BM3DSAPCA_couple.tif : PSNR = 37.57  FSIM = 0.9937  SSIM = 0.9520 

NCSR_couple.tif : PSNR = 37.44  FSIM = 0.9933  SSIM = 0.9498 

EPLL_couple.tif : PSNR = 37.32  FSIM = 0.9934  SSIM = 0.9511 

LSSC_couple.tif : PSNR = 37.41  FSIM = 0.9935  SSIM = 0.9501 

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

