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Proceedings Paper

Radiological Laser Film Scanner Sampling Artifact
Author(s): Yoshiyuki Ishimitsu; Kazuyuki Arai; Ricky K. Taira; H. K. Huang
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Paper Abstract

Artifacts seen on laser digitized radiographs are analyzed and mathematically explained based on the concept of image contrast. Our investigation considered the following determinants: 1)laser spot size, 2)signal processing components, 3)image characteristics, and 4)observer performance. A functional relationship between the sampling interval, laser spot size, and the contrast of the artifact seen on the digitized image is derived. This relationship is verified experimentally using a variable spot size laser source and sampling at interval of 175.0 microns. The problem of digitizing artifact seen on film images obtained with anti-scatter grids is discussed.

Paper Details

Date Published: 27 June 1988
PDF: 11 pages
Proc. SPIE 0914, Medical Imaging II, (27 June 1988); doi: 10.1117/12.968773
Show Author Affiliations
Yoshiyuki Ishimitsu, Konica Corporation (Japan)
Kazuyuki Arai, Konica Corporation (Japan)
Ricky K. Taira, University of California (United States)
H. K. Huang, University of California (United States)

Published in SPIE Proceedings Vol. 0914:
Medical Imaging II
Samuel J. Dwyer; Roger H. Schneider; Roger H. Schneider; Samuel J. Dwyer; Samuel J. Dwyer; Roger H. Schneider, Editor(s)

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