GPU-accelerated coupled ptychographic tomography


GPU-accelerated coupled ptychographic tomography

Achilles, S.; Ehrig, S.; Hoffmann, N.; Kahnt, M.; Becher, J.; Fam, Y.; Sheppard, T.; Brückner, D.; Schropp, A.; Schroer, C. G.

Scanning coherent X-ray microscopy (ptychography) has gained considerable interest during the last decade since the performance of this indirect imaging technique does not necessarily rely on the quality of the X-ray optics and, in principle, can achieve highest spatial resolution in X-ray imaging. The method can be easily extended to 3D by adding standard tomographic reconstruction schemes. However, the tomographic reconstruction is often applied in a subsequent step using a sequence of aligned ptychographic 2D projections. In this contribution, we outline current developments of a GPU-accelerated framework for direct 3D ptychography, coupling 2D ptychography and tomography. The program utilizes a custom GPU-accelerated framework for ptychography that offers three distinct ptychographic reconstruction algorithms. The tomographic reconstruction runs simultaneously and uses numerical routines of the ASTRA Toolbox. This parallel-computing approach results in a high performance increase considerably reducing the reconstruction time of 3D ptychographic datasets.

  • Contribution to proceedings
    SPIE Optical Engineering + Applications, 14.10.2022, San Diego, USA
    Proc. SPIE 12242, Developments in X-Ray Tomography XIV, 122420N
    DOI: 10.1117/12.2633102
    Cited 2 times in Scopus

Permalink: https://www.hzdr.de/publications/Publ-36632
Publ.-Id: 36632