We present a nonparametric algorithm for finding localized energy solutions from limited data. The problem we address is underdetermined, and no prior knowledge of the shape of the region on which the solution is nonzero is assumed. Termed the FOcal Underdetermined System Solver (FOCUSS), the algorithm has two integral parts: a low-resolution initialâ€¦Â (More)

Fast algorithms for biomedical tomography problems

I. F. Gorodnitsky, D. Beransky

Proc. 30th Asilomar Conf. Signals, Syst. Computâ€¦

1996

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A novel class of recursively constrained algorithms for localized energy solutions: Theory and application to magnetoencephalography and signal processing

I. F. Gorodnitsky

Ph.D. dissertation, Univ. California, San Diegoâ€¦

@article{Gorodnitsky1997SparseSR,
title={Sparse signal reconstruction from limited data using FOCUSS: a re-weighted minimum norm algorithm},
author={Irina F. Gorodnitsky and Bhaskar D. Rao},
journal={IEEE Trans. Signal Processing},
year={1997},
volume={45},
pages={600-616}
}