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Aliasing effects in digital images of line‐pair phantoms
Author(s) -
Albert Michael,
Beideck Daniel J.,
Bakic Predrag R.,
Maidment Andrew D. A.
Publication year - 2002
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 - 10.1118/1.1493212
Subject(s) - aliasing , medical imaging , line (geometry) , anti aliasing , computer science , image resolution , resolution (logic) , optics , line width , computer vision , medical physics , computer graphics (images) , physics , artificial intelligence , mathematics , telecommunications , geometry , audio signal processing , speech coding , undersampling , audio signal
Line‐pair phantoms are commonly used for evaluating screen‐film systems. When imaged digitally, aliasing effects give rise to additional periodic patterns. This paper examines one such effect that medical physicists are likely to encounter, and which can be used as an indicator of super‐resolution.