BM3DSAPCA_couple.tif : PSNR = 30.82  FSIM = 0.9589  SSIM = 0.8453 

NCSR_couple.tif : PSNR = 30.56  FSIM = 0.9539  SSIM = 0.8363 

EPLL_couple.tif : PSNR = 30.47  FSIM = 0.9566  SSIM = 0.8364 

LSSC_couple.tif : PSNR = 30.70  FSIM = 0.9569  SSIM = 0.8434 

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

