REVIEW: Retinal Vessel Image set for Estimation of Widths

Descriptive Statistics

The descriptive statistics of the manual segment width measurements for the image sets are summarized in Table I and the standard deviations of the width measurements are summarized in Table II.

TABLE I: Descriptive statistics of the profile diameters.

TABLE II: Standard Deviations of the measurement methods.

Dataset

Obs

Mean

Std Dev

Std E

5%

95%

Min

Max

HRIS

O

4.35

1.26

0.03

4.30

4.40

1.51

7.35

 

O1

4.12

1.25

0.03

4.07

4.17

1.39

7.14

 

O2

4.35

1.35

0.03

4.30

4.41

1.21

7.61

 

O3

4.58

1.26

0.03

4.53

4.63

1.88

7.44

VDIS

O

8.85

2.57

0.05

8.74

8.96

3.28

18.60

 

O1

8.50

2.54

0.05

8.39

8.60

2.48

18.33

 

O2

8.91

2.69

0.06

8.79

9.02

3.12

19.30

 

O3

9.15

2.67

0.06

9.04

9.26

3.68

18.47

CLRIS

O

13.80

4.12

0.24

13.32

14.28

6.85

21.73

 

O1

13.19

4.01

0.24

12.72

13.66

6.71

21.27

 

O2

13.69

4.22

0.25

13.19

14.18

6.50

22.10

 

O3

14.52

4.26

0.25

14.02

15.01

7.11

22.56

KPIS

O

7.40

0.36

0.03

7.34

7.45

6.41

8.38

 

O1

7.74

0.63

0.05

7.64

7.84

5.49

9.10

 

O2

7.29

0.49

0.04

7.21

7.36

6.07

7.94

 

O3

7.17

0.37

0.03

7.11

7.23

6.21

8.22

 

HRIS

 

VDIS

 

CLRIS

 

KPIS

 

 

Err SD

 

Err SD

 

Err SD

 

Err SD

 

 

σξ

ση

σξ

ση

σξ

ση

 

 

O1

0.288

0.303

0.543

0.560

0.567

0.573

0.417

0.394

O2

0.256

0.256

0.621

0.616

0.698

0.707

0.317

0.322

O3

0.285

0.284

0.669

0.649

0.566

0.540

0.326

0.332