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Table 2 Objective performance evaluation using PSNR and SSIM values with σ=10

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

  [2] [3] [8] [23] [14] [16] Proposed
  PSNR SSIM PSNR SSIM PSNR SSIM PSNR SSIM PSNR SSIM PSNR SSIM PSNR SSIM
Figure 4 a 13.67 0.489 15.30 0.548 14.45 0.554 20.03 0.871 14.85 0.585 17.59 0.711 21.44 0.935
Figure 4 b 14.52 0.486 16.59 0.557 15.72 0.567 19.04 0.775 15.52 0.546 17.12 0.623 22.02 0.880
Figure 4 c 14.50 0.448 17.47 0.523 16.12 0.500 19.06 0.664 16.10 0.479 17.21 0.539 21.65 0.758
Figure 4 d 14.83 0.596 16.17 0.629 15.76 0.650 19.12 0.818 14.83 0.599 17.72 0.733 23.33 0.911
Figure 4 e 15.49 0.523 17.60 0.571 14.97 0.538 17.58 0.609 14.88 0.456 17.26 0.585 22.38 0.829
Figure 4 f 14.31 0.396 17.48 0.496 15.27 0.423 19.73 0.667 15.65 0.426 17.26 0.500 23.05 0.806
  1. The italicized number represents the highest value among the set of test methods