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. Author manuscript; available in PMC: 2015 Oct 16.
Published in final edited form as: IEEE Trans Comput Imaging. 2015 Jun 5;1(1):44–55. doi: 10.1109/TCI.2015.2442511

Table IV.

OS-SIRT Step Size α̃* as Function of M.

DS1 (MN) DS2 (FD)
M S̃M α̃* S̃M α̃*
1 1.0000 1.9977 1.0000 1.9977
2 1.0094 1.9792 1.0094 1.9792
4 1.0263 1.9466 1.0262 1.9467
8 1.0525 1.8982 1.0524 1.8983
16 1.1240 1.7776 1.1239 1.7777
32 1.3654 1.4636 1.3653 1.4636