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http://dx.doi.org/10.7236/JIIBC.2018.18.3.23

A study on colour appearance by the size of colour stimulation at foveal vision  

Hong, Ji-Young (Department of Visual Contents, Kyung Min University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.18, no.3, 2018 , pp. 23-28 More about this Journal
Abstract
Next generation displays show a trend of evolving from the display device environment (represented by existing televisions) to the mobile environment. The mobile display corresponding to the personal display is similar to a home theatre; however, they are advantageous because they are small and have a relatively lower weight. Therefore, the display industry has an interest in diverse product applications of displays, reproducing more accurate colours, and offering improved image quality from display devices of various sizes. To address these interests, a psychophysical experiment was conducted in this research. The experiment compared the size of the colour stimulation corresponding to foveal vision by gradually increasing the lightness of the background. This was based on the assumption of possible differences in colours being recognized by the lightness of the background and the size of the colour stimulation. Contrary to the results of previous studies, where the colours are identified more clearly as the size of the colour stimulation increases (assuming that the lightness of the background is not considered) here the results of the experiment showed that the attributes of the identified colours were different depending on the lightness of the background and the size of the colour stimulation. Based on the experimental results, it is possible to resolve errors in colour conversion that can occur when the input image is switched from a large screen size to a mobile size display, and to reproduce the colours more accurately and improve the image quality.
Keywords
Human visual perception; Colour; Size effect; Foveal vision; Parafoveal vision; Display;
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