Retinal Image Segmentation from Stereo Fundus Images

Objects such as blood vessels, optic disk, and optic cup in retinal images are crucial in monitoring and detecting the progression of retinal diseases such as vascular diseases, glaucoma hypertension, and diabetic retinopathy.

(b) First pass segmentation: background

(a) Original image

(a) Original image

(b) First pass segmentation: background

(c) First pass segmentation: CSF and other (d) First pass segmentation: gray matter

(e) First pass segmentation: white matter (f) White matter mask

Figure 6.12: DA segmentation of MS lesions from Fig. 6.11(a).

(g) Input image for second pass clustering (h) MS lesion segmented from the second _ pass o

(i) Segmented lesion overlay on (a)

Table 6.1: Segmented lesion size in chronic MR images

MR image

L1

L2

L3

L4

L5

L6

(a)

4

4

28

2

70

36

(b)

2

15

29

1

401

32

(c)

10

31

63

313a

24

(d)

0

11

45

14

41

16

(a) Original image
(b) First pass segmentation: white matter
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