Title
Fully automated measurement of the modulation transfer function of charge-coupled devices above the Nyquist frequency Fully automated measurement of the modulation transfer function of charge-coupled devices above the Nyquist frequency
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Cambridge, Mass. ,
Subject
Physics
Chemistry
Source (journal)
Microscopy and microanalysis. - Cambridge, Mass.
Volume/pages
18(2012) :2 , p. 336-342
ISSN
1431-9276
ISI
000302084700011
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The charge-coupled devices used in electron microscopy are coated with a scintillating crystal that gives rise to a severe modulation transfer function (MTF). Exact knowledge of the MTF is imperative for a good correspondence between image simulation and experiment. We present a practical method to measure the MTF above the Nyquist frequency from the beam blocker's shadow image. The image processing has been fully automated and the program is made public. The method is successfully tested on three cameras with various beam blocker shapes.
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