Normal Inverse Gaussian Model-Based Image Denoising in the NSCT Domain

Figure 3

Fragments of noisy (, PSNR = 20.18 dB) Barbara image and corresponding estimates with different methods.

(a) Noise-free image

(b) BivShrink

(c) BLS-GSM

(d) SA-DCT

(e) K-SVD

(f) Ram’s

(g) BM3D

(h) Proposed