Translation position determination in ptychographic coherent diffraction imaging.

@article{Zhang2013TranslationPD,
  title={Translation position determination in ptychographic coherent diffraction imaging.},
  author={Fucai Zhang and Isaac Peterson and Joan Vila-Comamala and Ana Diaz and Felisa Berenguer and Richard Bean and Bo Chen and Andreas Menzel and Ian Robinson and John Marius Rodenburg},
  journal={Optics express},
  year={2013},
  volume={21 11},
  pages={
          13592-606
        }
}
Accurate knowledge of translation positions is essential in ptychography to achieve a good image quality and the diffraction limited resolution. We propose a method to retrieve and correct position errors during the image reconstruction iterations. Sub-pixel position accuracy after refinement is shown to be achievable within several tens of iterations. Simulation and experimental results for both optical and X-ray wavelengths are given. The method improves both the quality of the retrieved… CONTINUE READING

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