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Accurate characterization of image intensifier distortion
Author(s) -
Rudin Stephen,
Bednarek Daniel R.,
Wong Roland
Publication year - 1991
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596623
Subject(s) - image intensifier , distortion (music) , optics , photocathode , curvature , polynomial , characterization (materials science) , image (mathematics) , physics , computer science , algorithm , mathematics , artificial intelligence , mathematical analysis , electron , geometry , telecommunications , amplifier , quantum mechanics , bandwidth (computing)
Image intensifier distortion due to photocathode curvature and electron optics is shown to be approximated by a simple two parameter odd‐power polynomial. The accuracy of this fit was found to be far better than that of two other one parameter characterizations of distortion when applied to experimental data from four different model image intensifiers ranging in diameter from 9 to 14 in. The standard errors of the two parameter fits were less than 0.1 mm or 0.03% of the field of the IIs and were within the estimated measurement error.