	0.246	0.260	0.192	0.282	0.450	0.443
Tikhonov	0.519	0.549	0.372	0.393	0.405	0.438
Kalman	0.358	0.399	0.273	0.256	0.759	0.757
CGLS	0.389	0.400	0.286	0.366	0.681	0.925
Proposed method	0.178	0.115	0.084	0.183	0.300	0.406

Table 4. Correlation coefficients of reconstructed images by five algorithms

View table

Table 4. Correlation coefficients of reconstructed images by five algorithms

Algorithm	Correlation coefficient
Algorithm	1/3 laminar	1/2 laminar	2/3 laminar	Annular	Core	Bubble
Landweber	0.915	0.886	0.833	0.790	0.799	0.679
Tikhonov	0.695	0.434	0.307	0.650	0.832	0.680
Kalman	0.835	0.782	0.740	0.841	0.666	0.190
CGLS	0.840	0.824	0.749	0.713	0.761	0.189
Proposed method	0.941	0.949	0.928	0.902	0.895	0.699

Tools

Get Citation

Copy Citation Text

Guoxing Huang, Chao Li, Zhenhua Wu, Jingwen Wang, Taoya Yuan, Weidang Lu. ECT Image Reconstruction Based on Fuzzy Mode Recognition and Sensitive Field Optimization[J]. Acta Optica Sinica, 2024, 44(9): 0911001

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Imaging Systems

Received: Jan. 8, 2024

Accepted: Feb. 19, 2024

Published Online: May. 15, 2024

The Author Email: Wang Jingwen (wangjingwenhappy@126.com)

DOI:10.3788/AOS240452

CSTR:32393.14.AOS240452

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology