Table 1. Structural similarity index of the 3D profile map and the optical properties map for all the validation dataset.

		Structural similarity index (SSIM)
Full image	Spatial frequency	SSOP Filtering	SSOP DL Conv 7 × 1	SSOP DL Conv 7 × 7
3D Profile	0.1 mm-1	0.44 ± 0.16	0.49 ± 0.17	0.50 ± 0.16
	0.2 mm-1	0.47 ± 0.15	0.50 ± 0.16	0.51 ± 0.16
	0.3 mm-1	0.47 ± 0.15	0.51 ± 0.15	0.52 ± 0.15
	0.4 mm-1	0.48 ± 0.15	0.51 ± 0.15	0.52 ± 0.15
Absorption	0.1 mm-1	0.96 ± 0.02	0.98 ± 0.03	0.98 ± 0.01
	0.2 mm-1	0.98 ± 0.01	0.98 ± 0.03	0.98 ± 0.01
	0.3 mm-1	0.97 ± 0.02	0.97 ± 0.03	0.98 ± 0.02
	0.4 mm-1	0.96 ± 0.02	0.96 ± 0.03	0.97 ± 0.02
Reduced scattering	0.1 mm-1	0.75 ± 0.08	0.84 ± 0.07	0.86 ± 0.06
	0.2 mm-1	0.75 ± 0.07	0.81 ± 0.08	0.83 ± 0.06
	0.3 mm-1	0.71 ± 0.08	0.76 ± 0.09	0.78 ± 0.07
	0.4 mm-1	0.67 ± 0.10	0.71 ± 0.10	0.74 ± 0.09