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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 6, Iss. 4 — Feb. 14, 2000
  • pp: 81–91

Discriminability measures for predicting readability of text on textured backgrounds

Lauren F. V. Scharff, Alyson L. Hill, and Albert J. Ahumada, Jr.  »View Author Affiliations

Optics Express, Vol. 6, Issue 4, pp. 81-91 (2000)

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Several discriminability measures were examined for their ability to predict reading search times for three levels of text contrast and a range of backgrounds (plain, a periodic texture, and four spatial-frequency-filtered textures created from the periodic texture). Search times indicate that these background variations only affect readability when the text contrast is low, and that spatial frequency content of the background affects readability. These results were not well predicted by the single variables of text contrast (Spearman rank correlation=-0.64) and background RMS contrast (0.08), but a global masking index and a spatial-frequency-selective masking index led to better predictions (-0.84 and -0.81, respectively).

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OCIS Codes
(100.5010) Image processing : Pattern recognition
(110.2960) Imaging systems : Image analysis
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5000) Vision, color, and visual optics : Vision - patterns and recognition
(330.5510) Vision, color, and visual optics : Psychophysics

ToC Category:
Research Papers

Original Manuscript: December 22, 1999
Published: February 14, 2000

Lauren Scharff, Alyson Hill, and Albert Ahumada, "Discriminability measures for predicting readability of text on textured backgrounds," Opt. Express 6, 81-91 (2000)

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