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Proceedings Paper

Spatial noise suppression for LCD displays: noise contrast
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Paper Abstract

LCD monitors used for radiologic diagnosis exhibit a random spatial gain-fluctuation pattern that can be characterized as multiplicative fixed-pattern noise. Our goal is to use a monitor-particular map of this noise to pre-process mammograms for display. This noise map is obtained by processing a captured image of the monitor screen. In previous work we have demonstrated a method that produces a measurable reduction in the noise level. In this paper we describe the results of our first observer studies and of computer analysis using visual a discrimination model. The result proved to be negative, i.e. the pre-processing provided an insufficient degree of improvement to be judged diagnostically effective. In light of these first results, we have been examining our assumptions and processing methods. We begin with a brief introduction then describe the construction of the noise map and its use in pre-processing. The two key advances follow: the observer-study and the computer-modeling results. Finally, we describe our efforts to understand the relation of our measurement, modeling, and observer results.

Paper Details

Date Published: 27 February 2010
PDF: 11 pages
Proc. SPIE 7627, Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment, 762706 (27 February 2010); doi: 10.1117/12.844615
Show Author Affiliations
William J. Dallas, The Univ. of Arizona (United States)
Hans Roehrig, The Univ. of Arizona (United States)
Jiahua Fan, GE Healthcare (United States)
Elizabeth A. Krupinski, The Univ. of Arizona (United States)
Jeffrey P. Johnson, Siemens Corporate Research (United States)

Published in SPIE Proceedings Vol. 7627:
Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment
David J. Manning; Craig K. Abbey, Editor(s)

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