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Applied Optics

Applied Optics


  • Vol. 25, Iss. 21 — Nov. 1, 1986
  • pp: 3880–3884

Periodic image artifacts from continuous-tone laser scanners

Paul C. Schubert  »View Author Affiliations

Applied Optics, Vol. 25, Issue 21, pp. 3880-3884 (1986)

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Continuous-tone images produced by mechanically scanned analog modulated laser beams are susceptible to image artifacts in the form of spatially periodic density variations due to machine errors in film transport velocity, raster scan-line placement, and scan-line intensity. The human eye is particularly sensitive to periodic patterns and, in ideal conditions, can detect peak-to-peak density variations as small as ~0.005 for spatial frequencies around 2–5 cycles/deg. The stringent requirements that this implies for the scanner hardware are derived. Particular attention is paid to the rotating polygon-type scanner, since this device currently provides the best combination of speed, image quality, and cost.

© 1986 Optical Society of America

Original Manuscript: February 12, 1986
Published: November 1, 1986

Paul C. Schubert, "Periodic image artifacts from continuous-tone laser scanners," Appl. Opt. 25, 3880-3884 (1986)

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  1. F. Bestenreiner, U. Greis, J. Helmberger, K. Stadler, “Visibility and Correction of Periodic Interference Structures in Line-by-Line Recorded Images,” J. Appl. Photogr. Eng. 2, No. 2, 86 (1976).
  2. D. H. Kelly, “Visual Contrast Sensitivity,” Opt. Acta 24, No. 2, 107 (1977). [CrossRef]
  3. F. W. Campbell, D. G. Green, “Optical and Retinal Factors Affecting Visual Resolution,” J. Physiol. 181, 576 (1965). [PubMed]

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