Fig. 9.
Test suite 4 ā Topology of phantom. The phantom, shown in (b), is a 101Ć101 pixel image that is a āUā-shaped object with genus 0. The parallel beam data is shown in (a) and (c) and (d) show shape based reconstructions obtained using a template with genus 0 and 1, respectively. It is clear that the reconstruction inherits the topology of the template.