Table 4. Quantitative results for the relevant metrics of the test dataset.

Methods	C1	C2	C3 (ours)
RMSE	9.11	9.09	9.02†
PSNR	33.08	33.12	33.17†
SSIM	0.918	0.921	0.925†

^†, the best results. RMSE, root-mean-square error; PSNR, peak signal-to-noise ratio; SSIM, structural similarity index.