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Optical Engineering

Image quality evaluation for smart-phone displays at lighting levels of indoor and outdoor conditions
Author(s): Rui Gong; Haisong Xu; Binyu Wang; M. Ronnier Luo
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Paper Abstract

The image quality of two active matrix organic light emitting diode (AMOLED) smart-phone displays and two in-plane switching (IPS) ones was visually assessed at two levels of ambient lighting conditions corresponding to indoor and outdoor applications, respectively. Naturalness, colorfulness, brightness, contrast, sharpness, and overall image quality were evaluated via psychophysical experiment by categorical judgment method using test images selected from different application categories. The experimental results show that the AMOLED displays perform better on colorfulness because of their wide color gamut, while the high pixel resolution and high peak luminance of the IPS panels help the perception of brightness, contrast, and sharpness. Further statistical analysis of ANOVA indicates that ambient lighting levels have significant influences on the attributes of brightness and contrast.

Paper Details

Date Published: 2 August 2012
PDF: 7 pages
Opt. Eng. 51(8) 084001 doi: 10.1117/1.OE.51.8.084001
Published in: Optical Engineering Volume 51, Issue 8
Show Author Affiliations
Rui Gong, Zhejiang Univ. (China)
Haisong Xu, Zhejiang Univ. (China)
Binyu Wang, Zhejiang Univ. (China)
M. Ronnier Luo, Univ. of Leeds (United Kingdom)

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