Effects of ambient illuminance on users' visual performance using various electronic displays

Wang, An Hsiang; Kuo, Hui Tzu; Jeng, Shie−Chang

doi:10.1889/jsid17.8.665

Cited by 18 publications

(18 citation statements)

References 8 publications

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“…The VDTs with backlit or some form of integrated light unit were more readable at lower levels of illuminance compared with reflective displays. As expected, the evaluations for the LCD (iPad) were higher at lower levels of illuminance but dropped above the 500 lx level, while the reverse was true for the reflective device (Kindle DX) . As with other studies, the evaluations of the reading of conventional paper increased until the 2000 lx level .…”

Section: Discussionsupporting

confidence: 77%

Measuring the effects of lighting on the readability of electronic devices

et al. 2017

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-The aim of this study was to understand to what extent people can read e-paper devices under various conditions of ambient illuminance that can occur indoors. In this study, 110 young to elderly subjects participated in an experiment to evaluate the effects of 14 different levels of ambient lighting on their reading from three different electronic devises and paper text. The participants were asked to undergo a timed read task and then to evaluate the readability of two eReader devices (a regular electronic display and one with a front light) in comparison with a backlit liquid crystal device and conventional paper text. The results indicated that backlit and front lit devices are easier to read at less than 200 lx and the reflective device is easier to read at levels above 500 lx.

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Section: Discussionsupporting

confidence: 77%

Measuring the effects of lighting on the readability of electronic devices

et al. 2017

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“…For an LCD, linear polarizers form an integral component of the system and, as light valves, the pixel drive states can change reflected light properties. In our emulations, we did not attempt to reproduce the differences in reflected light that can occur with different pixel architectures and contrast enhancement films …”

Section: Discussionmentioning

confidence: 99%

The importance of native panel contrast and local dimming density on perceived image quality of high dynamic range displays

Hoffman

Stepien

Xiong

2016

Jnl Soc Info Display

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-We evaluated the perceived image quality of High Dynamic Range (HDR) content rendered using different types of local dimming and organic light-emitting diode (OLED) displays. Using an OLED display that is capable of achieving high contrast at a pixel level, we emulated local dimming displays to evaluate their image quality. In a set of subjective experiments, observers compared HDR images and videos rendered with different local dimming densities and native panel contrast. There was a strong effect of panel contrast on perceived quality and also a strong trend toward preference for a larger number of dimming zones. We also evaluated the panel contrast and number of local dimming zones necessary to achieve image quality comparable with OLED. The findings of these experiments demonstrated that the use of a high-contrast panel remains of critical importance. Also, the preference for panel rendering mode remains robust to normal levels of indoor ambient light.

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“…The procedure of this study was similar to that of our previous studies. 15,[10][11][12] In each trial, participants were asked to distinguish the direction of the Landolt-C gap on the display to evaluate their visual acuity. The size of the Landolt-C was designed to evaluate the visual acuity of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0.…”

Section: Methodsmentioning

confidence: 99%

“…They 10 also indicated that an ambient illuminance higher than 700 lx up to 1500 lx when using the e-paper display will enhance performance. Wang et al 11 also posited that higher ambient illuminance (500 lx) for the e-ink display may result in superior visual performance, whereas substantially higher ambient illuminance (1500 lx) for the Ch-LC display may achieve better visual performance. Wang et al 12 found that participants exhibited the best preference under high ambi-ent illuminance (500 lx).…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, the usability for the new product e-paper display is still needed to be investigated. In our previous researches, 8,11 the display used was only monochrome. Because the color combination of text/background is a very important factor for the display usability and color e-paper displays are now available in the marketplace, designing suit-able products for the elderly for the development of display devices is important because of the information-oriented society encompassing the elderly.…”

Section: Introductionmentioning

confidence: 99%

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Effects of text/background color combination, ambient illuminance, and display type on discriminating performance for young and elderly users

Wang¹,

Hwang²,

Kuo³

2012

J Soc Info Display

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Abstract— This study examined the effects of text/background color combinations (black‐on‐white, red‐on‐white, green‐on‐white, and blue‐on‐white), ambient illuminance (50, 500, and 12,000 lx), and display type (color electronic‐paper displays and conventional transmissive liquid‐crystal displays) on the discriminating performance of young and elderly users. The results showed that when participants used the color e‐paper display, young participants had significantly better discriminating performance than elderly participants under the text/background color combinations of black‐on‐white, green‐on‐white, and blue‐on‐white, whereas no significant difference was present between young and elderly participants under red‐on‐white. When participants used a conventional transmissive LCD, however, there was no significant difference between young and elderly participants under all text/background color‐combination settings. Young participants had substantially better discriminating performance under 500 and 12,000 lx than under 50 lx, whereas elderly participants had the best discriminating performance under 12,000 lx, followed by that under 500 lx, and the worst performance under 50 lx. Participants who used a conventional transmissive LCD had substantially better discriminating performance under 500 and 12,000 lx than under 50 lx. Participants who used the color e‐paper display had the best discriminating performance under 12,000 lx, followed by that under 500 lx, and the worst performance under 50 lx. The results can be the guild for the designers of color e‐paper displays.

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Effects of ambient illuminance on users' visual performance using various electronic displays

Cited by 18 publications

References 8 publications

Measuring the effects of lighting on the readability of electronic devices

Measuring the effects of lighting on the readability of electronic devices

The importance of native panel contrast and local dimming density on perceived image quality of high dynamic range displays

Effects of text/background color combination, ambient illuminance, and display type on discriminating performance for young and elderly users

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