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Proceedings Paper

Characterization of vibration-induced image defects in input scanners
Author(s): Robert P. Loce; George Wolberg
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Paper Abstract

Typical office scanners employ a moving linear-sensor array or moving optics. The velocity of the components is generally not constant in time. It may be modulated directly (at one or more frequencies) by dynamic errors of gears, timing belts, and motors, and indirectly by structural vibrations induced by gears, fans, etc. Nonuniform velocity is known to cause undesirable brightness fluctuation and warping in the sampled image. The present paper characterizes the image defects induced by nonuniform velocity. A companion paper utilizes the degradation information to develop an algorithm to restore the degraded image.

Paper Details

Date Published: 30 March 1995
PDF: 8 pages
Proc. SPIE 2422, Document Recognition II, (30 March 1995); doi: 10.1117/12.205836
Show Author Affiliations
Robert P. Loce, Xerox Webster Research Ctr. (United States)
George Wolberg, CUNY/City College (United States)

Published in SPIE Proceedings Vol. 2422:
Document Recognition II
Luc M. Vincent; Henry S. Baird, Editor(s)

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