. 2020 Feb 13;27(Pt 2):477–485. doi: 10.1107/S160057752000017X

Table 1. The average RMSE and SSIM values for each reconstruction method using a photon number of 10⁴ without or with PWLS.

Metric	f _FBP	f _FBP, PWLS	f _U-Net	f _{U-Net, PWLS}
RMSE (10⁻³ µm⁻¹)	2.55	2.44	1.21	1.16
SSIM	0.625	0.648	0.920	0.932

Table 1. The average RMSE and SSIM values for each reconstruction method using a photon number of 104 without or with PWLS.