## 4 Experiments
### Color Image Denoising
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline \(\sigma\) & **Image** & **BM3D** & **WNNM** & **DnCNN** & **FFDNet** & **DAGL** & **DeamNet** & **DRUNet** & **IRCNN** & **SwinIR** & **DIP** & **N2V** & **Ours** \\ \hline \multirow{5}{*}{25} & Boat & 32.09 & 32.29 & 32.36 & 32.35 & 32.64 & 32.62 & 32.71 & 32.36 & **32.81** & 31.05 & 31.34 & **33.09** \\  & Man & 31.90 & 32.14 & 32.37 & 32.40 & 32.52 & 32.52 & 32.61 & 32.36 & **32.67** & 30.76 & 31.01 & **33.02** \\  & Couple & 32.04 & 32.19 & 32.38 & 32.45 & 32.67 & 32.68 & 32.78 & 32.37 & **32.83** & 30.75 & 30.58 & **33.10** \\ \cline{2-13}  & C\_man & 29.38 & 29.66 & 30.03 & 30.06 & 30.32 & 30.38 & **30.61** & 30.12 & **30.69** & 28.46 & 28.04 & 30.25 \\  & House & 32.86 & 33.20 & 33.04 & 33.27 & 33.80 & 33.73 & **33.93** & 33.02 & 33.91 & 31.98 & 32.43 & **34.00** \\  & Peppers & 30.20 & 30.42 & 30.73 & 30.79 & 31.04 & 31.09 & 31.22 & 30.81 & **31.28** & 29.22 & 29.19 & **31.57** \\  & Starfish & 28.52 & 29.04 & 29.24 & 29.33 & **30.09** & 29.89 & 29.88 & 29.21 & 29.96 & 28.41 & 29.19 & **30.52** \\  & Monarch & 29.30 & 29.85 & 30.37 & 30.14 & 30.72 & 30.72 & 30.89 & 30.20 & **30.95** & 28.82 & 29.03 & **31.04** \\  & Airplane & 28.42 & 28.71 & 29.06 & 29.05 & 29.41 & 29.30 & 29.35 & 29.05 & **29.44** & 27.71 & 27.03 & **29.98** \\  & Parrot & 28.94 & 29.16 & 29.35 & 29.43 & 29.54 & 29.60 & 29.72 & 29.47 & **29.75** & 28.33 & 27.78 & **29.81** \\  & Lena & 32.07 & 32.24 & 32.40 & 32.59 & 32.84 & 32.85 & 32.97 & 32.40 & **32.98** & 31.34 & 31.80 & **33.29** \\  & [PERSON] & 30.66 & 31.24 & 29.67 & 29.98 & **31.49** & 30.74 & 31.23 & 29.93 & **31.69** & 26.63 & 29.03 & 29.36 \\  & Boat & 29.87 & 30.04 & 30.19 & 30.23 & 30.49 & 30.48 & 30.58 & 30.17 & **30.64** & 28.91 & 29.49 & **30.97** \\  & Man & 29.59 & 29.79 & 30.06 & 30.10 & 30.20 & 30.17 & 30.30 & 30.02 & **30.32** & 28.71 & 29.49 & **30.65** \\  & Couple & 29.70 & 29.83 & 30.05 & 30.18 & 30.38 & 30.44 & 30.56 & 30.05 & **30.57** & 28.48 & 29.28 & **30.78** \\ \hline \multirow{5}{*}{50} & C\_man & 26.19 & 26.24 & 27.26 & 27.03 & 27.29 & 27.42 & **27.80** & 27.16 & **27.79** & 24.67 & 24.66 & 27.06 \\  & House & 29.57 & 30.16 & 29.91 & 30.43 & 31.04 & 31.16 & **31.26** & 29.91 & **31.11** & 28.20 & 29.00 & 30.78 \\  & Peppers & 26.72 & 26.79 & 27.35 & 27.43 & 27.60 & 27.76 & 27.87 & 27.33 & **27.91** & 25.85 & 28.52 & **27.93** \\  & Starfish & 24.90 & 25.29 & 25.60 & 25.77 & 26.46 & 26.47 & 26.49 & 25.48 & **26.55** & 24.61 & 25.23 & **26.77** \\  & Monarch & 25.71 & 26.05 & 26.84 & 26.88 & 27.30 & 27.18 & **27.31** & 26.66 & **27.31** & 25.61 & 25.81 & **27.65** \\  & Airplane & 25.17 & 25.26 & 25.82 & 25.90 & **26.21** & 26.07 & 26.08 & 25.78 & 26.14 & 24.65 & 24.78 & **26.57** \\  & Parrot & 25.87 & 25.98 & 26.48 & 26.58 & 26.66 & 26.71 & 26.92 & 26.48 & **26.91** & 24.74 & 22.69 & **26.85** \\  & Lena & 29.02 & 29.16 & 29.34 & 29.68 & 29.92 & 29.93 & **30.15** & 29.36 & 30.11 & 28.11 & 28.39 & **30.27** \\  & Barbara & 27.21 & 27.46 & 26.32 & 26.48 & **28.26** & 27.60 & 28.16 & 26.17 & **28.41** & 23.41 & 23.97 & 25.45 \\  & Boat & 26.73 & 26.85 & 27.18 & 27.32 & 27.56 & 27.59 & 27.66 & 27.17 & **27.70** & 25.65 & 26.57 & **27.86** \\  & Man & 26.79 & 26.83 & 27.17 & 27.30 & 27.39 & 27.36 & **27.46** & 27.14 & 27.45 & 26.10 & 26.79 & **27.75** \\  & Couple & 26.47 & 26.53 & 26.87 & 27.07 & 27.33 & 27.43 & **27.59** & 26.86 & **27.53** & 25.22 & 26.21 & 27.51 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: _Cont._  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Method**} & \multicolumn{4}{c}{**PSNR**} \\ \cline{2-5}  & **15** & **25** & **50** & **Avg. ** \\ \hline DnCNN & 34.29 & 32.12 & 29.25 & 31.89 \\ FFDNet & 34.31 & 32.12 & **29.27** & 31.90 \\ CBM3D & 34.03 & 31.62 & 28.66 & 31.44 \\ VDNet & 29.94 & 29.03 & 27.74 & 28.90 \\ DRUNet & **34.89** & **32.71** & **29.84** & **32.48** \\ SwinIR & **35.06** & **32.81** & **29.89** & **32.59** \\ DIP & 32.84