Table 1 Gaussian de-noise.

Method	σ = 10		σ = 20		σ = 30		σ = 40		σ = 50		σ = 60
Method	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR
GAS³⁵	0.936	31.16	0.84	30.26	0.726	29.04	0.626	27.7	0.536	26.36	0.465	25.09
NLM³⁶	0.942	38.7	0.91	35.7	0.771	29.80	0.512	24.03	0.310	20.13	0.19	17.0
BILT³⁷	0.960	41.36	0.89	37.12	0.670	31.48	0.410	26.7	0.245	23.19	0.157	20.6
BM3D³⁹	0.936	30.8	0.932	30.61	*0.925*	30.13	*0.914*	29.3	0.899	28.29	0.899	29.5
BM3D DEBLUR³⁹	0.898	22.59	0.896	22.93	0.893	31.41	0.885	23.5	0.870	23.8	0.844	24.03
IRCN⁴²	*0.956*	40.0	0.956	39.0	0.819	33.29	0.428	25.92	0.231	22.14	0.141	19.6
OUR	0.93	34.1	*0.94*	35.0	0.93	33.9	0.92	31.9	*0.82*	29.2	*0.61*	25.82

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