Table 2.

Mean values of SSIM and PSNR obtained by the considered methods when they are applied to reconstruct dense Z-spectra from experimentally acquired images at 11 frequency offsets.

	Lorentzian	RNN	LSTM	GRU	TCN	TCN-LSTM
SSIM	0.9875	0.9967	0.9971	0.9973	0.9984	0.9989
PSNR	47.7917	42.5169	42.6597	43.0040	45.8753	50.3227