Legibility of condensed perceptually-tuned grayscale fonts

  • R. A. Morris
  • R. D. Hersch
  • A. Coimbra
Part II: Common RIDT'98 and EP'98 Session Lgibility and Typpgraphy
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1375)


We analyze the quality of condensed text on LCD displays, generated with unhinted and hinted bilevel characters, with traditional anti-aliased and with perceptually-tuned grayscale characters. Hinted bi-level characters and perceptually-tuned grayscale characters improve the quality of displayed small size characters (8pt, 6pt) up to a line condensation factor of 80%. At higher condensation factors, the text becomes partly illegible. In such situations, traditional anti-aliased grayscale character seems to be the most robust variant. We explore the utility of perceptually-tuned grayscale fonts for improving the legibility of condensed text. A small advantage was found for text searching, compared to bilevel fonts. This advantage is consistent with human vision models applied to reading.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • R. A. Morris
    • 1
  • R. D. Hersch
    • 2
  • A. Coimbra
  1. 1.University of MassachusetsBostonUSA
  2. 2.Ecole Polytechnique FédéraleLausanneSwitzerland

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