Retinal Image Matching Using Hierarchical Vascular Features

Table 3

The distance matrix with vessel 1 for different rotating angles.

Rotation	Distance with vessel 1 in node number
	Vessel 1	Vessel 2	Vessel 3	Vessel 4	Vessel 5
0°	0	7	7	7	7
5°	0	7	7	7	7
10^∘	0	7	7	7	7
15^∘	2	7	7	7	7
20^∘	2	7	7	7	7
25^∘	4	7	7	7	7
30^∘	4	7	7	7	7