Interpretation of star test pattern images.
作者信息
Burgess A E
出版信息
Med Phys. 1977 Jan-Feb;4(1):1-8. doi: 10.1118/1.594379.
DOI:10.1118/1.594379
PMID:840182
Abstract
The star test pattern image contains a large amount of information about the focus OTF which is not presently used. A mathematical analysis of these images for the special case of separable and symmetrical focal spots is presented. Circular blur loci are identified and their changes over the imaging field are described. Harmonic distortion and its application are described. Sources of measurement error are discussed.
摘要
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Interpretation of star test pattern images.
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