TY - JOUR
T1 - Fast digital lossy compression for X-ray ptychographic data
AU - Huang, Panpan
AU - Du, Ming
AU - Hammer, Mike
AU - Miceli, Antonino
AU - Jacobsen, Chris
N1 - Publisher Copyright:
open access.
Copyright:
This record is sourced from MEDLINE/PubMed, a database of the U.S. National Library of Medicine
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Increases in X-ray brightness from synchrotron light sources lead to a requirement for higher frame rates from hybrid pixel array detectors (HPADs), while also favoring charge integration over photon counting. However, transfer of the full uncompressed data will begin to constrain detector design, as well as limit the achievable continuous frame rate. Here a data compression scheme that is easy to implement in a HPAD's application-specific integrated circuit (ASIC) is described, and how different degrees of compression affect image quality in ptychography, a commonly employed coherent imaging method, is examined. Using adaptive encoding quantization, it is shown in simulations that one can digitize signals up to 16383 photons per pixel (corresponding to 14 bits of information) using only 8 or 9 bits for data transfer, with negligible effect on the reconstructed image.
AB - Increases in X-ray brightness from synchrotron light sources lead to a requirement for higher frame rates from hybrid pixel array detectors (HPADs), while also favoring charge integration over photon counting. However, transfer of the full uncompressed data will begin to constrain detector design, as well as limit the achievable continuous frame rate. Here a data compression scheme that is easy to implement in a HPAD's application-specific integrated circuit (ASIC) is described, and how different degrees of compression affect image quality in ptychography, a commonly employed coherent imaging method, is examined. Using adaptive encoding quantization, it is shown in simulations that one can digitize signals up to 16383 photons per pixel (corresponding to 14 bits of information) using only 8 or 9 bits for data transfer, with negligible effect on the reconstructed image.
KW - lossy compression
KW - pixel array detectors
KW - X-ray ptychography
UR - http://www.scopus.com/inward/record.url?scp=85099427869&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85099427869&partnerID=8YFLogxK
U2 - 10.1107/S1600577520013326
DO - 10.1107/S1600577520013326
M3 - Article
C2 - 33399580
AN - SCOPUS:85099427869
VL - 28
SP - 292
EP - 300
JO - Journal of Synchrotron Radiation
JF - Journal of Synchrotron Radiation
SN - 0909-0495
ER -