Abstract
Resolution for displays are increasing from 4K-UHD to 8K-Full UHD. We conducted a subjective image quality evaluation to compare the image quality between 4 and 8 K by using diverse image stimuli. As a result, we identified perceptual and cognitive characteristics that can be demonstrated in image quality above 8 K. Cognitive and synesthetic factors as well as perceptual factors, and color expression were improved in 8 K image quality. The research findings suggested that both perceptual and cognitive factors are reinforced in 8 K. This tendency was even more reinforced when the main object was placed within the image. Also, the contrast and vividness felt higher at 8 K, of which the vividness influenced the cognitive evaluation of the 8 K image quality. When compared with 4 K, the image quality above 8 K was accompanied by optical illusion, which in turn improved the understanding of the main object. These results suggest that cognitive evaluations for a comprehensive understanding of images may be strengthened at a very high resolution of 8 K or higher beyond the ‘presence’ of 4 K resolution.
Original language | English |
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Pages (from-to) | 103-111 |
Number of pages | 9 |
Journal | Journal of Information Display |
Volume | 21 |
Issue number | 2 |
DOIs | |
State | Published - 2 Apr 2020 |
Bibliographical note
Publisher Copyright:© 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of the Korean Information Display Society.
Keywords
- 8 K
- cognitive effect
- full ultra-high definition
- image quality
- optical illusion