Smart Switching Bilateral Filter with Estimated Noise Characterization for Mixed Noise Removal

Figure 27

Compare PSNR of NCSR, BM3D, TF, SBF, OSBF, and SSBF for Lena image. (a) Group A: noisy image by Gaussian noise (SNR = 25 dB) mixed with salt-and-pepper noise (ρ = 20%), (b) Group B: noisy image by Gaussian noise (SNR = 25 dB) mixed with uniform impulse noise (ρ = 20%), (c) Group C: noisy image by speckle noise ( = 20%) mixed with salt-and-pepper noise (ρ = 20%), and (d) Group D: noisy image by speckle noise (ρ = 20%) mixed with uniform impulse noise (ρ = 20%).