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

EURASIP Journal on Image and Video Processing

Table 4 Objective performance evaluation using PSNR and SSIM values with σ=20

	[2]		[3]		[8]		[23]		[14]		[16]		Proposed
	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM
Figure 4 a	11.23	0.329	12.35	0.385	10.36	0.217	15.94	0.651	12.50	0.429	12.67	0.441	21.75	0.880
Figure 4 b	11.94	0.333	13.23	0.398	10.23	0.289	15.67	0.549	13.20	0.409	12.78	0.392	20.15	0.797
Figure 4 c	11.59	0.254	13.03	0.300	10.15	0.257	15.61	0.418	13.23	0.300	12.61	0.296	19.69	0.630
Figure 4 d	12.11	0.436	12.93	0.481	10.93	0.361	15.67	0.637	12.62	0.464	13.09	0.500	20.71	0.844
Figure 4 e	12.28	0.351	13.22	0.379	11.86	0.369	14.81	0.431	12.43	0.316	12.74	0.373	20.13	0.713
Figure 4 f	11.58	0.225	13.07	0.280	10.95	0.202	15.84	0.410	13.10	0.276	12.65	0.269	20.98	0.692

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