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Holographically stored x‐ray images: Gray‐tone reproduction
Author(s) -
Clausen C.,
Killat U.
Publication year - 1978
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 - 10.1118/1.594425
Subject(s) - speckle pattern , holography , optics , scattering , physics , gray (unit) , tone (literature) , dynamic range , nuclear medicine , medicine , art , literature
Storage of radiographs by holographic means is analyzed with emphasis on its gray‐tone reproduction characteristics. The density range and number of gray‐tone levels is found to be limited by random scattering in the holographic medium. The behavior is described quantitatively and is in satisfactory agreement with experimental data. Gray‐tone resolution is shown to be reduced by speckle noise. It is shown that there exists a trade‐off between speckle reduction and reproduced density range.