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SUMMARY:Ptycho! Image processing diffraction patterns - Chris Richardson (
 University of Cambridge)
DTSTART:20200122T130000Z
DTEND:20200122T140000Z
UID:TALK131434@talks.cam.ac.uk
CONTACT:Chris Richardson
DESCRIPTION:What is ptychography\, and why should we be interested?\n\nIma
 ging very small objects often involves using high energy or short waveleng
 th beams\, such as X-rays\, which are difficult to focus. As a result\, ra
 ther than images\, experimenters often collect diffraction patterns\, whic
 h record the intensity of the Fourier transform of the image.\n\nThe recon
 struction of the image from the diffraction pattern is non-unique\, becaus
 e the phase information has been lost. However by combining multiple overl
 apping images in real space\, it is possible to obtain a further constrain
 t\, which makes image reconstruction feasible.\n\nThis talk will introduce
  the topic\, and show an example of some of the challenges of converting a
 n existing Python script to C++ and running on a HPC.
LOCATION:JJ Thomson Seminar Room\, Maxwell Centre\, Cavendish Laboratory
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