Projection-domain iteration to estimate unreliable measurements

Visual Computing for Industry, Biomedicine, and Art

Table 1 Artifact severity comparison in an ROI

Bag	Conventional FBP method	Image-domain update TV method	Projection-domain update TV method (proposed)
1	0.2491	0.2625	0.2848
2	−0.2616	− 0.2491	0.0983
3	−0.3233	−0.314	0.0971
4	−0.1485	−0.1104	0.148
5	−0.0125	0.0076	0.0466

A smaller value indicates a more severe artifact. A larger number indicates better performance. Do not compare between bags, because they contain different objects