BM3DSAPCA_couple.tif : PSNR = 26.48  FSIM = 0.8930  SSIM = 0.7042 

NCSR_couple.tif : PSNR = 26.21  FSIM = 0.8784  SSIM = 0.6925 

EPLL_couple.tif : PSNR = 26.22  FSIM = 0.8880  SSIM = 0.6883 

LSSC_couple.tif : PSNR = 26.31  FSIM = 0.8807  SSIM = 0.6979 

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

