Table 3.

Image reconstruction experiment (90 projections) illustrated in Fig. 4, RMSE and computation times

CGLS	RG-B9, 9, 9	RG-B43, 43, 9	ARG-Bo,9
RMSE	0.1071	0.0973	0.0979	0.0967
Time/sec per 1 iteration of (11)	-	23	551	58