Low-light image restoration using bright channel prior-based variational Retinex model

EURASIP Journal on Image and Video Processing

Table 1 Objective performance evaluation using PSNR and SSIM values with σ=5

	[2]		[3]		[8]		[23]		[14]		[16]		Proposed
	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM
Figure 4 a	15.57	0.646	17.50	0.683	19.06	0.783	21.35	0.933	16.86	0.710	22.58	0.894	26.77	0.964
Figure 4 b	16.57	0.662	18.92	0.676	18.36	0.722	20.25	0.889	17.10	0.645	21.21	0.819	23.24	0.936
Figure 4 c	16.68	0.636	21.50	0.711	18.66	0.697	20.18	0.780	18.23	0.620	21.35	0.774	23.31	0.861
Figure 4 d	16.87	0.720	18.69	0.735	19.40	0.821	20.49	0.876	16.68	0.706	22.44	0.896	25.28	0.950
Figure 4 e	17.40	0.645	21.40	0.721	16.98	0.701	18.40	0.718	16.40	0.550	21.27	0.769	24.02	0.902
Figure 4 f	16.48	0.590	21.69	0.715	19.09	0.671	21.18	0.806	17.50	0.566	21.26	0.741	24.56	0.893

The italicized number represents the highest value among the set of test methods