Table 4.

Change rate of the image metrics of the images reconstructed from the interpolated projections.

Region	Full image			R1			R2
Change rate	SART	TV	TF-L0	SART	TV	TF-L0	SART	TV	TF-L0
RMSE	1.78%	2.01%	0.76%	7.51%	12.9%	3.60%	2.06%	1.58%	0.85%
PSNR	0.59%	0.58%	0.23%	3.38%	4.45%	1.34%	0.66%	0.50%	0.28%
UQI	0.06%	0.03%	0.01%	2.75%	1.28%	0.51%	0.42%	0.08%	0.05%