An iterative virtual projection method to improve the reconstruction performance for ill-posed emission tomographic problems
Liu Hua-Wei, Zheng Shu, Zhou Huai-Chun†
An iterative virtual projection method to improve the reconstruction performance for ill-posed emission tomographic problems |
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Liu Hua-Wei, Zheng Shu, Zhou Huai-Chun†
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| Illustration of random interpolation mesh for the virtual projection. (a) A measured projection along an integral line passing through 8 upwards and downwards meshes. (b) The meshes forming a virtual projection from the measured projection in panel (a) after a random replacement process: the top first and seventh meshes are replaced by the corresponding left meshes; the second, the third, the fifth, and the eighth meshes are unchanged; the fourth mesh is replaced by the right mesh; and the sixth mesh is replaced by the upper mesh. (c) Three possible adjacent meshes for every upwards and downwards meshes in panels (a) and (b) |
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