This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Fig.1
Current injection and voltage measurement in EIT for a closed domain (Ω) surrounded by surface electrodes at the domain boundary (∂Ω) (red and blue electrode represent the current and voltage electrodes respectively).
Fig.2
BMMR matrix formation: (a) A matrix formation by defining several block matrices in JTJ matrix, (b) Y matrix formation from A matrix, (c) BMMR matrix or Z matrix formation from Y matrix.
Fig.3
Projection errors (EV) calculated in the conductivity reconstruction at different iterations with different values of λ: (a) with STR, (b) with LMR, (c) with BMMR.
Fig.4
Error in different regularization methods for λ = 0.01: (a) normalized projection errors, (b) normalized solution error norm.
Fig.5
Conductivity reconstruction of the phantom with inhomogeneity (D = 30 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.01): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.6
Conductivity reconstruction of the phantom with inhomogeneity (D = 30 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.7
Conductivity reconstruction of the phantom with inhomogeneity (D = 30 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.00011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.8
Conductivity reconstruction of the phantom with inhomogeneity (D = 20 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.9
Conductivity reconstruction of the phantom with inhomogeneity (D = 30 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.10
Conductivity reconstruction of the phantom with inhomogeneity (D = 40 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.11
Conductivity reconstruction of the phantom with inhomogeneity (D = 35 mm, L = 22.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.12
Conductivity reconstruction of the phantom with inhomogeneity (D = 35 mm, L = 37.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.13
Conductivity reconstruction of the phantom with inhomogeneity (D = 35 mm, L = 52.5 mm) near electrode No.-3 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.14
Conductivity reconstruction of the phantom with double inhomogeneity (D = 40 mm, L = 37.5 mm) near electrode No.-3 and 15 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.15
Conductivity reconstruction of the phantom with double inhomogeneity (D = 40 mm, L = 52.5 mm) near electrode No.-3 and 15 (λ = 0.01): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.16
Conductivity reconstruction of the phantom with double inhomogeneity (D = 40 mm, L = 50.0 mm) near electrode No.-3 and 7 (λ = 0.0011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.17
Conductivity reconstruction of the phantom with double inhomogeneity (D = 40 mm, L = 37.5 mm) near electrode No.-3 and 7 (λ = 0.0011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.18
Conductivity reconstruction of the phantom with tripple inhomogeneity (D = 40 mm, L = 37.5 mm) near electrode No.-1, between electrode No.-6-7 and between electrode No.-11-12 (λ = 0.0001): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR
Fig.19
Conductivity reconstruction of the phantom with tripple inhomogeneity (D = 40 mm, L = 50.0 mm) near electrode No.-1, between electrode No.-6-7 and between electrode No.-11-12 (λ = 0.0011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR.
Fig.20
Conductivity reconstruction of the phantom with tripple inhomogeneity (D = 40 mm, L = 37.5 mm) near electrode No.-1, between electrode No.-6-7 and between electrode No.-11-12 (λ = 0.0011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR
Fig.21
Conductivity reconstruction of the phantom with tripple inhomogeneity (D = 40 mm, L = 37.5 mm) near electrode No.-1, between electrode No.-6-7 and between electrode No.-11-12 (λ = 0.00011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR
Fig.22
Conductivity reconstruction of the phantom with tripple inhomogeneity (D = 40 mm, L = 30.0 mm) near electrode No.-1, between electrode No.-6-7 and between electrode No.-11-12 (λ = 0.00011): (a) original object, (b) image with STR, (c) image with LMR, (d) image with BMMR
CNR, PCR and COC of the conductivity images of Fig.-9
30 mm Dia.
CNR
PCR
COC
ICMean
STR
1.94
45.94
2.04
0.25
LMR
1.30
38.46
1.81
0.27
BMMR
2.80
68.02
4.20
0.12
CNR, PCR and COC of the conductivity images of Fig.-6
λ = 0.0001
CNR
PCR
COC
ICMean
STR
1.98
46.30
2.05
0.25
LMR
1.12
28.25
1.46
0.34
BMMR
2.67
68.76
4.60
0.11
CNR, PCR and COC of the conductivity images of Fig.-5
λ = 0.01
CNR
PCR
COC
ICMean
STR
1.91
37.35
1.52
0.41
LMR
2.07
34.72
1.49
0.40
BMMR
2.67
49.06
2.14
0.24
CNR, PCR and COC of the conductivity images of Fig.-8
20 mm Dia.
CNR
PCR
COC
ICMean
STR
0.56
12.73
1.18
0.40
LMR
1.17
20.93
1.32
0.37
BMMR
2.51
50.53
2.46
0.19
CNR, PCR and COC of the conductivity images of Fig.-7
λ = 0.00011
CNR
PCR
COC
ICMean
STR
1.94
45.94
2.04
0.25
LMR
1.30
38.46
1.81
0.27
BMMR
2.80
68.02
4.20
0.12
CNR, PCR and COC of the conductivity images of Fig.-12
37.5 mm Dist.
CNR
PCR
COC
ICMean
STR
1.79
48.72
2.15
0.24
LMR
1.54
45.90
2.06
0.24
BMMR
2.75
75.33
6.01
0.08
CNR, PCR and COC of the conductivity images of Fig.-13
52.5 mm Dist.
CNR
PCR
COC
ICMean
STR
3.44
63.75
3.70
0.13
LMR
3.57
62.77
3.54
0.14
BMMR
3.59
63.77
3.50
0.14
CNR, PCR and COC of the conductivity images of Fig.-10
40 mm Dia.
CNR
PCR
COC
ICMean
STR
1.91
53.07
2.29
0.23
LMR
2.14
65.05
3.33
0.16
BMMR
2.98
74.58
5.06
0.10
CNR, PCR and COC of the conductivity images of Fig.-11