Image Denoising via Nonlinear Hybrid Diffusion

Figure 10

Boat image (512×512). (a) Noisy image corrupted by Gaussian noise for 𝜎=35. (b) Original image. (c) Our algorithm by AOS, 𝑘=0.2, 𝜏=2 (9 steps). (d) Our algorithm by PMS, 𝜏=0.25 (110 steps). (e) PM algorithm, 𝐾=7, 𝜏=0.25 (90 steps). (f) TV algorithm, 𝜏=0.1 (450 steps).

(a) Noisy: 𝜎=35, PSNR =17.23

(b) Original

(c) AOS: PSNR = 27.59, MAE = 7.41

(d) PMS: PSNR = 27.38, MAE = 7.45

(e) PM: PSNR = 25.85, MAE = 8.22

(f) TV: PSNR = 26.50, MAE = 7.98