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Proceedings Paper

Evaluating contrast sensitivity
Author(s): Saori Kitaguchi; Lindsay MacDonald; Stephen Westland
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Paper Abstract

The problem for proper rendering of spatial frequencies in digital imaging applications is to establish the relative contrast sensitivity of observers at suprathreshold contrast levels in typical viewing environments. In an experimental study two methods of evaluating spatial contrast sensitivity were investigated, using targets of graded tonal modulation, at which observers were asked to point to the perceived threshold locations. The results produced by these two methods were rather different from those of the classical methods of vision science, showing a much lower sensitivity over a broader range of spatial frequencies. These may be regarded as complementary to CSF data derived from single- frequency Gabor stimuli and prove to be better suited to the needs of practical imaging applications.

Paper Details

Date Published: 3 February 2006
PDF: 10 pages
Proc. SPIE 6057, Human Vision and Electronic Imaging XI, 605704 (3 February 2006); doi: 10.1117/12.643188
Show Author Affiliations
Saori Kitaguchi, Univ. of Leeds (United Kingdom)
Lindsay MacDonald, London College of Communication (United Kingdom)
Stephen Westland, Univ. of Leeds (United Kingdom)

Published in SPIE Proceedings Vol. 6057:
Human Vision and Electronic Imaging XI
Bernice E. Rogowitz; Thrasyvoulos N. Pappas; Scott J. Daly, Editor(s)

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