Premium Precision of a rotating‐drum film scanner
Wlodawer A.
Publication year1974
Publication title
journal of applied crystallography
Resource typeJournals
Precession X‐ray films were scanned with a rotating‐drum microdensitometer. It is necessary to correct for non‐linearity between the scanner input and output. Reliability factors for estimating the precision of scanner measurements are compared. The values of the symmetry‐averaged reliability factor, R sym , vary between 3.9 and 12% and depend strongly on the quality of films, while the values of the scanning reproducibility factor, R rept (3.5–4%), and the film‐scaling reliability factor, R scale (4.5–5.5%), depend more on the quality of scanner software and electronics than on films.
Subject(s)cosmology , dark energy , drum , engineering , geometry , materials science , mathematics , mechanical engineering , metric expansion of space , microdensitometer , optics , physics , power (physics) , quantum mechanics , reliability (semiconductor) , reproducibility , scale factor (cosmology) , scaling , scanner , statistics
SCImago Journal Rank1.429

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