Table 1.

Leaf vein experiment: comparison of PSNR and SSIM values.

	$2\times$		$4\times$
	PSNR (dB)	SSIM	PSNR (dB)	SSIM
Bicubic	23.4936 $\pm$ 1.8718	0.7721 $\pm$ 0.0457	19.9941 $\pm$ 1.9204	0.5773 $\pm$ 0.0683
EDSR	24.2356 $\pm$ 1.7999	0.5955 $\pm$ 0.0115	21.5557 $\pm$ 2.0176	0.6264 $\pm$ 0.0808
Residual U-Net	25.2166 $\pm$ 1.8106	0.7657 $\pm$ 0.0282	22.4960 $\pm$ 1.6238	0.6817 $\pm$ 0.0592
Ours	26.1431 $\pm$ 1.7022	0.8183 $\pm$ 0.0599	23.1760 $\pm$ 1.9290	0.7159 $\pm$ 0.0602