Retinal Image Denoising via Bilateral Filter with a Spatial Kernel of Optimally Oriented Line Spread Function

Table 1

Quantitative results in preserving thin vessels.

Image in Figure 4	Se	Sp	Acc	AUC	DC
(b) Thin vessel image	1	1	1	1	1
(c) Result of BLF	0.973	0.998	0.992	0.986	0.910
(d) Result of our method	0.989	0.999	0.996	0.994	0.951
(j) Noisy vessel image	0.986	0.993	0.986	0.993	0.993
(k) Result of BLF	0.961	0.993	0.962	0.977	0.980
(l) Result of our method	0.976	0.993	0.995	0.985	0.990