Table 1 Neutron image quality evaluated by using PSNR, NMSE, SSIM as increasing measurement time or the number of counts.

From: Compact lightweight imager of both gamma rays and neutrons based on a pixelated stilbene scintillator coupled to a silicon photomultiplier array

Number of neutron events above 200 keVee

PSNR

NMSE

SSIM

330 (1 min)

22.90

4.7 × 10−3

0.81

1,000 (3 min)

23.74

3.3 × 10−3

0.85

2,000 (6 min)

39.29

1.1 × 10−4

0.99

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