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

Figure 7

Our approach performs much better than BLF in connecting vessels separated by noise and keeping thin vessels during the image denoising process.

(a) Binary mask of thin vessel

(b) Disconnected thin vessel

(c) Result of BLF

(d) Result of our method

(e) Binary mask of thick vessel

(f) Disconnected thick vessel

(g) Result of BLF

(h) Result of our method