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

Figure 4

Our approach can suppress image noise while keeping vessels, as shown by a comparison of the denoising results on an artificial vessel image with BLF.

(a) Binary mask of vessel

(b) Original vessel image

(c) Result of BLF

(d) Result of our method

(e) Binary mask of vessel

(f) Vessel image with noise

(g) Result of BLF

(h) Result of our method