Table 3 Performance comparison of output images between the two methods (the multi-sigma NeRF proposed in this paper and the original single-sigma NeRF) trained on datasets with different channel numbers.

From: Multi-channel volume density neural radiance field for hyperspectral imaging

Channel num

PSNR-single sigma

PSNR-multi sigma

Difference

3

31.83

31.64

-0.5%

4

33.02

33.32

+0.9%

8

32.64

33.57

+2.8%

14

31.83

33.49

+5.2%

17

29.00

32.15

+10.8%

20

28.95

31.41

+8.8%

29

29.22

31.81

+8.4%

34

29.37

30.56

+4.4%