Browsing by Subject "ptychography"

Now showing items 1-3 of 3

    • Ptychographic X-ray speckle tracking 

      Morgan, Andrew J.; Quiney, Harry M.; Bajt, Saša; Chapman, Henry N. (Journal of Applied Crystallography, 2020)
      A method is presented for the measurement of the phase gradient of a wavefront by tracking the relative motion of speckles in projection holograms as a sample is scanned across the wavefront. By removing the need to obtain ...

    • speckle-tracking: a software suite for ptychographic X-ray speckle tracking 

      Morgan, Andrew J.; Murray, Kevin T.; Quiney, Harry M.; Bajt, Saša; Chapman, Henry N. (Journal of Applied Crystallography, 2020)
      In recent years, X-ray speckle-tracking techniques have emerged as viable tools for wavefront metrology and sample imaging applications. These methods are based on the measurement of near-field images. Thanks to their ...

    • Tomographic reconstruction with a generative adversarial network 

      Yang, Xiaogang; Kahnt, Maik; Brückner, Dennis; Schropp, Andreas; Fam, Yakub; Becher, Johannes; Grunwaldt, Jan-Dierk; Sheppard, Thomas L.; Schroer, Christian G. (Journal of Synchrotron Radiation, 2020)
      This paper presents a deep learning algorithm for tomographic reconstruction (GANrec). The algorithm uses a generative adversarial network (GAN) to solve the inverse of the Radon transform directly. It works for independent ...