A Smoothed -Norm and -Norm Regularization Algorithm for Computed Tomography

Table 1

Comparison of two algorithms after same number of iterations.

(a)

Shepp-Logan Phantom, after 70 iterations
	Time(s)	Error	RMSE	NRMSD	NMAD	SSIM
regularization	9.5	0.121	0.030	0.031	0.124	0.826
regularization	6.3	0.067	0.016	0.017	0.068	0.912

(b)

Cardiac Image, after 50 iterations
	Time(s)	Error	RMSE	NRMSD	NMAD	SSIM
regularization	5.1	0.131	0.047	0.033	0.152	0.696
regularization	4.9	0.116	0.042	0.029	0.131	0.735