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

EURASIP Journal on Image and Video Processing

Table 3 Objective performance evaluation using PSNR and SSIM values with σ=15

	[2]		[3]		[8]		[23]		[14]		[16]		Proposed
	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM
Figure 4 a	12.21	0.390	13.66	0.457	11.01	0.314	17.94	0.766	13.50	0.496	14.61	0.554	23.25	0.912
Figure 4 b	12.94	0.391	14.73	0.471	13.25	0.418	17.28	0.651	14.22	0.468	14.52	0.484	21.23	0.849
Figure 4 c	12.77	0.327	14.78	0.387	12.62	0.322	17.32	0.530	14.48	0.372	14.46	0.389	20.73	0.694
Figure 4 d	13.26	0.504	14.31	0.549	14.53	0.595	17.33	0.729	13.56	0.521	14.90	0.597	22.05	0.881
Figure 4 e	13.69	0.429	15.05	0.463	13.31	0.439	16.22	0.513	13.56	0.381	14.61	0.462	21.41	0.785
Figure 4 f	12.62	0.284	14.78	0.360	13.94	0.354	17.69	0.522	14.19	0.335	14.47	0.355	22.25	0.762

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