Mathematical Problems in Engineering / 2018 / Article / Fig 6

Research Article

Image Denoising Algorithm Combined with SGK Dictionary Learning and Principal Component Analysis Noise Estimation

Figure 6

Variation of denoising performance with noise standard deviation on five algorithms.
(a) Variation of noise estimation absolute
(b) Variation of noise estimation time
(c) Variation of PSNR
(d) Variation of MSE