Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8898224 | Applied and Computational Harmonic Analysis | 2018 | 35 Pages |
Abstract
For both settings, the uniqueness of projected fixed point is proved and for setting 2) the local, geometric convergence is derived with a rate given by a spectral gap condition. Numerical experiments demonstrate global, power-law convergence of FDR from arbitrary initialization for both settings as well as for 3 or more coded diffraction patterns without oversampling. In practice, the geometric convergence can be recovered from the power-law regime by a simple projection trick, resulting in highly accurate reconstruction from generic initialization.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Pengwen Chen, Albert Fannjiang,