BM3DSAPCA_couple.tif : PSNR = 23.19  FSIM = 0.8134  SSIM = 0.5432 

NCSR_couple.tif : PSNR = 23.22  FSIM = 0.7816  SSIM = 0.5554 

EPLL_couple.tif : PSNR = 23.34  FSIM = 0.8043  SSIM = 0.5380 

LSSC_couple.tif : PSNR = 23.34  FSIM = 0.7887  SSIM = 0.5604 

couple.tif : PSNR = Inf  FSIM = 1.0000  SSIM = 1.0000 

