BM3DSAPCA_couple.tif : PSNR = 34.11  FSIM = 0.9830  SSIM = 0.9101 

NCSR_couple.tif : PSNR = 33.94  FSIM = 0.9813  SSIM = 0.9064 

EPLL_couple.tif : PSNR = 33.78  FSIM = 0.9821  SSIM = 0.9067 

LSSC_couple.tif : PSNR = 33.96  FSIM = 0.9822  SSIM = 0.9077 

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

