A unified evaluation of iterative projection algorithms for phase retrieval

Abstract

Iterative projection algorithms are successfully being used as a substitute of lenses to recombine, numerically rather than optically, light scattered by illuminated objects. Images obtained computationally allow aberration-free diffraction-limited imaging and the possibility of using radiation for which no lenses exist. The challenge of this imaging technique is transfered from the lenses to the algorithms. We evaluate these new computational ``instruments'' developed for the phase retrieval problem, and discuss acceleration strategies.

12 pages, 9 figures, revtex

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• Femtosecond Diffractive Imaging with a Soft-X-ray Free-Electron Laser
• X-ray image reconstruction from a diffraction pattern alone
• SPEDEN: Reconstructing single particles from their diffraction patterns

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