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Proceedings Paper

Influence of high ambient illuminance and display luminance on readability and subjective preference
Author(s): Katrien De Moor; Börje Andrén; Yi Guo; Kjell Brunnström; Kun Wang; Anton Drott; David S. Hermann
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Paper Abstract

Many devices, such as tablets, smartphones, notebooks, fixed and portable navigation systems are used on a (nearly) daily basis, both in in- and outdoor environments. It is often argued that contextual factors, such as the ambient illuminance in relation to characteristics of the display (e.g., surface treatment, screen reflectance, display luminance …) may have a strong influence on the use of such devices and corresponding user experiences. However, the current understanding of these influence factors is still rather limited. In this work, we therefore focus in particular on the impact of lighting and display luminance on readability, visual performance, subjective experience and preference. A controlled lab study (N=18) with a within-subjects design was performed to evaluate two car displays (one glossy and one matte display) in conditions that simulate bright outdoor lighting conditions. Four ambient luminance levels and three display luminance settings were combined into 7 experimental conditions. More concretely, we investigated for each display: (1) whether and how readability and visual performance varied with the different combinations of ambient luminance and display luminance and (2) whether and how they influenced the subjective experience (through self-reported valence, annoyance, visual fatigue) and preference. The results indicate a limited, yet negative influence of increased ambient luminance and reduced contrast on visual performance and readability for both displays. Similarly, we found that the self-reported valence decreases and annoyance and visual fatigue increase as the contrast ratio decreases and ambient luminance increases. Overall, the impact is clearer for the matte display than for the glossy display.

Paper Details

Date Published: 17 March 2015
PDF: 12 pages
Proc. SPIE 9394, Human Vision and Electronic Imaging XX, 93941E (17 March 2015); doi: 10.1117/12.2078380
Show Author Affiliations
Katrien De Moor, Norwegian Univ. of Science and Technology (Norway)
Ghent Univ. (Belgium)
Börje Andrén, Acreo Swedish ICT AB (Sweden)
Yi Guo, Acreo Swedish ICT AB (Sweden)
KTH Royal Institute of Technology (Sweden)
Kjell Brunnström, Acreo Swedish ICT AB (Sweden)
Mid Sweden Univ. (Sweden)
Kun Wang, Acreo Swedish ICT AB (Sweden)
KTH Royal Institute of Technology (Sweden)
Anton Drott, Volvo Car Corp. (Sweden)
David S. Hermann, Volvo Car Corp. (Sweden)

Published in SPIE Proceedings Vol. 9394:
Human Vision and Electronic Imaging XX
Bernice E. Rogowitz; Thrasyvoulos N. Pappas; Huib de Ridder, Editor(s)

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