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

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